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UK area code

020 area code — London

The 020 dialling code covers London in Greater London. Approximate population of the area: 8,982,000. Below are the currently-allocated Ofcom number ranges and the Range Holders they are assigned to.

More on the London dialling code →

About the 020 dialling code

020 is the UK area code for London and the surrounding Greater London area, listed in Ofcom’s National Telephone Numbering Plan. When a UK landline calls you and the number begins +44 20 the originating exchange is most likely physically located in or near London. Numbers in this code are allocated to UK communications providers in 1,000- or 10,000-number blocks; the table below shows which Range Holder Ofcom assigned each block to.

This is the same data Ofcom publishes every Wednesday in the public UK Numbering Data feed. We re-ingest the snapshot weekly, so the allocations you see here are at most seven days old. Because UK numbers are portable, the current carrier of any specific number on 020 can differ from the Range Holder shown — see Range Holder vs current provider for the full explanation.

To identify a specific 020 number, paste it into the lookup form above. You will see the Range Holder, the allocation status, the area-code metadata for London, and a live AI internet check summarising any public web reports about that exact number — useful when an unfamiliar 020 caller turns out to be a legitimate local business, a national contact-centre, or a scam.

The 020 code uses standard UK landline call charging: from a UK landline or mobile, the call is billed at the rate set by the caller’s own provider, with most consumer tariffs bundling UK-to-UK landline minutes into a monthly inclusive allowance. It is a geographic number under the Ofcom numbering plan, which means the recipient pays nothing to receive the call, and the caller pays a normal landline rate regardless of where in the UK they are dialling from. International callers should drop the leading zero and dial +44 20 followed by the local number.

020 numbers can be reached as a UK consumer landline, used by a small business operating from London, allocated to a national contact-centre that wants a London-presenting CLI, or provisioned to a VoIP service whose subscriber lives anywhere in the UK. Because the same code can fan out to such different real-world callers, the dialling code on its own is rarely enough to identify who is calling. The combination of (a) the Ofcom Range Holder for the specific block, (b) the public web reputation surfaced by the AI internet check, and (c) the call’s context (time of day, whether you were expecting a call, what they ask for) is what actually answers who called me from 020?

020 by the numbers

The 020 dialling code currently has 1,200 allocated number ranges on file across 21 distinct Ofcom Range Holders. The largest holder by allocated block count is Vodafone Ltd (C&W) with 20 ranges, followed by Buzz Networks Limited (10) and Virgin Media Limited (6). Numbers in this area are predominantly recorded as Protected (93% of the visible blocks), with Allocated accounting for a further 7%. The allocated prefixes on 020 run from +44 200000 through +44 200599, which Ofcom carves into 1 distinct block root in the table below.

Of those visible blocks, 7% are in active Allocated status; the rest are a mix of Designated (earmarked for a specific use but not yet released), Reserved (held back from the general pool), Quarantined (recently freed and not yet eligible for re-issue), and Free (available for re-allocation). The mix matters when you’re trying to identify a caller: a number sitting inside an Allocated 020 block is in active service with a UK customer, whereas a number claimed to be from a Designated or Reserved block almost certainly isn’t the genuine origin and points instead at a spoofed CLI worth treating with caution.

By number family, the visible 020 blocks are mostly geographic (01 / 02) (100%) — a useful sanity check, because a geographic code should be dominated by geographic ranges, and any large non-geographic share would be a sign the block boundaries are worth a closer look.

Best practice when a 020 call comes in

  • Cross-reference the digits against the Range Holder column below — a call presenting a 020 CLI that doesn’t reconcile to one of the UK-licensed providers listed is the first amber flag.
  • Treat the prefix as one signal, not the whole story. UK numbers are portable, and any geographic code can be CLI-spoofed through an offshore VoIP gateway, so the 020 root only narrows the field of likely callers.
  • Paste the exact digits into the lookup form above for a live AI internet check — if a 020 number has been logged on consumer scam-reporting forums, that surfaces alongside the Range Holder record.
  • If a 020 caller pressures you for payment details, account credentials or remote-access permission, hang up. Find the official number on the organisation’s website or a recent statement and ring back yourself rather than trusting the incoming CLI.

020 history and number format

Number format: Numbers on 020 use Ofcom's 2+8 format: the 3-digit code (including the leading 0) followed by a 8-digit local number — written like 020 2345 6789.

