UK area code
01623 area code — Mansfield
01623 is Ofcom’s Mansfield numbering area, in Nottinghamshire, East Midlands England. 103 phone companies hold its 214 allocated number blocks. Its numbers are written like 01623 234 567. The nearest other codes are 01773 Ripley (12 km) and 01246 Chesterfield (18 km).
01623 at a glance
- Ofcom area name
- Mansfield
- County
- Nottinghamshire
- Council area
- Nottinghamshire
- Region
- East Midlands England
- Number format
- 01623 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0623)
- Allocated blocks
- 214 of 379 (56%) across 103 providers
- Newest block
- 27 July 2026 (4 in the last 12 months)
Sources: Ofcom numbering data (weekly) and area-code list, Ofcom Numbering Plan, ONS geography.
If a 01623 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.
01623 history and number format
Number format: Numbers on 01623 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01623 234 567.
Before 1995: 01623 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 0623.
Local dialling: Traditionally not from another 01623 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01623 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01623 was allocated on 15 July 1994, and the most recent on 27 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 01623 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01623 numbers
Every Ofcom range holder with blocks on 01623, 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 | 32 | 32 | 15 July 1994 | 20 March 2024 |
| Gamma Telecom Holdings Limited | 17 | 17 | 15 November 2012 | 27 July 2026 |
| Sky UK Limited | 14 | 14 | 20 June 2013 | 22 September 2021 |
| TalkTalk Communications Limited | 12 | 12 | 31 August 2011 | 31 July 2018 |
| GCI Network Solutions Limited | 9 | 9 | 2 May 2017 | 26 February 2024 |
| Magrathea Telecommunications Limited | 7 | 7 | 17 November 2011 | 17 November 2011 |
| Virgin Media Limited | 7 | 7 | 15 July 1994 | 9 January 2001 |
| Colt Technology Services | 5 | 5 | 5 May 2015 | 15 May 2025 |
| Vodafone Ltd (C&W) | 5 | 5 | 6 September 2013 | 10 November 2021 |
| GTT-EMEA LTD | 4 | 4 | 15 October 2021 | 15 October 2021 |
| Calltracks Limited | 3 | 3 | 23 September 2013 | 23 December 2016 |
| Digital Space Group Limited | 3 | 3 | 16 May 2008 | 12 April 2016 |
| Digitech Solutions Global Limited | 2 | 2 | 27 April 2010 | 26 June 2012 |
| Fuse 2 Communications Ltd | 2 | 2 | 3 July 2017 | 22 January 2024 |
| IOVOX Limited | 2 | 2 | 3 July 2012 | 17 November 2025 |
| Six Degrees Technology Group Limited | 2 | 2 | 15 January 2020 | 15 January 2020 |
| Voxbone SA | 2 | 2 | 23 September 2008 | 3 August 2023 |
| (AQ) LIMITED | 1 | 1 | 12 September 2012 | 12 September 2012 |
| 24 Seven Cloud Communications Ltd | 1 | 1 | 17 January 2020 | 17 January 2020 |
| 8x8 Communications UK Limited | 1 | 1 | 5 April 2012 | 5 April 2012 |
| AQL Wholesale Ltd | 1 | 1 | 20 December 2007 | 20 December 2007 |
| Adepteo Limited | 1 | 1 | 17 January 2017 | 17 January 2017 |
| Andrews & Arnold (Numbers) Ltd | 1 | 1 | 25 March 2009 | 25 March 2009 |
| Atomstream Limited | 1 | 1 | 24 March 2010 | 24 March 2010 |
| Barritel Limited | 1 | 1 | 6 June 2007 | 6 June 2007 |
| Belgacom International Carrier Services SA | 1 | 1 | 9 April 2020 | 9 April 2020 |
| Bicom Systems EURL | 1 | 1 | 1 March 2012 | 1 March 2012 |
| Bink Networks Ltd | 1 | 1 | 11 April 2023 | 11 April 2023 |
| Business Broadcast Communications Limited | 1 | 1 | 16 October 2009 | 16 October 2009 |
| Buzz Networks Limited | 1 | 1 | 24 February 2010 | 24 February 2010 |
Showing the 30 largest of 103 holders.
Openreach exchanges at Mansfield
Exchanges Openreach lists at this location in its copper stop-sell programme, with the date new copper orders stop.
