UK area code
01423 area code — Harrogate
01423 is Ofcom’s Harrogate numbering area, covering Harrogate and Boroughbridge, in North Yorkshire, Yorkshire and The Humber England. 105 phone companies hold its 249 allocated number blocks. Its numbers are written like 01423 234 567. The nearest other codes are 01937 Wetherby (13 km) and 01765 Ripon (16 km).
01423 at a glance
- Ofcom area name
- Harrogate
- Places on this code
- Harrogate 014232 014235 014236 014237 014238
- Boroughbridge 014233 014234 014239
- County
- North Yorkshire
- Council area
- North Yorkshire
- Region
- Yorkshire and The Humber England
- Number format
- 01423 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0423)
- Allocated blocks
- 249 of 505 (49%) across 105 providers
- Newest block
- 17 March 2026 (3 in the last 12 months)
Sources: Ofcom numbering data (weekly) and area-code list, Ofcom Numbering Plan, ONS geography.
If a 01423 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.
01423 history and number format
Number format: Numbers on 01423 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01423 234 567.
Before 1995: 01423 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 0423.
Local dialling: Traditionally not from another 01423 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01423 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01423 was allocated on 15 July 1994, and the most recent on 17 March 2026. 3 blocks were allocated in the last 12 months — newly-activated ranges with no call history, which is worth knowing when an unfamiliar 01423 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01423 numbers
Every Ofcom range holder with blocks on 01423, 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 | 31 | 31 | 15 July 1994 | 20 March 2024 |
| Gamma Telecom Holdings Limited | 21 | 21 | 9 October 2008 | 22 September 2021 |
| Vodafone Ltd (C&W) | 13 | 13 | 2 September 2013 | 23 November 2021 |
| Sky UK Limited | 11 | 11 | 2 July 2013 | 19 August 2025 |
| GCI Network Solutions Limited | 10 | 10 | 19 April 2017 | 26 February 2024 |
| Magrathea Telecommunications Limited | 7 | 7 | 19 November 2004 | 17 November 2011 |
| TalkTalk Communications Limited | 6 | 6 | 7 August 2007 | 9 June 2014 |
| IOVOX Limited | 5 | 5 | 3 July 2012 | 21 December 2015 |
| Digital Space Group Limited | 4 | 4 | 30 November 2007 | 12 April 2016 |
| Colt Technology Services | 3 | 3 | 22 April 2015 | 28 March 2025 |
| Verizon UK Limited | 3 | 3 | 9 November 2009 | 8 March 2016 |
| Virgin Media Limited | 3 | 3 | 16 May 1995 | 24 January 2006 |
| Voxbone SA | 3 | 3 | 18 September 2008 | 5 November 2021 |
| 8x8 Communications UK Limited | 2 | 2 | 29 March 2012 | 29 March 2012 |
| Adepteo Limited | 2 | 2 | 13 October 2016 | 13 October 2016 |
| Atomstream Limited | 2 | 2 | 22 March 2010 | 22 March 2010 |
| Barritel Limited | 2 | 2 | 11 November 2008 | 3 August 2011 |
| Bicom Systems EURL | 2 | 2 | 2 March 2012 | 2 March 2012 |
| Bink Networks Ltd | 2 | 2 | 27 March 2023 | 3 April 2023 |
| Calltracks Limited | 2 | 2 | 20 September 2013 | 20 September 2013 |
| Dial 9 Communications Limited | 2 | 2 | 10 December 2019 | 9 January 2020 |
| Digitech Solutions Global Limited | 2 | 2 | 24 March 2010 | 25 June 2012 |
| Fuse 2 Communications Ltd | 2 | 2 | 3 July 2017 | 22 January 2024 |
| I.T Communications Limited | 2 | 2 | 20 November 2015 | 19 April 2016 |
| ICUK Computing Services Limited | 2 | 2 | 12 August 2019 | 23 November 2022 |
| INTELLIGENT EXCHANGES LIMITED | 2 | 2 | 26 January 2026 | 26 January 2026 |
| IP Voice Networks Ltd | 2 | 2 | 20 September 2017 | 20 September 2017 |
| Inet Telecoms Ltd (Voipfone) | 2 | 2 | 24 September 2008 | 28 January 2015 |
| Internexus Networks Limited | 2 | 2 | 21 November 2011 | 21 November 2011 |
| Invosys Limited | 2 | 2 | 26 January 2012 | 20 April 2017 |
Showing the 30 largest of 105 holders.
Openreach exchanges at Harrogate
Exchanges Openreach lists at this location in its copper stop-sell programme, with the date new copper orders stop.