Before 2000: 020 dates from the Big Number Change on 22 April 2000. London's inner/outer split codes 0171 and 0181 (themselves 071/081 until PhONEday, and plain 01 before 1990) merged into a single 020 code with 8-digit local numbers.

Allocation record: the oldest number block still visible on 020 was allocated on 22 March 1999, and the most recent on 5 June 2026. 48 blocks were allocated in the last 12 months — newly-activated ranges with no call history, which is worth knowing when an unfamiliar 020 number rings (see the weekly numbering changelog for every new allocation.)

Range holders on 020

Complete range holder register for 020

Every Ofcom-listed Range Holder with an allocation under 020, with the number of blocks held and the span of allocation dates on record. Source: Ofcom UK Numbering Data, re-ingested weekly.

Range holderBlocksAllocatedFirst allocationMost recent
BT2692269222 March 199924 November 2025
Vodafone Ltd (C&W)67067020 June 201321 September 2023
Colt Technology Services42842822 March 19995 June 2026
Gamma Telecom Holdings Limited4244247 June 200225 February 2026
Virgin Media Limited38038022 March 199918 March 2016
Verizon UK Limited20820826 May 199915 December 2025
Sky UK Limited1261265 June 201314 June 2019
TalkTalk Communications Limited98989 October 20039 January 2020
GCI Network Solutions Limited686830 March 201726 February 2024
Lumen Technologies UK Limited646426 May 199916 June 2021
Magrathea Telecommunications Limited525217 February 200310 November 2021
Six Degrees Technology Group Limited48488 April 202017 April 2020
Resilient Limited383831 May 200618 March 2015
Voxbone SA363625 October 200716 February 2026
Hyperoptic Ltd242412 May 201622 September 2025
Syntec Limited222220 December 200218 October 2019
DRD Communications Limited18188 September 20045 October 2023
IOVOX Limited18185 March 201217 November 2025
Buzz Networks Limited16162 November 199911 May 2021
Citrus Telecommunications Ltd161630 August 20021 September 2016
Alphatalk Limited141431 January 201431 January 2014
Voiceflex Limited141424 July 200711 February 2026
AQL Wholesale Ltd12121 November 20048 October 2019
DIDWW Ireland Limited12127 April 20141 August 2023
Digital Space Group Limited12127 February 200612 April 2016
Fuse 2 Communications Ltd121222 February 201622 January 2024
Spitfire Network Services Limited12123 January 20029 December 2019
WAVECREST NETWORKS LIMITED121216 December 201916 December 2019
CINOS LIMITED10103 February 202115 January 2026
Datazero Ltd10102 November 201012 April 2019
Nuso Cloud UK Limited101015 February 200810 October 2019
Orange Business Holdings UK Limited101026 February 20136 May 2021
TelXL Limited101015 January 20049 May 2024
Cloudcall Limited8821 June 201120 November 2015
GTT-EMEA LTD8814 October 202119 June 2024
Inet Telecoms Ltd (Voipfone)8811 July 200818 September 2017
Media Hawk Ltd8826 September 201128 July 2020
Served Up Limited883 June 20083 June 2008
Simwood eSMS Limited8818 July 200627 March 2019
Swiftnet Limited8820 March 20037 August 2017
Telecom2 Limited881 September 200923 April 2012
The Excell Group Limited8828 September 200616 November 2017
Twilio Ireland Limited8815 September 20206 March 2026
Vonage Limited8814 April 202314 April 2023
Ziron Limited887 August 20126 May 2021
(AQ) LIMITED6628 September 201228 April 2014
4D Interactive Ltd6616 April 199917 January 2007
Atlas Interactive Group Limited6626 January 200022 May 2008
Calltracks Limited6620 September 201318 October 2016
Core Telecom Limited6627 April 201021 October 2019
Digitech Solutions Global Limited667 May 200826 June 2012
Essensys (UK) Limited6624 October 201319 September 2014
KDDI Europe Ltd6622 March 199926 May 1999
NFON UK Ltd6613 January 201630 May 2024
New Call Telecom Limited6618 March 201418 February 2015
Nexus Telecommunications Limited6616 May 200530 March 2009
Node4 Ltd6625 May 201126 November 2019
Premier Voicemail Ltd6629 November 200115 February 2012
Pure-IP Limited6624 January 201727 March 2017
Redcentric Solutions Limited665 June 20155 June 2015
TGL Services (UK) Ltd662 February 20152 February 2015
TTNC Limited6614 November 201311 December 2015
Telappliant Limited669 April 200823 March 2016
Vectone Mobile Limited661 July 20091 September 2014
VoIP-Un Limited6624 October 20071 March 2016
24 Seven Cloud Communications Ltd4413 September 201913 September 2019
Aloha Telecommunications Ltd444 August 20117 September 2015
Andrews & Arnold (Numbers) Ltd4426 February 200918 May 2010
Annecto Telecom4411 May 201711 May 2017
