UK area code

01223 area code — Cambridge

01223 is Ofcom’s Cambridge numbering area, in Cambridgeshire, East of England England. 85 phone companies hold its 440 allocated number blocks. Visitors have checked 29 different 01223 numbers here. Its numbers are written like 01223 234 567. The nearest other codes are 01954 Madingley (7 km) and 01638 Newmarket (19 km).

01223 at a glance

Ofcom area name: Cambridge
County: Cambridgeshire
Council area: Cambridgeshire
Region: East of England England
Number format: 01223 234 567 (4+6)
Local calls: Full number recommended
Current code since: 1995 (previously 0223)
Allocated blocks: 440 of 514 (86%) across 85 providers
Newest block: 20 July 2026 (4 in the last 12 months)
Nearest codes: 01954 Madingley (7 km), 01638 Newmarket (19 km), 01763 Royston (20 km), 01799 Saffron Walden (21 km)

Sources: Ofcom numbering data (weekly) and area-code list, Ofcom Numbering Plan, ONS geography.

Map of the 01223 Cambridge dialling area and the nearest other UK area codes — Shaded: the council area containing the code's main exchange town (Cambridgeshire). Ofcom doesn’t publish exchange boundaries, so this shows where the numbering area’s town is, not an exact outline. Boundaries: ONS (OGL); places: ONS Index of Place Names.

What people check and report about 01223 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.

Checks: 29
Different numbers checked: 29
Different people checking: 29

That makes 01223 numbers the 36th most-checked of the 443 UK area codes people have looked up here.

If a 01223 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.
Ofcom: what to do about a scam call ↗
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.
Telephone Preference Service ↗
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.
159 (Stop Scams UK) ↗Report Fraud ↗

01223 history and number format

Number format: Numbers on 01223 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01223 234 567.

Before 1995: 01223 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 0223.

Local dialling: Traditionally not from another 01223 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01223 first always works, and mobiles always need it.

Allocation record: the oldest number block still visible on 01223 was allocated on 15 July 1994, and the most recent on 20 July 2026. 4 blocks were allocated in the last 12 months — newly-activated ranges with no call history, which is worth knowing when an unfamiliar 01223 number rings (see the weekly numbering changelog for every new allocation.)

Phone companies holding 01223 numbers

Every Ofcom range holder with blocks on 01223, 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	180	180	15 July 1994	19 June 2025
Gamma Telecom Holdings Limited	48	48	16 February 2004	20 July 2026
Colt Technology Services	23	23	11 May 2006	18 June 2026
Vodafone Ltd (C&W)	18	18	18 June 2013	17 November 2021
Virgin Media Limited	13	13	15 July 1994	13 June 2005
Sky UK Limited	12	12	21 June 2013	20 March 2024
Magrathea Telecommunications Limited	10	10	28 January 2010	15 December 2021
TalkTalk Communications Limited	8	8	19 June 2006	17 August 2010
Voxbone SA	8	8	28 November 2007	23 September 2016
Verizon UK Limited	7	7	28 June 2001	28 June 2001
GCI Network Solutions Limited	6	6	20 April 2017	22 December 2023
Served Up Limited	6	6	3 June 2008	29 June 2010
Lumen Technologies UK Limited	5	5	28 March 2006	28 March 2006
TGL Services (UK) Ltd	5	5	2 February 2015	2 February 2015
Connect Telecom UK Limited	4	4	22 January 2010	22 January 2010
AQL Wholesale Ltd	3	3	30 March 2010	19 June 2018
Barritel Limited	3	3	8 October 2008	28 November 2022
Daisy Communications Ltd	3	3	15 December 2011	17 January 2014
Voiceflex Limited	3	3	27 July 2007	18 June 2021
DRD Communications Limited	2	2	5 October 2023	5 October 2023
Datazero Ltd	2	2	2 November 2010	29 April 2019
Digital Space Group Limited	2	2	15 March 2016	12 April 2016
IOVOX Limited	2	2	20 August 2013	12 December 2016
Inet Telecoms Ltd (Voipfone)	2	2	17 November 2008	21 July 2022
Media Hawk Ltd	2	2	10 April 2013	8 July 2020
Orange Business Holdings UK Limited	2	2	26 February 2013	11 May 2016
TTNC Limited	2	2	15 November 2013	15 November 2013
VoiceHost Limited	2	2	30 June 2010	30 June 2010
(AQ) LIMITED	1	1	19 October 2011	19 October 2011
24 Seven Cloud Communications Ltd	1	1	17 January 2020	17 January 2020

Showing the 30 largest of 85 holders.

Openreach exchanges at Cambridge

Exchanges Openreach lists at this location in its copper stop-sell programme, with the date new copper orders stop.

