UK area code
01933 area code — Wellingborough
01933 is Ofcom’s Wellingborough numbering area, in Northamptonshire, East Midlands England. 99 phone companies hold its 170 allocated number blocks. Its numbers are written like 01933 234 567. The nearest other codes are 01604 Northampton (11 km) and 01536 Kettering (11 km).
01933 at a glance
- Ofcom area name
- Wellingborough
- County
- Northamptonshire
- Council area
- North Northamptonshire
- Region
- East Midlands England
- Number format
- 01933 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0933)
- Allocated blocks
- 170 of 433 (39%) across 99 providers
- Newest block
- 17 March 2026 (2 in the last 12 months)
Sources: Ofcom numbering data (weekly) and area-code list, Ofcom Numbering Plan, ONS geography.
What people check and report about 01933 numbers
From searches in our lookup form since 13 May 2026 and the verdicts and reports visitors left. A check means someone typed the number in, usually after a missed call.
Caller verdicts on 01933 numbers: 1
1 safe. Too few to show shares yet.
Most-reported and most-checked 01933 numbers
| Number | Verdicts | Reports | People checking |
|---|---|---|---|
| 01933 220991 | 1 safe | — | 1 |
If a 01933 number called you
No clear pattern in reports for these numbers yet. If a call worried you:
- 1
Call back on a number you trust
If a caller says they're your bank, HMRC, a courier or a council, hang up and ring the organisation on the number from its website or your statement, never the number that called you. Caller ID can be faked.
- 2
Forward it to 7726
On a mobile, copy the caller's number from your recent calls and text it to 7726 (it spells SPAM). Scam texts can be forwarded to 7726 as they are. It's free, and your network uses the reports to investigate and block numbers.
- 3
Stop sales calls
Register your landline and mobile free with the Telephone Preference Service (0345 070 0707). Legitimate UK marketers must check it; calls should drop within 28 days. It won't stop scammers.
- 4
If you lost money or shared details
Call your bank on the number on your card (or 159 to reach most UK banks safely), then report it to Report Fraud online or on 0300 123 2040. Report Fraud replaced Action Fraud on 4 December 2025 for England, Wales and Northern Ireland; in Scotland call Police Scotland on 101.
01933 history and number format
Number format: Numbers on 01933 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01933 234 567.
Before 1995: 01933 took its current form at PhONEday on 16 April 1995, when a "1" was inserted into every UK geographic code — before that the area dialled 0933.
Local dialling: Traditionally not from another 01933 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01933 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01933 was allocated on 15 July 1994, and the most recent on 17 March 2026. 2 blocks were allocated in the last 12 months — newly-activated ranges with no call history, which is worth knowing when an unfamiliar 01933 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01933 numbers
Every Ofcom range holder with blocks on 01933, by allocated blocks. The holder is the company Ofcom allocated the block to; a number can since have been ported to another provider (see range holder vs current provider).
| Range holder | Allocated | All blocks | First block | Latest block |
|---|---|---|---|---|
| BT | 20 | 20 | 15 July 1994 | 26 March 2025 |
| Sky UK Limited | 12 | 12 | 25 June 2013 | 10 September 2019 |
| GCI Network Solutions Limited | 11 | 11 | 2 May 2017 | 26 February 2024 |
| Vodafone Ltd (C&W) | 10 | 10 | 9 September 2013 | 16 November 2021 |
| TalkTalk Communications Limited | 7 | 7 | 19 January 2012 | 15 October 2018 |
| Gamma Telecom Holdings Limited | 6 | 6 | 4 March 2005 | 1 April 2022 |
| GTT-EMEA LTD | 4 | 4 | 13 October 2021 | 13 October 2021 |
| Colt Technology Services | 3 | 3 | 7 May 2015 | 30 June 2023 |
| Virgin Media Limited | 3 | 3 | 15 July 1994 | 24 July 2000 |
| Adepteo Limited | 2 | 2 | 29 November 2016 | 29 November 2016 |
| Digital Space Group Limited | 2 | 2 | 15 March 2016 | 12 April 2016 |
| Fuse 2 Communications Ltd | 2 | 2 | 3 July 2017 | 22 January 2024 |
| IOVOX Limited | 2 | 2 | 4 July 2012 | 31 January 2017 |
| (AQ) LIMITED | 1 | 1 | 27 September 2012 | 27 September 2012 |
| 24 Seven Cloud Communications Ltd | 1 | 1 | 27 January 2020 | 27 January 2020 |
| 8x8 Communications UK Limited | 1 | 1 | 19 April 2012 | 19 April 2012 |
| AQL Wholesale Ltd | 1 | 1 | 3 January 2008 | 3 January 2008 |
| Alnitak GmbH | 1 | 1 | 31 August 2016 | 31 August 2016 |
| Andrews & Arnold (Numbers) Ltd | 1 | 1 | 14 April 2009 | 14 April 2009 |
| Atomstream Limited | 1 | 1 | 13 April 2010 | 13 April 2010 |
| Barritec Limited | 1 | 1 | 19 October 2012 | 19 October 2012 |
| Barritel Limited | 1 | 1 | 8 October 2008 | 8 October 2008 |
| Belgacom International Carrier Services SA | 1 | 1 | 10 July 2020 | 10 July 2020 |
| Bicom Systems EURL | 1 | 1 | 1 March 2012 | 1 March 2012 |
| Bink Networks Ltd | 1 | 1 | 11 April 2023 | 11 April 2023 |
| Buzz Networks Limited | 1 | 1 | 1 March 2010 | 1 March 2010 |
| CFL Communications Ltd | 1 | 1 | 21 July 2009 | 21 July 2009 |
| Calltracks Limited | 1 | 1 | 20 September 2013 | 20 September 2013 |
| Content Guru Limited | 1 | 1 | 11 October 2012 | 11 October 2012 |
| Core Telecom Limited | 1 | 1 | 6 August 2010 | 6 August 2010 |
Showing the 30 largest of 99 holders.