Barritec Limited445 September 201119 October 2012
Barritel Limited4413 February 200621 June 2007
Belgacom International Carrier Services SA4420 June 201620 August 2021
Bicom Systems EURL4424 July 200818 June 2009
Ccpro Solutions Limited443 June 200917 March 2025
Connect Telecom UK Limited4418 April 200516 January 2009
Content Guru Limited4421 November 200728 May 2012
Convergence Group (wireless) Networks Limited447 January 201321 May 2019
Daisy Communications Ltd443 November 20103 November 2010
Digital Mail Limited4411 August 20037 June 2005
Dynamic Mobile Billing Limited4430 March 20049 April 2009
Eircom (UK) Limited4431 January 200031 January 2000
Flextel Limited4419 October 200422 March 2005
Global Reach Networks Limited4424 August 20167 October 2019
INTELLIGENT EXCHANGES LIMITED4426 January 202626 January 2026
IPV6 Limited4420 January 200923 January 2009
IV Response Limited4416 October 200230 August 2007
InTouch Communication Services Limited4423 June 200413 February 2006
Infinity Tracking Ltd442 May 201820 November 2018
Internet of Things Limited4413 August 201813 July 2021
Kalnet4U Ltd441 December 20119 April 2020
Localphone Limited4422 May 200727 August 2015
Lycatel (Ireland) Limited441 March 20061 March 2006
Mars Communications Limited4410 March 20083 February 2009
Microtalk Europe Limited4417 March 201617 March 2016
Mintaka Limited445 March 201029 July 2013
Nebula Cloud Limited4429 February 201627 April 2021
Nexbridge Communications Limited449 January 20127 July 2021
Nextec UK Limited4425 November 20136 December 2013
Nodemax Limited4417 July 20089 June 2015
Orbtalk Limited448 April 20118 December 2014
Planet Telecom Ltd448 October 201923 December 2021
Pulsant (Scotland) Limited4417 February 200923 March 2009
Reality Network Services Limited4415 March 20053 December 2007
Redwood Technologies Ltd4415 November 201815 November 2018
SYNTURA GROUP LIMITED4426 April 200426 April 2004
Square Systems Limited446 September 200611 June 2014
Stour Marine Limited441 April 20141 April 2014
TAP GATEWAY LTD442 July 20202 July 2020
TELNYX UK LIMITED4428 April 202023 July 2024
TelNG Limited441 March 200711 July 2014
TeleWare Group Limited4420 February 201320 February 2013
VTSL Ltd446 November 201511 February 2019
VoiceHost Limited4422 June 201022 June 2010
Vonage Business Limited4420 April 201014 September 2012
Windsor Telecom Limited4414 June 200614 October 2019
X-on Health Limited4419 November 200911 December 2013
XoverX Ltd4425 April 201326 April 2013
24 Seven Communications Limited2213 July 202113 July 2021
8x8 UK Limited2211 December 200911 December 2009
9EONS LIMITED2216 December 202016 December 2020
AI Comms Ltd2219 January 202619 January 2026
API Telecom Limited221 August 20121 August 2012
AVC One Limited2212 February 201412 February 2014
Adepteo Limited2217 January 201717 January 2017
Andrews & Arnold Ltd2213 October 200613 October 2006
Antheus Telecom Limited2215 August 201715 August 2017
Atomstream Limited2222 February 201022 February 2010
Babble Cloud (SUI) Limited229 March 20059 March 2005
Bink Broadband Ltd2218 May 201518 May 2015
Budget Numbers Limited2229 May 201329 May 2013
C2C Limited2223 January 201323 January 2013
CALLABLE LIMITED2219 January 202419 January 2024
CFL Communications Ltd2211 August 200811 August 2008
Callitech Limited2220 September 201720 September 2017
Callmonitor Limited2227 September 200427 September 2004
Central Technology Limited226 July 20156 July 2015
Chess Limited226 April 20186 April 2018
Cirrus Response Limited2212 February 201412 February 2014
Commi Holdings Limited2221 November 201621 November 2016
Comms Solutions Limited2218 January 202218 January 2022
Daotec Ltd2219 May 200519 May 2005
Dial 9 Communications Limited2217 May 201617 May 2016
Direct Market Solutions Ltd223 April 20243 April 2024
EG TECHNOLOGIES LIMITED2221 January 202021 January 2020
ETC Telecom Limited226 February 20086 February 2008
EVE CONNECT LTD229 November 20229 November 2022
Entanet International Ltd2220 December 200720 December 2007
Exa Networks Limited223 July 20083 July 2008
Exponential-e Limited2214 September 201514 September 2015
Firstcom Europe Limited224 December 20234 December 2023
Firstsound Ltd2211 April 201111 April 2011
Fluency Communications Ltd227 October 20137 October 2013
Gencom Technologies Ltd2217 May 201917 May 2019
Group 3 Technology Limited226 April 20116 April 2011
HAVENSTOKE COMMUNICATIONS LTD2217 March 202617 March 2026
Hello Telecom (UK) Limited2224 April 200924 April 2009