- Mansfield EMMNSFIStop sell 14-Feb-26 · Tranche 19
All number blocks on 01623first 200 of 379, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 162300 | Protected | — |
| +44 162301 | Protected | — |
| +44 162302 | Protected | — |
| +44 162303 | Protected | — |
| +44 162304 | Protected | — |
| +44 162305 | Protected | — |
| +44 162306 | Protected | — |
| +44 162307 | Protected | — |
| +44 162308 | Protected | — |
| +44 162309 | Protected | — |
| +44 162310 | Protected | — |
| +44 162311 | Protected | — |
| +44 162312 | Protected | — |
| +44 162313 | Protected | — |
| +44 162314 | Protected | — |
| +44 162315 | Protected | — |
| +44 162316 | Protected | — |
| +44 162317 | Protected | — |
| +44 162318 | Protected | — |
| +44 162319 | Protected | — |
| +44 1623200 | Allocated | Dial 9 Communications Limited |
| +44 1623201 | Allocated | Sky UK Limited |
| +44 1623202 | Allocated | ICUK Computing Services Limited |
| +44 1623203 | Allocated | Colt Technology Services |
| +44 1623204 | Allocated | 24 Seven Cloud Communications Ltd |
| +44 1623205 | Allocated | DIDWW Ireland Limited |
| +44 1623206 | Allocated | BT |
| +44 1623207 | Allocated | Sky UK Limited |
| +44 1623208 | Protected | — |
| +44 1623209 | Allocated | Gamma Telecom Holdings Limited |
| +44 162321 | Allocated | TelNG Limited |
| +44 162322 | Allocated | Commi Holdings Limited |
| +44 1623230 | Allocated | TalkTalk Communications Limited |
| +44 1623231 | Protected | — |
| +44 1623232 | Allocated | TalkTalk Communications Limited |
| +44 1623233 | Protected | — |
| +44 1623234 | Protected | — |
| +44 1623235 | Protected | — |
| +44 1623236 | Protected | — |
| +44 1623237 | Allocated | TalkTalk Communications Limited |
| +44 1623238 | Allocated | TalkTalk Communications Limited |
| +44 1623239 | Allocated | TalkTalk Communications Limited |
| +44 162324 | Allocated | TTNC Limited |
| +44 1623250 | Allocated | TalkTalk Communications Limited |
| +44 1623251 | Allocated | Sky UK Limited |
| +44 1623252 | Allocated | EVE CONNECT LTD |
| +44 1623253 | Allocated | Digital Space Group Limited |
| +44 1623254 | Allocated | TalkTalk Communications Limited |
| +44 1623255 | Allocated | BT |
| +44 1623256 | Allocated | Mi Telecom Limited |
| +44 1623257 | Allocated | Sky UK Limited |
| +44 1623258 | Protected | — |
| +44 1623259 | Allocated | Gamma Telecom Holdings Limited |
| +44 1623260 | Protected | — |
| +44 1623261 | Protected | — |
| +44 1623262 | Protected | — |
| +44 1623263 | Protected | — |
| +44 1623264 | Protected | — |
| +44 1623265 | Protected | — |
| +44 1623266 | Protected | — |
| +44 1623267 | Protected | — |
| +44 1623268 | Protected | — |
| +44 1623269 | Protected | — |
| +44 1623270 | Allocated | Localphone Limited |
| +44 1623271 | Allocated | Barritel Limited |
| +44 1623272 | Allocated | AQL Wholesale Ltd |
| +44 1623273 | Protected | — |
| +44 1623274 | Allocated | Digital Space Group Limited |
| +44 1623275 | Allocated | VoIP-Un Limited |
| +44 1623276 | Allocated | TelXL Limited |
| +44 1623277 | Allocated | Voiceflex Limited |
| +44 1623278 | Allocated | (AQ) LIMITED |
| +44 1623279 | Allocated | Nationwide Telephone Assistance Ltd |
| +44 1623280 | Protected | — |
| +44 1623281 | Protected | — |
| +44 1623282 | Protected | — |
| +44 1623283 | Protected | — |
| +44 1623284 | Protected | — |
| +44 1623285 | Protected | — |
| +44 1623286 | Protected | — |
| +44 1623287 | Allocated | Spitfire Network Services Limited |
| +44 1623288 | Protected | — |
| +44 1623289 | Protected | — |
| +44 1623290 | Allocated | Resilient Limited |
| +44 1623291 | Protected | — |