Openreach exchanges at Wellingborough
Exchanges Openreach lists at this location in its copper stop-sell programme, with the date new copper orders stop.
- Wellingborough EMWELLIStop sell 16-Aug-24 · Tranche 13
All number blocks on 01933first 200 of 433, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 193300 | Protected | — |
| +44 193301 | Protected | — |
| +44 193302 | Protected | — |
| +44 193303 | Protected | — |
| +44 193304 | Protected | — |
| +44 193305 | Protected | — |
| +44 193306 | Protected | — |
| +44 193307 | Protected | — |
| +44 193308 | Protected | — |
| +44 193309 | Protected | — |
| +44 193310 | Protected | — |
| +44 193311 | Protected | — |
| +44 193312 | Protected | — |
| +44 193313 | Protected | — |
| +44 193314 | Protected | — |
| +44 193315 | Protected | — |
| +44 193316 | Protected | — |
| +44 193317 | Protected | — |
| +44 193318 | Protected | — |
| +44 193319 | Protected | — |
| +44 1933200 | Allocated | GCI Network Solutions Limited |
| +44 1933201 | Allocated | GCI Network Solutions Limited |
| +44 1933202 | Allocated | GCI Network Solutions Limited |
| +44 1933203 | Allocated | GCI Network Solutions Limited |
| +44 1933204 | Allocated | GCI Network Solutions Limited |
| +44 1933205 | Allocated | GCI Network Solutions Limited |
| +44 1933206 | Allocated | GCI Network Solutions Limited |
| +44 1933207 | Allocated | GCI Network Solutions Limited |
| +44 1933208 | Allocated | GCI Network Solutions Limited |
| +44 1933209 | Allocated | GCI Network Solutions Limited |
| +44 1933210 | Allocated | Linear Telecoms Limited |
| +44 1933211 | Allocated | Datazero Ltd |
| +44 1933212 | Protected | — |
| +44 1933213 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1933214 | Allocated | Internexus Networks Limited |
| +44 1933215 | Allocated | Orbtalk Limited |
| +44 1933216 | Protected | — |
| +44 1933217 | Protected | — |
| +44 1933218 | Protected | — |
| +44 1933219 | Protected | — |
| +44 193322 | Allocated | BT |
| +44 193323 | Allocated | BT |
| +44 193324 | Allocated | Redcentric Solutions Limited |
| +44 1933250 | Allocated | Vodafone Ltd (C&W) |
| +44 1933251 | Allocated | Vodafone Ltd (C&W) |
| +44 1933252 | Allocated | Vodafone Ltd (C&W) |
| +44 1933253 | Allocated | Vodafone Ltd (C&W) |
| +44 1933254 | Allocated | Vodafone Ltd (C&W) |
| +44 1933255 | Allocated | Vodafone Ltd (C&W) |
| +44 1933256 | Protected | — |
| +44 1933257 | Protected | — |
| +44 1933258 | Protected | — |
| +44 1933259 | Allocated | Vodafone Ltd (C&W) |
| +44 193326 | Allocated | Flextel Limited |
| +44 193327 | Allocated | BT |
| +44 1933280 | Protected | — |
| +44 1933281 | Protected | — |
| +44 1933282 | Protected | — |
| +44 1933283 | Allocated | Digital Space Group Limited |
| +44 1933284 | Protected | — |
| +44 1933285 | Protected | — |
| +44 1933286 | Protected | — |
| +44 1933287 | Protected | — |
| +44 1933288 | Protected | — |
| +44 1933289 | Protected | — |
| +44 193329 | Protected | — |
| +44 193330 | Allocated | BT |
| +44 193331 | Allocated | BT |
| +44 1933320 | Allocated | Digitech Solutions Global Limited |
| +44 1933321 | Allocated | Hello Telecom (UK) Limited |
| +44 1933322 | Allocated | Simwood eSMS Limited |
| +44 1933323 | Allocated | Bicom Systems EURL |
| +44 1933324 | Allocated | ICC Networks Ltd |
| +44 1933325 | Protected | — |
| +44 1933326 | Allocated | 8x8 Communications UK Limited |
| +44 1933327 | Allocated | Sky UK Limited |
| +44 1933328 | Allocated | Invoco Ltd |
| +44 1933329 | Allocated | IOVOX Limited |
| +44 193333 | Allocated | BT |
| +44 193334 | Allocated | Lumen Technologies UK Limited |
| +44 193335 | Allocated | BT |
| +44 193336 | Allocated | Vodafone Ltd (C&W) |
| +44 193337 | Allocated | Vodafone Ltd (C&W) |