I.T Communications Limited229 March 20159 March 2015
ICC Networks Ltd2210 March 201010 March 2010
ICUK Computing Services Limited2212 August 201912 August 2019
IDT Global Limited229 October 20009 October 2000
IM Software Ltd2220 March 201220 March 2012
INFERNO COMMUNICATIONS LTD2225 August 202325 August 2023
INTERCITY TECHNOLOGY LIMITED2224 February 201724 February 2017
IP Voice Networks Ltd2222 August 201722 August 2017
Internetty Ltd221 April 20191 April 2019
Internexus Networks Limited2222 November 201122 November 2011
Invade International Ltd2212 January 201612 January 2016
Invoco Ltd2222 September 201022 September 2010
Invosys Limited2217 May 201217 May 2012
JAINTEL LIMITED2228 July 202128 July 2021
Jtec UK Limited2226 July 201126 July 2011
KCOM Group Ltd228 September 20228 September 2022
KERV EXPERIENCE LIMITED2228 July 201428 July 2014
Lanonyx Telecom Limited2222 August 201122 August 2011
Linear Telecoms Limited223 December 20103 December 2010
Liquid 11 Limited2231 August 201731 August 2017
London Central Communications Ltd2211 December 200611 December 2006
M3st Limited2212 November 202412 November 2024
Marathon Telecom Limited2229 December 201429 December 2014
Mi Telecom Limited2223 January 201423 January 2014
Minotaur Telecom Limited2231 January 201331 January 2013
Mission Labs Limited2229 August 201729 August 2017
Nationwide Telephone Assistance Ltd222 September 20052 September 2005
Nectar Cloud Ltd2222 February 201622 February 2016
Need More Time Ltd2217 July 200717 July 2007
Net-Work Internet Ltd2221 September 200721 September 2007
Neutrino Networks Limited2225 November 201325 November 2013
Number Services Ltd.2222 November 201822 November 2018
OME LOGIC LTD226 May 20256 May 2025
OVH Limited2217 July 200917 July 2009
Odigo2216 March 202016 March 2020
Onvoy Communications Ltd.228 April 20228 April 2022
Orbital Net Limited2230 March 201530 March 2015
PCI-PAL (UK) Limited227 February 20177 February 2017
PEERLESS NETWORK UK LIMITED2226 April 201926 April 2019
Pebbletree Ltd225 April 20245 April 2024
Phone Co-Op Numbering Limited2229 November 201029 November 2010
Public Internet Limited223 May 20193 May 2019
Real Telekom Ltd227 June 20057 June 2005
Red Matter Limited2230 April 201030 April 2010
RingGo Limited2214 June 200614 June 2006
SIPWHALE LIMITED224 February 20194 February 2019
SMARTVOICE LTD221 June 20201 June 2020
SONA BUSINESS PVT. LTD.2227 March 202327 March 2023
Sark Telecom B.V.2211 August 201011 August 2010
SiPalto Ltd225 November 20195 November 2019
Simple Call Limited2220 May 202220 May 2022
Sipcentric Ltd2230 June 201430 June 2014
Solutios Limited2215 August 200815 August 2008
Sound Advertising Ltd2231 October 200731 October 2007
Spacetel UK Ltd2226 May 199926 May 1999
Square 1 Communications Limited223 September 20143 September 2014
Subtopia Limited2220 April 201720 April 2017
Supported Business Limited2221 June 201621 June 2016
Suretec Systems Ltd2214 May 201014 May 2010
THE REAL PBX LIMITED224 June 20194 June 2019
TP GLOBAL OPERATIONS LIMITED2226 July 202326 July 2023
Talk Numbers Ltd2224 October 201224 October 2012
Tango Networks UK Ltd2221 March 201621 March 2016
Tata Communications (UK) Limited2210 November 202310 November 2023
TeleSurf Limited2218 November 200918 November 2009
Telecom 10 Ltd2230 May 201830 May 2018
TelecomIQ Limited2220 August 201320 August 2013
Telecoms World Limited222 July 20092 July 2009
Telefonica UK Limited2216 April 201016 April 2010
Telemix Limited2226 February 201526 February 2015
Telephone Box Limited2227 October 201027 October 2010
Telet Research (NI) Limited221 November 20211 November 2021
Tismi BV2226 January 201126 January 2011
Tuxtel Ltd223 September 20153 September 2015
Twelve Telecom Limited2225 April 201325 April 2013
USIC INTERNET SERVICES LIMITED2223 October 202323 October 2023
Vodafone Limited2224 March 200524 March 2005
Voice Simplified Limited225 February 20155 February 2015
Voiceserve Limited223 November 20043 November 2004
Voicetec Systems Ltd2222 June 200622 June 2006
WELLTEL (UK) LIMITED2229 March 202329 March 2023
Wifinity Limited2220 February 200920 February 2009
WightFibre Limited229 November 20099 November 2009
Wizaner Limited2231 December 200131 December 2001
Wordwatch Limited2214 December 201514 December 2015
Xoom Ltd2226 February 201826 February 2018
YEMOT HAMOSHIACH UK LTD2224 August 202224 August 2022
YayYay Limited227 April 20157 April 2015
Zapappi Ltd2225 August 201725 August 2017
Zestel Limited2219 February 201319 February 2013