- Harrogate (HG) MYHGTStop sell 19-Aug-25 · Tranche 17
- Starbeck MYSRBStop sell 16-Feb-24 · Tranche 11
All number blocks on 01423first 200 of 505, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 142300 | Protected | — |
| +44 142301 | Protected | — |
| +44 142302 | Protected | — |
| +44 142303 | Protected | — |
| +44 142304 | Protected | — |
| +44 142305 | Protected | — |
| +44 142306 | Protected | — |
| +44 142307 | Protected | — |
| +44 142308 | Protected | — |
| +44 142309 | Protected | — |
| +44 1423100 | Protected | — |
| +44 1423101 | Protected | — |
| +44 1423102 | Protected | — |
| +44 1423103 | Protected | — |
| +44 1423104 | Protected | — |
| +44 1423105 | Protected | — |
| +44 1423106 | Protected | — |
| +44 1423107 | Protected | — |
| +44 1423108 | Protected | — |
| +44 1423109 | Protected | — |
| +44 142311 | Protected | — |
| +44 142312 | Protected | — |
| +44 142313 | Protected | — |
| +44 142314 | Protected | — |
| +44 142315 | Protected | — |
| +44 142316 | Protected | — |
| +44 142317 | Protected | — |
| +44 142318 | Protected | — |
| +44 142319 | Protected | — |
| +44 1423200 | Allocated | Nationwide Telephone Assistance Ltd |
| +44 1423201 | Allocated | (AQ) LIMITED |
| +44 1423202 | Allocated | TalkTalk Communications Limited |
| +44 1423203 | Allocated | TalkTalk Communications Limited |
| +44 1423204 | Protected | — |
| +44 1423205 | Allocated | Voxbone SA |
| +44 1423206 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1423207 | Allocated | Served Up Limited |
| +44 1423208 | Allocated | GCI Network Solutions Limited |
| +44 1423209 | Allocated | Buzz Networks Limited |
| +44 142321 | Allocated | GCI Network Solutions Limited |
| +44 1423220 | Protected | — |
| +44 1423221 | Protected | — |
| +44 1423222 | Allocated | Gamma Telecom Holdings Limited |
| +44 1423223 | Allocated | Gamma Telecom Holdings Limited |
| +44 1423224 | Allocated | Gamma Telecom Holdings Limited |
| +44 1423225 | Allocated | Gamma Telecom Holdings Limited |
| +44 1423226 | Allocated | Gamma Telecom Holdings Limited |
| +44 1423227 | Allocated | Gamma Telecom Holdings Limited |
| +44 1423228 | Allocated | Gamma Telecom Holdings Limited |
| +44 1423229 | Allocated | Gamma Telecom Holdings Limited |
| +44 142323 | Protected | — |
| +44 1423240 | Allocated | Linear Telecoms Limited |
| +44 1423241 | Allocated | Nexbridge Communications Limited |
| +44 1423242 | Allocated | Barritel Limited |
| +44 1423243 | Protected | — |
| +44 1423244 | Allocated | Orbtalk Limited |
| +44 1423245 | Allocated | Hello Telecom (UK) Limited |
| +44 1423246 | Allocated | Internexus Networks Limited |
| +44 1423247 | Protected | — |
| +44 1423248 | Allocated | Bicom Systems EURL |
| +44 1423249 | Allocated | 8x8 Communications UK Limited |
| +44 1423250 | Allocated | TGL Services (UK) Ltd |
| +44 1423251 | Free | — |
| +44 1423252 | Allocated | Digitech Solutions Global Limited |
| +44 1423253 | Allocated | Six Degrees Technology Group Limited |
| +44 1423254 | Protected | — |
| +44 1423255 | Protected | — |
| +44 1423256 | Allocated | Digital Mail Limited |
| +44 1423257 | Allocated | Flextel Limited |
| +44 1423258 | Allocated | Virgin Media Limited |
| +44 1423259 | Allocated | DRD Communications Limited |
| +44 1423260 | Protected | — |
| +44 1423261 | Protected | — |
| +44 1423262 | Protected | — |
| +44 1423263 | Protected | — |
| +44 1423264 | Protected | — |
| +44 1423265 | Protected | — |
| +44 1423266 | Protected | — |
| +44 1423267 | Protected | — |
| +44 1423268 | Protected | — |
| +44 1423269 | Protected | — |
| +44 1423270 | Allocated | Digital Space Group Limited |
| +44 1423271 | Allocated | Resilient Limited |
| +44 1423272 | Allocated | TelNG Limited |
| +44 1423273 | Protected | — |
| +44 1423274 | Allocated | Localphone Limited |
| +44 1423275 | Allocated | TTNC Limited |
| +44 1423276 | Allocated | Voiceflex Limited |
| +44 1423277 | Allocated | Spitfire Network Services Limited |
| +44 1423278 | Allocated | Nuso Cloud UK Limited |
| +44 1423279 | Allocated | 24 Seven Cloud Communications Ltd |
| +44 1423280 | Allocated | Vodafone Ltd (C&W) |
| +44 1423281 | Allocated | Vodafone Ltd (C&W) |
| +44 1423282 | Allocated | Vodafone Ltd (C&W) |