| +44 193338 | Allocated | Virgin Media Limited |
| +44 193339 | Allocated | Virgin Media Limited |
| +44 193340 | Allocated | BT |
| +44 193341 | Allocated | BT |
| +44 193342 | Allocated | Gamma Telecom Holdings Limited |
| +44 193343 | Allocated | Virgin Media Limited |
| +44 193344 | Allocated | BT |
| +44 193345 | Allocated | GCI Network Solutions Limited |
| +44 193346 | Allocated | BT |
| +44 193347 | Protected | — |
| +44 1933480 | Allocated | DRD Communications Limited |
| +44 1933481 | Protected | — |
| +44 1933482 | Protected | — |
| +44 1933483 | Protected | — |
| +44 1933484 | Protected | — |
| +44 1933485 | Protected | — |
| +44 1933486 | Protected | — |
| +44 1933487 | Protected | — |
| +44 1933488 | Protected | — |
| +44 1933489 | Protected | — |
| +44 193349 | Protected | — |
| +44 193350 | Allocated | Nationwide Telephone Assistance Ltd |
| +44 193351 | Allocated | VoIP-Un Limited |
| +44 193352 | Allocated | AQL Wholesale Ltd |
| +44 193353 | Protected | — |
| +44 193354 | Allocated | Voiceflex Limited |
| +44 1933550 | Allocated | Nodemax Limited |
| +44 1933551 | Allocated | TalkTalk Communications Limited |
| +44 1933552 | Allocated | Barritel Limited |
| +44 1933553 | Allocated | Barritec Limited |
| +44 1933554 | Protected | — |
| +44 1933555 | Allocated | Telecom2 Limited |
| +44 1933556 | Protected | — |
| +44 1933557 | Allocated | TalkTalk Communications Limited |
| +44 1933558 | Allocated | Voxbone SA |
| +44 1933559 | Allocated | Served Up Limited |
| +44 1933560 | Allocated | Mars Communications Limited |
| +44 1933561 | Quarantined | — |
| +44 1933562 | Allocated | Solutios Limited |
| +44 1933563 | Allocated | Sky UK Limited |
| +44 1933564 | Allocated | Andrews & Arnold (Numbers) Ltd |
| +44 1933565 | Protected | — |
| +44 1933566 | Allocated | Invade International Ltd |
| +44 1933567 | Quarantined | — |
| +44 1933568 | Allocated | CFL Communications Ltd |
| +44 1933569 | Allocated | Nexus Telecommunications Limited |
| +44 1933570 | Protected | — |
| +44 1933571 | Protected | — |
| +44 1933572 | Protected | — |
| +44 1933573 | Protected | — |
| +44 1933574 | Protected | — |
| +44 1933575 | Protected | — |
| +44 1933576 | Protected | — |
| +44 1933577 | Allocated | Digital Space Group Limited |
| +44 1933578 | Protected | — |
| +44 1933579 | Protected | — |
| +44 1933580 | Allocated | Telecoms World Limited |
| +44 1933581 | Protected | — |
| +44 1933582 | Protected | — |
| +44 1933583 | Allocated | TeleWare Group Limited |
| +44 1933584 | Protected | — |
| +44 1933585 | Allocated | Nuso Cloud UK Limited |
| +44 1933586 | Allocated | Atomstream Limited |
| +44 1933587 | Allocated | Suretec Systems Ltd |
| +44 1933588 | Allocated | Buzz Networks Limited |
| +44 1933589 | Allocated | Calltracks Limited |
| +44 1933590 | Allocated | Windsor Telecom Limited |
| +44 1933591 | Allocated | Minotaur Telecom Limited |
| +44 1933592 | Allocated | Core Telecom Limited |
| +44 1933593 | Allocated | Telappliant Limited |
| +44 1933594 | Allocated | VoiceHost Limited |
| +44 1933595 | Protected | — |
| +44 1933596 | Protected | — |
| +44 1933597 | Protected | — |
| +44 1933598 | Protected | — |
| +44 1933599 | Protected | — |
| +44 193360 | Allocated | TGL Services (UK) Ltd |
| +44 193361 | Allocated | TelNG Limited |
| +44 193362 | Allocated | BT |
| +44 1933630 | Protected | — |
| +44 1933631 | Allocated | Sky UK Limited |
| +44 1933632 | Allocated | Sky UK Limited |
| +44 1933633 | Protected | — |
| +44 1933634 | Allocated | Adepteo Limited |
| +44 1933635 | Allocated | Alnitak GmbH |
| +44 1933636 | Allocated | I.T Communications Limited |
| +44 1933637 | Protected | — |
| +44 1933638 | Allocated | Adepteo Limited |
| +44 1933639 | Protected | — |