| +44 1623292 | Protected | — |
| +44 1623293 | Protected | — |
| +44 1623294 | Protected | — |
| +44 1623295 | Protected | — |
| +44 1623296 | Protected | — |
| +44 1623297 | Protected | — |
| +44 1623298 | Protected | — |
| +44 1623299 | Protected | — |
| +44 1623300 | Allocated | Net-Work Internet Ltd |
| +44 1623301 | Allocated | Telecom2 Limited |
| +44 1623302 | Allocated | Digital Space Group Limited |
| +44 1623303 | Allocated | Invade International Ltd |
| +44 1623304 | Allocated | Nodemax Limited |
| +44 1623305 | Allocated | TalkTalk Communications Limited |
| +44 1623306 | Allocated | Voxbone SA |
| +44 1623307 | Protected | — |
| +44 1623308 | Allocated | Solutios Limited |
| +44 1623309 | Allocated | Served Up Limited |
| +44 1623310 | Protected | — |
| +44 1623311 | Allocated | Mars Communications Limited |
| +44 1623312 | Protected | — |
| +44 1623313 | Quarantined | — |
| +44 1623314 | Allocated | Telecoms World Limited |
| +44 1623315 | Allocated | Andrews & Arnold (Numbers) Ltd |
| +44 1623316 | Quarantined | — |
| +44 1623317 | Allocated | CFL Communications Ltd |
| +44 1623318 | Protected | — |
| +44 1623319 | Allocated | Nexus Telecommunications Limited |
| +44 1623320 | Allocated | Business Broadcast Communications Limited |
| +44 1623321 | Allocated | GCI Network Solutions Limited |
| +44 1623322 | Protected | — |
| +44 1623323 | Allocated | Nuso Cloud UK Limited |
| +44 1623324 | Protected | — |
| +44 1623325 | Allocated | Buzz Networks Limited |
| +44 1623326 | Allocated | Atomstream Limited |
| +44 1623327 | Allocated | Digitech Solutions Global Limited |
| +44 1623328 | Allocated | Verizon UK Limited |
| +44 1623329 | Allocated | Suretec Systems Ltd |
| +44 1623330 | Allocated | Calltracks Limited |
| +44 1623331 | Allocated | Core Telecom Limited |
| +44 1623332 | Allocated | Datazero Ltd |
| +44 1623333 | Allocated | Telappliant Limited |
| +44 1623334 | Allocated | Windsor Telecom Limited |
| +44 1623335 | Allocated | Citrus Telecommunications Ltd |
| +44 1623336 | Allocated | Telephone Box Limited |
| +44 1623337 | Protected | — |
| +44 1623338 | Allocated | Phone Co-Op Numbering Limited |
| +44 1623339 | Allocated | INTELLIGENT EXCHANGES LIMITED |
| +44 1623340 | Allocated | Nexbridge Communications Limited |
| +44 1623341 | Allocated | HAVENSTOKE COMMUNICATIONS LTD |
| +44 1623342 | Protected | — |
| +44 1623343 | Allocated | Orbtalk Limited |
| +44 1623344 | Protected | — |
| +44 1623345 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1623346 | Allocated | Minotaur Telecom Limited |
| +44 1623347 | Allocated | Invoco Ltd |
| +44 1623348 | Allocated | Hello Telecom (UK) Limited |
| +44 1623349 | Allocated | Internexus Networks Limited |
| +44 1623350 | Allocated | Bicom Systems EURL |
| +44 1623351 | Allocated | 8x8 Communications UK Limited |
| +44 1623352 | Allocated | ICC Networks Ltd |
| +44 1623353 | Protected | — |
| +44 1623354 | Allocated | Simwood eSMS Limited |
| +44 1623355 | Allocated | IOVOX Limited |
| +44 1623356 | Allocated | Ziron Limited |
| +44 1623357 | Protected | — |
| +44 1623358 | Allocated | Content Guru Limited |
| +44 1623359 | Allocated | Media Hawk Ltd |
| +44 1623360 | Allocated | Sky UK Limited |
| +44 1623361 | Allocated | Sky UK Limited |
| +44 1623362 | Allocated | Kalnet4U Ltd |
| +44 1623363 | Allocated | Fuse 2 Communications Ltd |
| +44 1623364 | Allocated | Sky UK Limited |
| +44 1623365 | Allocated | Sky UK Limited |
| +44 1623366 | Protected | — |
| +44 1623367 | Allocated | Sky UK Limited |
| +44 1623368 | Allocated | TalkTalk Communications Limited |
| +44 1623369 | Allocated | XoverX Ltd |