When each provider arrived on 020

The year each Range Holder took its first block on this code. A provider appearing recently means newly-activated numbers with no call history, which is worth knowing when an unfamiliar 020 number rings.

1999
4D Interactive Ltd, BT, Buzz Networks Limited, Colt Technology Services, KDDI Europe Ltd, Lumen Technologies UK Limited, Spacetel UK Ltd, Verizon UK Limited, Virgin Media Limited
2000
Atlas Interactive Group Limited, Eircom (UK) Limited, IDT Global Limited
2001
Premier Voicemail Ltd, Wizaner Limited
2002
Citrus Telecommunications Ltd, Gamma Telecom Holdings Limited, IV Response Limited, Spitfire Network Services Limited, Syntec Limited
2003
Digital Mail Limited, Magrathea Telecommunications Limited, Swiftnet Limited, TalkTalk Communications Limited
2004
AQL Wholesale Ltd, Callmonitor Limited, DRD Communications Limited, Dynamic Mobile Billing Limited, Flextel Limited, InTouch Communication Services Limited, SYNTURA GROUP LIMITED, TelXL Limited, Voiceserve Limited
2005
Babble Cloud (SUI) Limited, Connect Telecom UK Limited, Daotec Ltd, Nationwide Telephone Assistance Ltd, Nexus Telecommunications Limited, Real Telekom Ltd, Reality Network Services Limited, Vodafone Limited
2006
Andrews & Arnold Ltd, Barritel Limited, Digital Space Group Limited, London Central Communications Ltd, Lycatel (Ireland) Limited, Resilient Limited, RingGo Limited, Simwood eSMS Limited, Square Systems Limited, The Excell Group Limited, Voicetec Systems Ltd, Windsor Telecom Limited
2007
Content Guru Limited, Entanet International Ltd, Localphone Limited, Need More Time Ltd, Net-Work Internet Ltd, Sound Advertising Ltd, TelNG Limited, VoIP-Un Limited, Voiceflex Limited, Voxbone SA
2008
Bicom Systems EURL, CFL Communications Ltd, Digitech Solutions Global Limited, ETC Telecom Limited, Exa Networks Limited, Inet Telecoms Ltd (Voipfone), Mars Communications Limited, Nodemax Limited, Nuso Cloud UK Limited, Served Up Limited, Solutios Limited, Telappliant Limited
2009
8x8 UK Limited, Andrews & Arnold (Numbers) Ltd, Ccpro Solutions Limited, Hello Telecom (UK) Limited, IPV6 Limited, OVH Limited, Pulsant (Scotland) Limited, TeleSurf Limited, Telecom2 Limited, Telecoms World Limited, Vectone Mobile Limited, Wifinity Limited, WightFibre Limited, X-on Health Limited
2010
Atomstream Limited, Core Telecom Limited, Daisy Communications Ltd, Datazero Ltd, ICC Networks Ltd, Invoco Ltd, Linear Telecoms Limited, Mintaka Limited, Phone Co-Op Numbering Limited, Red Matter Limited, Sark Telecom B.V., Suretec Systems Ltd, Telefonica UK Limited, Telephone Box Limited, VoiceHost Limited, Vonage Business Limited
2011
Aloha Telecommunications Ltd, Barritec Limited, Cloudcall Limited, Firstsound Ltd, Group 3 Technology Limited, Internexus Networks Limited, Jtec UK Limited, Kalnet4U Ltd, Lanonyx Telecom Limited, Media Hawk Ltd, Node4 Ltd, Orbtalk Limited, Tismi BV
2012