| +44 193364 | Allocated | Net-Work Internet Ltd |
| +44 193365 | Allocated | BT |
| +44 193366 | Allocated | BT |
| +44 193367 | Allocated | BT |
| +44 193368 | Allocated | BT |
| +44 193369 | Allocated | Magrathea Telecommunications Limited |
| +44 193370 | Allocated | Vodafone Ltd (C&W) |
| +44 1933710 | Allocated | Sky UK Limited |
| +44 1933711 | Allocated | Fuse 2 Communications Ltd |
| +44 1933712 | Allocated | Vonage Business Limited |
| +44 1933713 | Allocated | Sky UK Limited |
| +44 1933714 | Allocated | Resilient Limited |
| +44 1933715 | Allocated | Sky UK Limited |
| +44 1933716 | Allocated | YayYay Limited |
| +44 1933717 | Allocated | Kalnet4U Ltd |
| +44 1933718 | Allocated | Colt Technology Services |
| +44 1933719 | Allocated | Redwood Technologies Ltd |
| +44 1933720 | Protected | — |
| +44 1933721 | Allocated | GTT-EMEA LTD |
| +44 1933722 | Protected | — |
| +44 1933723 | Protected | — |
| +44 1933724 | Protected | — |
| +44 1933725 | Protected | — |
| +44 1933726 | Allocated | GTT-EMEA LTD |
| +44 1933727 | Allocated | GTT-EMEA LTD |
| +44 1933728 | Protected | — |
| +44 1933729 | Allocated | GTT-EMEA LTD |
| +44 193373 | Allocated | TTNC Limited |
Related lookups
- 01604 Northampton11 km away
- 01536 Kettering11 km away
- 01832 Clopton21 km away
- 01858 Market Harborough25 km away
- BT20 allocated blocks on 01933
- Sky UK Limited12 allocated blocks on 01933
- GCI Network Solutions Limited11 allocated blocks on 01933
- All UK towns A–ZDialling codes by town
- More Northamptonshire codesSame region
- All UK area codesBrowse every 01/02 dialling code
- Lookup any UK numberFree reverse phone lookup
- UK area codes explainedCornerstone guide
- 020 London numbers explainedCornerstone guide
- 0330 numbers explainedCornerstone guide
- How Ofcom allocates UK phone numbersCornerstone guide
FAQs about 01933
Where is area code 01933?
01933 is Ofcom's Wellingborough numbering area, in Northamptonshire, East Midlands England. Its exchange town is in North Northamptonshire. From abroad, drop the 0 and dial +44 1933.
Do I need to dial 01933 for a local call?
Traditionally not from another 01933 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01933 first always works, and mobiles always need it.
How are 01933 numbers written?
Numbers on 01933 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01933 234 567. From abroad the leading zero is dropped: +44 1933 then the local number.
What was the 01933 area code before?
01933 took its current form at PhONEday on 16 April 1995, when a "1" was inserted into every UK geographic code — before that the area dialled 0933. Old signage or stationery showing 0933 refers to the same Wellingborough numbers.
Which phone companies hold 01933 numbers?
Ofcom lists 99 providers with allocated blocks on 01933. The largest are BT with 20 of the 170 allocated blocks, Sky UK Limited with 12 of the 170 allocated blocks and GCI Network Solutions Limited with 11 of the 170 allocated blocks. Numbers can be ported, so a number's current provider may differ from the block's holder.
Are 01933 numbers reported as scams?
1 caller verdict have been left on 01933 numbers: 0 scam, 0 nuisance and 1 safe.
Which area codes are next to 01933?
By distance between exchange towns, the nearest other codes are 01604 Northampton (11 km), 01536 Kettering (11 km), 01832 Clopton (21 km) and 01858 Market Harborough (25 km).
How do I report a scam call from a 01933 number?
On a mobile, text the caller's number to 7726 (free). If you lost money or shared details, call your bank and report it to Report Fraud (0300 123 2040), which replaced Action Fraud in December 2025. Unwanted sales calls go to the ICO after registering with the Telephone Preference Service.