| +44 1623370 | Allocated | TalkTalk Communications Limited |
| +44 1623371 | Allocated | TalkTalk Communications Limited |
| +44 1623372 | Allocated | Vonage Business Limited |
| +44 1623373 | Allocated | GCI Network Solutions Limited |
| +44 1623374 | Allocated | Colt Technology Services |
| +44 1623375 | Allocated | YayYay Limited |
| +44 1623376 | Allocated | Convergence Group (wireless) Networks Limited |
| +44 1623377 | Allocated | Redwood Technologies Ltd |
| +44 1623378 | Allocated | Sky UK Limited |
| +44 1623379 | Allocated | Sky UK Limited |
| +44 1623380 | Protected | — |
| +44 1623381 | Allocated | Sky UK Limited |
| +44 1623382 | Allocated | I.T Communications Limited |
| +44 1623383 | Protected | — |
| +44 1623384 | Allocated | Calltracks Limited |
| +44 1623385 | Allocated | Colt Technology Services |
| +44 1623386 | Allocated | Colt Technology Services |
| +44 1623387 | Allocated | Sky UK Limited |
| +44 1623388 | Protected | — |
| +44 1623389 | Protected | — |
| +44 1623390 | Allocated | Calltracks Limited |
| +44 1623391 | Allocated | TalkTalk Communications Limited |
| +44 1623392 | Allocated | Gamma Telecom Holdings Limited |
| +44 1623393 | Allocated | Adepteo Limited |
| +44 1623394 | Allocated | Zapappi Ltd |
| +44 1623395 | Allocated | Invosys Limited |
| +44 1623396 | Allocated | IP Voice Networks Ltd |
| +44 1623397 | Allocated | Gamma Telecom Holdings Limited |
| +44 1623398 | Allocated | Fuse 2 Communications Ltd |
| +44 1623399 | Allocated | Number Services Ltd. |
| +44 162340 | Allocated | Virgin Media Limited |
| +44 162341 | Allocated | BT |
| +44 162342 | Allocated | BT |
| +44 162343 | Allocated | Virgin Media Limited |
| +44 162344 | Allocated | BT |
| +44 162345 | Allocated | Virgin Media Limited |
| +44 162346 | Allocated | Virgin Media Limited |
Related lookups
- 01773 Ripley12 km away
- 01246 Chesterfield18 km away
- 0115 Nottingham19 km away
- 01629 Matlock20 km away
- BT32 allocated blocks on 01623
- Gamma Telecom Holdings Limited17 allocated blocks on 01623
- Sky UK Limited14 allocated blocks on 01623
- All UK towns A–ZDialling codes by town
- More Nottinghamshire 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 01623
Where is area code 01623?
01623 is Ofcom's Mansfield numbering area, in Nottinghamshire, East Midlands England. Its exchange town is in Nottinghamshire. From abroad, drop the 0 and dial +44 1623.
Do I need to dial 01623 for a local call?
Traditionally not from another 01623 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01623 first always works, and mobiles always need it.
How are 01623 numbers written?
Numbers on 01623 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01623 234 567. From abroad the leading zero is dropped: +44 1623 then the local number.
What was the 01623 area code before?
01623 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 0623. Old signage or stationery showing 0623 refers to the same Mansfield numbers.
Which phone companies hold 01623 numbers?
Ofcom lists 103 providers with allocated blocks on 01623. The largest are BT with 32 of the 214 allocated blocks, Gamma Telecom Holdings Limited with 17 of the 214 allocated blocks and Sky UK Limited with 14 of the 214 allocated blocks. Numbers can be ported, so a number's current provider may differ from the block's holder.
Which area codes are next to 01623?
By distance between exchange towns, the nearest other codes are 01773 Ripley (12 km), 01246 Chesterfield (18 km), 0115 Nottingham (19 km) and 01629 Matlock (20 km).
How do I report a scam call from a 01623 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.