Trumpington EATRUStop sell 17-Feb-25 · Tranche 15

All number blocks on 01223first 200 of 514, by prefix

Prefix	Status	Range holder
+44 122300	Protected	—
+44 122301	Protected	—
+44 122302	Protected	—
+44 122303	Protected	—
+44 122304	Protected	—
+44 122305	Protected	—
+44 122306	Protected	—
+44 122307	Protected	—
+44 1223080	Allocated	Voxbone SA
+44 1223081	Allocated	Voxbone SA
+44 1223082	Allocated	Voxbone SA
+44 1223083	Allocated	Voxbone SA
+44 1223084	Allocated	Voxbone SA
+44 1223085	Allocated	Voxbone SA
+44 1223086	Protected	—
+44 1223087	Protected	—
+44 1223088	Protected	—
+44 1223089	Protected	—
+44 122309	Protected	—
+44 1223100	Protected	—
+44 1223101	Protected	—
+44 1223102	Protected	—
+44 1223103	Protected	—
+44 1223104	Protected	—
+44 1223105	Protected	—
+44 1223106	Protected	—
+44 1223107	Protected	—
+44 1223108	Protected	—
+44 1223109	Protected	—
+44 1223110	Protected	—
+44 1223111	Protected	—
+44 1223112	Protected	—
+44 1223113	Protected	—
+44 1223114	Protected	—
+44 1223115	Protected	—
+44 1223116	Protected	—
+44 1223117	Protected	—
+44 1223118	Protected	—
+44 1223119	Protected	—
+44 122312	Allocated	Virgin Media Limited
+44 122313	Protected	—
+44 122314	Protected	—
+44 122315	Protected	—
+44 122316	Allocated	Virgin Media Limited
+44 122317	Protected	—
+44 122318	Protected	—
+44 122319	Protected	—
+44 122320	Allocated	BT
+44 122321	Allocated	BT
+44 122322	Allocated	BT
+44 1223230	Allocated	TELNYX UK LIMITED
+44 1223231	Allocated	Gamma Telecom Holdings Limited
+44 1223232	Allocated	BT
+44 1223233	Allocated	BT
+44 1223234	Allocated	BT
+44 1223235	Allocated	BT
+44 1223236	Allocated	BT
+44 1223237	Allocated	BT
+44 1223238	Allocated	BT
+44 1223239	Allocated	Colt Technology Services
+44 122324	Allocated	BT
+44 122325	Allocated	Vodafone Ltd (C&W)
+44 122326	Allocated	BT
+44 122327	Allocated	BT
+44 122328	Allocated	Vodafone Ltd (C&W)
+44 1223290	Allocated	BT
+44 1223291	Allocated	BT
+44 1223292	Allocated	BT
+44 1223293	Allocated	BT
+44 1223294	Allocated	BT
+44 1223295	Allocated	BT
+44 1223296	Allocated	BT
+44 1223297	Allocated	BT
+44 1223298	Allocated	Vonage Business Limited
+44 1223299	Allocated	BT
+44 122330	Allocated	BT
+44 1223310	Allocated	BT
+44 1223311	Allocated	BT
+44 1223312	Allocated	BT
+44 1223313	Allocated	BT
+44 1223314	Allocated	BT
+44 1223315	Allocated	BT
+44 1223316	Allocated	BT
+44 1223317	Allocated	I.T Communications Limited
+44 1223318	Allocated	Andrews & Arnold (Numbers) Ltd
+44 1223319	Allocated	BT
+44 1223320	Allocated	Gamma Telecom Holdings Limited
+44 1223321	Allocated	BT
+44 1223322	Allocated	BT
+44 1223323	Allocated	BT
+44 1223324	Allocated	BT
+44 1223325	Allocated	BT
+44 1223326	Allocated	BT
+44 1223327	Allocated	BT
+44 1223328	Allocated	BT
+44 1223329	Allocated	BT
+44 122333	Allocated	Gamma Telecom Holdings Limited
+44 122334	Allocated	BT
+44 122335	Allocated	BT
+44 122336	Allocated	BT
+44 1223370	Allocated	BT
+44 1223371	Allocated	BT
+44 1223372	Allocated	BT
+44 1223373	Allocated	BT
+44 1223374	Allocated	BT
+44 1223375	Allocated	BT
+44 1223376	Allocated	BT
+44 1223377	Allocated	BT
+44 1223378	Allocated	BT
+44 1223379	Allocated	BT
+44 1223380	Allocated	Gamma Telecom Holdings Limited
+44 1223381	Allocated	Verizon UK Limited
+44 1223382	Allocated	Verizon UK Limited
+44 1223383	Allocated	Verizon UK Limited
+44 1223384	Allocated	Verizon UK Limited
+44 1223385	Allocated	Verizon UK Limited
+44 1223386	Allocated	BT
+44 1223387	Allocated	Gamma Telecom Holdings Limited
+44 1223388	Allocated	Verizon UK Limited
+44 1223389	Allocated	Verizon UK Limited
+44 1223390	Allocated	BT
+44 1223391	Allocated	BT
+44 1223392	Allocated	BT
+44 1223393	Allocated	BT
+44 1223394	Allocated	BT
+44 1223395	Allocated	BT
+44 1223396	Allocated	Colt Technology Services
+44 1223397	Allocated	BT
+44 1223398	Allocated	Liquid 11 Limited
+44 1223399	Allocated	BT
+44 1223400	Allocated	BT
+44 1223401	Allocated	BT
+44 1223402	Allocated	BT
+44 1223403	Allocated	BT
+44 1223404	Allocated	BT
+44 1223405	Allocated	BT
+44 1223406	Allocated	BT
+44 1223407	Free	—
+44 1223408	Allocated	BT
+44 1223409	Allocated	BT
+44 122341	Allocated	BT
+44 122342	Allocated	BT
+44 1223430	Allocated	Datazero Ltd
+44 1223431	Allocated	BT
+44 1223432	Allocated	BT
+44 1223433	Allocated	BT
+44 1223434	Allocated	BT
+44 1223435	Allocated	BT
+44 1223436	Allocated	BT
+44 1223437	Allocated	BT
+44 1223438	Allocated	BT
+44 1223439	Allocated	Voiceflex Limited
+44 122344	Allocated	BT
+44 1223450	Allocated	BT
+44 1223451	Allocated	BT
+44 1223452	Allocated	BT
+44 1223453	Allocated	BT
+44 1223454	Allocated	BT
+44 1223455	Allocated	BT
+44 1223456	Free	—
+44 1223457	Allocated	BT
+44 1223458	Allocated	BT
+44 1223459	Allocated	BT
+44 122346	Allocated	BT
+44 122347	Allocated	Virgin Media Limited
+44 1223480	Allocated	BT
+44 1223481	Allocated	BT
+44 1223482	Allocated	Colt Technology Services
+44 1223483	Allocated	Gamma Telecom Holdings Limited
+44 1223484	Allocated	BT
+44 1223485	Allocated	BT
+44 1223486	Free	—
+44 1223487	Protected	—
+44 1223488	Allocated	BT
+44 1223489	Allocated	Ccpro Solutions Limited
+44 1223490	Allocated	Sky UK Limited
+44 1223491	Allocated	BT
+44 1223492	Allocated	BT
+44 1223493	Allocated	BT
+44 1223494	Allocated	BT
+44 1223495	Allocated	BT
+44 1223496	Allocated	BT
+44 1223497	Allocated	BT
+44 1223498	Allocated	BT
+44 1223499	Allocated	BT
+44 122350	Allocated	Virgin Media Limited
+44 122351	Allocated	Virgin Media Limited
+44 122352	Allocated	Virgin Media Limited
+44 122353	Allocated	BT
+44 1223540	Protected	—
+44 1223541	Allocated	BT
+44 1223542	Allocated	BT
+44 1223543	Allocated	BT
+44 1223544	Allocated	BT
+44 1223545	Allocated	BT
+44 1223546	Protected	—
+44 1223547	Protected	—
+44 1223548	Allocated	BT
+44 1223549	Allocated	BT
+44 122355	Allocated	BT