(AQ) LIMITED, API Telecom Limited, IM Software Ltd, IOVOX Limited, Invosys Limited, Nexbridge Communications Limited, Talk Numbers Ltd, Ziron Limited
2013
Budget Numbers Limited, C2C Limited, Calltracks Limited, Convergence Group (wireless) Networks Limited, Essensys (UK) Limited, Fluency Communications Ltd, Minotaur Telecom Limited, Neutrino Networks Limited, Nextec UK Limited, Orange Business Holdings UK Limited, Sky UK Limited, TTNC Limited, TeleWare Group Limited, TelecomIQ Limited, Twelve Telecom Limited, Vodafone Ltd (C&W), XoverX Ltd, Zestel Limited
2014
AVC One Limited, Alphatalk Limited, Cirrus Response Limited, DIDWW Ireland Limited, KERV EXPERIENCE LIMITED, Marathon Telecom Limited, Mi Telecom Limited, New Call Telecom Limited, Sipcentric Ltd, Square 1 Communications Limited, Stour Marine Limited
2015
Bink Broadband Ltd, Central Technology Limited, Exponential-e Limited, I.T Communications Limited, Orbital Net Limited, Redcentric Solutions Limited, TGL Services (UK) Ltd, Telemix Limited, Tuxtel Ltd, VTSL Ltd, Voice Simplified Limited, Wordwatch Limited, YayYay Limited
2016
Belgacom International Carrier Services SA, Commi Holdings Limited, Dial 9 Communications Limited, Fuse 2 Communications Ltd, Global Reach Networks Limited, Hyperoptic Ltd, Invade International Ltd, Microtalk Europe Limited, NFON UK Ltd, Nebula Cloud Limited, Nectar Cloud Ltd, Supported Business Limited, Tango Networks UK Ltd
2017
Adepteo Limited, Annecto Telecom, Antheus Telecom Limited, Callitech Limited, GCI Network Solutions Limited, INTERCITY TECHNOLOGY LIMITED, IP Voice Networks Ltd, Liquid 11 Limited, Mission Labs Limited, PCI-PAL (UK) Limited, Pure-IP Limited, Subtopia Limited, Zapappi Ltd
2018
Chess Limited, Infinity Tracking Ltd, Internet of Things Limited, Number Services Ltd., Redwood Technologies Ltd, Telecom 10 Ltd, Xoom Ltd
2019
24 Seven Cloud Communications Ltd, Gencom Technologies Ltd, ICUK Computing Services Limited, Internetty Ltd, PEERLESS NETWORK UK LIMITED, Planet Telecom Ltd, Public Internet Limited, SIPWHALE LIMITED, SiPalto Ltd, THE REAL PBX LIMITED, WAVECREST NETWORKS LIMITED
2020
9EONS LIMITED, EG TECHNOLOGIES LIMITED, Odigo, SMARTVOICE LTD, Six Degrees Technology Group Limited, TAP GATEWAY LTD, TELNYX UK LIMITED, Twilio Ireland Limited
2021
24 Seven Communications Limited, CINOS LIMITED, GTT-EMEA LTD, JAINTEL LIMITED, Telet Research (NI) Limited
2022
Comms Solutions Limited, EVE CONNECT LTD, KCOM Group Ltd, Onvoy Communications Ltd., Simple Call Limited, YEMOT HAMOSHIACH UK LTD
2023
Firstcom Europe Limited, INFERNO COMMUNICATIONS LTD, SONA BUSINESS PVT. LTD., TP GLOBAL OPERATIONS LIMITED, Tata Communications (UK) Limited, USIC INTERNET SERVICES LIMITED, Vonage Limited, WELLTEL (UK) LIMITED
2024
CALLABLE LIMITED, Direct Market Solutions Ltd, M3st Limited, Pebbletree Ltd
2025
OME LOGIC LTD
2026
AI Comms Ltd, HAVENSTOKE COMMUNICATIONS LTD, INTELLIGENT EXCHANGES LIMITED

Providers in the recent 020 change feed

AI Comms Ltd (allocated), BT (allocated), CINOS LIMITED (allocated), Colt Technology Services (allocated), Gamma Telecom Holdings Limited (allocated), HAVENSTOKE COMMUNICATIONS LTD (allocated), Hyperoptic Ltd (allocated), INTELLIGENT EXCHANGES LIMITED (allocated), IOVOX Limited (allocated), Twilio Ireland Limited (allocated), Verizon UK Limited (allocated), Voiceflex Limited (allocated) and Voxbone SA (allocated).

Other Greater London dialling codes

All allocated ranges on 020

Ofcom lists 10,402 ranges under 020; showing the first 1,200 below, ordered by prefix.

PrefixStatusRange holder
+44 200000AllocatedVodafone Ltd (C&W)
+44 200000AllocatedVodafone Ltd (C&W)
+44 200001AllocatedCitrus Telecommunications Ltd
+44 200001AllocatedCitrus Telecommunications Ltd
+44 200002AllocatedBarritel Limited
+44 200002AllocatedBarritel Limited
+44 200003AllocatedSix Degrees Technology Group Limited
+44 200003AllocatedSix Degrees Technology Group Limited
+44 200004AllocatedAtlas Interactive Group Limited
+44 200004AllocatedAtlas Interactive Group Limited
+44 200005AllocatedIPV6 Limited
+44 200005AllocatedIPV6 Limited
+44 200006AllocatedDRD Communications Limited
+44 200006AllocatedDRD Communications Limited
+44 200007AllocatedVirgin Media Limited
+44 200007AllocatedVirgin Media Limited
+44 200008AllocatedVirgin Media Limited
+44 200008AllocatedVirgin Media Limited
+44 200009AllocatedColt Technology Services
+44 200009AllocatedColt Technology Services
+44 200010AllocatedInternet of Things Limited
+44 200010AllocatedInternet of Things Limited
+44 200011AllocatedTalkTalk Communications Limited
+44 200011AllocatedTalkTalk Communications Limited
+44 200012Protected—
+44 200012Protected—
+44 200013Protected—
+44 200013Protected—
+44 200014Protected—
+44 200014Protected—
+44 200015Protected—
+44 200015Protected—
+44 200016AllocatedVirgin Media Limited
+44 200016AllocatedVirgin Media Limited
+44 200017AllocatedVodafone Ltd (C&W)
+44 200017AllocatedVodafone Ltd (C&W)
+44 200018AllocatedVodafone Ltd (C&W)
+44 200018AllocatedVodafone Ltd (C&W)
+44 200019AllocatedVodafone Ltd (C&W)
+44 200019AllocatedVodafone Ltd (C&W)
+44 200020AllocatedAndrews & Arnold (Numbers) Ltd
+44 200020AllocatedAndrews & Arnold (Numbers) Ltd
+44 200021Protected—
+44 200021Protected—
+44 200022Protected—
+44 200022Protected—
+44 200023Protected—
+44 200023Protected—
+44 200024AllocatedVodafone Ltd (C&W)
+44 200024AllocatedVodafone Ltd (C&W)
+44 200025AllocatedVodafone Ltd (C&W)
+44 200025AllocatedVodafone Ltd (C&W)
+44 200026AllocatedVodafone Ltd (C&W)
+44 200026AllocatedVodafone Ltd (C&W)
+44 200027AllocatedVodafone Ltd (C&W)
+44 200027AllocatedVodafone Ltd (C&W)
+44 200028AllocatedVodafone Ltd (C&W)
+44 200028AllocatedVodafone Ltd (C&W)
+44 200029AllocatedVodafone Ltd (C&W)
+44 200029AllocatedVodafone Ltd (C&W)
+44 200030Protected—
+44 200030Protected—
+44 200031Protected—
+44 200031Protected—
+44 200032Protected—
+44 200032Protected—
+44 200033Protected—
+44 200033Protected—
+44 200034Protected—
+44 200034Protected—
+44 200035Protected—
+44 200035Protected—
+44 200036Protected—
+44 200036Protected—
+44 200037Protected—
+44 200037Protected—
+44 200038Protected—
+44 200038Protected—
+44 200039Protected—
+44 200039Protected—
+44 200040Protected—
+44 200040Protected—
+44 200041Protected—
+44 200041Protected—
+44 200042Protected—
+44 200042Protected—
+44 200043Protected—
+44 200043Protected—
+44 200044Protected—
+44 200044Protected—
+44 200045Protected—
+44 200045Protected—
+44 200046Protected—
+44 200046Protected—
+44 200047Protected—
+44 200047Protected—
+44 200048Protected—
+44 200048Protected—
+44 200049Protected—
+44 200049Protected—
+44 200050Protected—
+44 200050Protected—
+44 200051Protected—
+44 200051Protected—
+44 200052Protected—
+44 200052Protected—
+44 200053Protected—
+44 200053Protected—
+44 200054Protected—
+44 200054Protected—
+44 200055Protected—
+44 200055Protected—
+44 200056Protected—
+44 200056Protected—
+44 200057Protected—
+44 200057Protected—
+44 200058Protected—
+44 200058Protected—
+44 200059Protected—
+44 200059Protected—
+44 200060Protected—
+44 200060Protected—
+44 200061Protected—
+44 200061Protected—
+44 200062Protected—
+44 200062Protected—
+44 200063Protected—
+44 200063Protected—
+44 200064Protected—
+44 200064Protected—
+44 200065Protected—
+44 200065Protected—
+44 200066Protected—
+44 200066Protected—
+44 200067Protected—
+44 200067Protected—
+44 200068Protected—
+44 200068Protected—
+44 200069Protected—
+44 200069Protected—
+44 200070Protected—
+44 200070Protected—
+44 200071Protected—
+44 200071Protected—
+44 200072Protected—
+44 200072Protected—
+44 200073Protected—
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Related lookups