FAQs about 01223

Where is area code 01223?

01223 is Ofcom's Cambridge numbering area, in Cambridgeshire, East of England England. Its exchange town is in Cambridgeshire. From abroad, drop the 0 and dial +44 1223.

Do I need to dial 01223 for a local call?

Traditionally not from another 01223 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01223 first always works, and mobiles always need it.

How are 01223 numbers written?

Numbers on 01223 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01223 234 567. From abroad the leading zero is dropped: +44 1223 then the local number.

What was the 01223 area code before?

01223 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 0223. Old signage or stationery showing 0223 refers to the same Cambridge numbers.

Which phone companies hold 01223 numbers?

Ofcom lists 85 providers with allocated blocks on 01223. The largest are BT with 180 of the 440 allocated blocks, Gamma Telecom Holdings Limited with 48 of the 440 allocated blocks and Colt Technology Services with 23 of the 440 allocated blocks. Numbers can be ported, so a number's current provider may differ from the block's holder.

Are 01223 numbers reported as scams?

Visitors have checked 29 different 01223 numbers here 29 times since May 2026.

Which area codes are next to 01223?

By distance between exchange towns, the nearest other codes are 01954 Madingley (7 km), 01638 Newmarket (19 km), 01763 Royston (20 km) and 01799 Saffron Walden (21 km).

How do I report a scam call from a 01223 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.