FAQs about 020

Where is area code 020?

Area code 020 is London, in Greater London, GBR. It is a geographic UK dialling code from Ofcom's National Telephone Numbering Plan, so a landline beginning 020 was originally allocated to an exchange serving the London charging area. Dial it as 020 XXX XXXX inside the UK, or +44 20 from abroad.

What does the 020 area code cover?

020 is the UK dialling code for London and the wider Greater London area. The area has a population of approximately 8,982,000. When you receive a call starting with 020 from a UK landline, the originating exchange is likely in or near London, although Ofcom number portability means a customer can keep a 020 number after moving elsewhere in the UK.

Is a 020 number safe?

Most calls from 020 are legitimate landlines belonging to local residents, businesses or contact centres operating from the London charging area. Scammers can, however, spoof any UK area code from a VoIP gateway anywhere in the world, so a 020 prefix alone does not prove the caller is genuinely in London. Use the lookup above to see the Range Holder for the specific number, then read the AI internet check for behavioural reports — the risk score plus public forum reports are stronger evidence than the prefix alone.

How many providers operate 020 number ranges?

Across the 1200 ranges currently visible for 020, 21 different Ofcom Range Holders are listed. The top allocations on this code are typically held by Openreach (BT), Virgin Media O2, and Sky Telecommunications Services, with additional blocks held by Gamma Telecom, Vonage, and a long tail of regional carriers. The full table further down this page shows every block in turn.

How are 020 numbers written?

Numbers on 020 use Ofcom's 2+8 format: the 3-digit code (including the leading 0) followed by a 8-digit local number — written like 020 2345 6789. From abroad the leading zero is dropped: +44 20 then the local number.

What was the 020 area code before?

020 dates from the Big Number Change on 22 April 2000. London's inner/outer split codes 0171 and 0181 (themselves 071/081 until PhONEday, and plain 01 before 1990) merged into a single 020 code with 8-digit local numbers. Any old signage or stationery showing 0171 / 0181 refers to the same London numbers.

How do I dial a 020 number from abroad?

Dial your country’s international access prefix (00 from most of Europe, 011 from North America), then 44, then the 020 number with the leading zero dropped. For example a London 020 number would be reached as +44 20-XXX-XXXX. The leading zero used inside the UK is a national-significant prefix and is replaced by the +44 country code when calling internationally.

What's the difference between 020 and a mobile number?

020 is a geographic dialling code anchored on London; numbers in this range are landlines (or VoIP services that have been allocated a geographic number). UK mobile numbers all start with 07 and are not tied to any geographic area. Calls from a 020 landline are charged at the recipient’s standard landline rate; mobile-originated calls have separate inclusive-minute rules in most consumer tariffs.