| +44 1423283 | Allocated | Vodafone Ltd (C&W) |
| +44 1423284 | Allocated | Vodafone Ltd (C&W) |
| +44 1423285 | Allocated | Vodafone Ltd (C&W) |
| +44 1423286 | Allocated | Vodafone Ltd (C&W) |
| +44 1423287 | Protected | — |
| +44 1423288 | Protected | — |
| +44 1423289 | Protected | — |
| +44 1423290 | Allocated | VoIP-Un Limited |
| +44 1423291 | Allocated | Digital Space Group Limited |
| +44 1423292 | Allocated | Telecom2 Limited |
| +44 1423293 | Protected | — |
| +44 1423294 | Allocated | Digitech Solutions Global Limited |
| +44 1423295 | Allocated | Suretec Systems Ltd |
| +44 1423296 | Allocated | Calltracks Limited |
| +44 1423297 | Allocated | VoiceHost Limited |
| +44 1423298 | Allocated | Windsor Telecom Limited |
| +44 1423299 | Allocated | Telappliant Limited |
| +44 142330 | Allocated | Vodafone Ltd (C&W) |
| +44 1423310 | Allocated | Localphone Limited |
| +44 1423311 | Protected | — |
| +44 1423312 | Allocated | TelNG Limited |
| +44 1423313 | Allocated | TalkTalk Communications Limited |
| +44 1423314 | Allocated | Voiceflex Limited |
| +44 1423315 | Protected | — |
| +44 1423316 | Allocated | VoIP-Un Limited |
| +44 1423317 | Allocated | Net-Work Internet Ltd |
| +44 1423318 | Allocated | Digital Space Group Limited |
| +44 1423319 | Allocated | Nationwide Telephone Assistance Ltd |
| +44 142332 | Allocated | BT |
| +44 142333 | Allocated | BT |
| +44 142334 | Allocated | BT |
| +44 142335 | Allocated | BT |
| +44 142336 | Allocated | BT |
| +44 142337 | Allocated | BT |
| +44 1423380 | Protected | — |
| +44 1423381 | Protected | — |
| +44 1423382 | Protected | — |
| +44 1423383 | Protected | — |
| +44 1423384 | Protected | — |
| +44 1423385 | Protected | — |
| +44 1423386 | Protected | — |
| +44 1423387 | Protected | — |
| +44 1423388 | Allocated | Vodafone Ltd (C&W) |
| +44 1423389 | Allocated | Vodafone Ltd (C&W) |
| +44 1423390 | Allocated | Nodemax Limited |
| +44 1423391 | Allocated | TalkTalk Communications Limited |
| +44 1423392 | Protected | — |
| +44 1423393 | Allocated | Voxbone SA |
| +44 1423394 | Allocated | Served Up Limited |
| +44 1423395 | Allocated | Solutios Limited |
| +44 1423396 | Allocated | Gamma Telecom Holdings Limited |
| +44 1423397 | Allocated | Barritel Limited |
| +44 1423398 | Allocated | Sky UK Limited |
| +44 1423399 | Quarantined | — |
| +44 1423400 | Allocated | Invade International Ltd |
| +44 1423401 | Protected | — |
| +44 1423402 | Allocated | Reality Network Services Limited |
| +44 1423403 | Protected | — |
| +44 1423404 | Allocated | GTT-EMEA LTD |
| +44 1423405 | Allocated | Digital Space Group Limited |
| +44 1423406 | Protected | — |
| +44 1423407 | Allocated | TTNC Limited |
| +44 1423408 | Allocated | TalkTalk Communications Limited |
| +44 1423409 | Allocated | Spitfire Network Services Limited |
| +44 1423410 | Allocated | Andrews & Arnold (Numbers) Ltd |
| +44 1423411 | Allocated | Gamma Telecom Holdings Limited |
| +44 1423412 | Allocated | Telecoms World Limited |
| +44 1423413 | Protected | — |
| +44 1423414 | Protected | — |
| +44 1423415 | Allocated | Atomstream Limited |
| +44 1423416 | Allocated | Suretec Systems Ltd |
| +44 1423417 | Allocated | Calltracks Limited |
| +44 1423418 | Allocated | Datazero Ltd |
| +44 1423419 | Protected | — |
| +44 1423420 | Protected | — |
| +44 1423421 | Allocated | Sky UK Limited |
| +44 1423422 | Allocated | Content Guru Limited |
| +44 1423423 | Allocated | Simwood eSMS Limited |
| +44 1423424 | Allocated | Minotaur Telecom Limited |
| +44 1423425 | Allocated | Vonage Business Limited |
| +44 1423426 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1423427 | Allocated | IOVOX Limited |
| +44 1423428 | Allocated | M247 Ltd |
| +44 1423429 | Allocated | Redwood Technologies Ltd |
| +44 1423430 | Protected | — |
| +44 1423431 | Allocated | Sky UK Limited |
| +44 1423432 | Protected | — |
| +44 1423433 | Allocated | Internexus Networks Limited |
| +44 1423434 | Allocated | Invoco Ltd |
| +44 1423435 | Allocated | Bicom Systems EURL |
| +44 1423436 | Protected | — |
| +44 1423437 | Allocated | 8x8 Communications UK Limited |
| +44 1423438 | Allocated | Ziron Limited |
| +44 1423439 | Allocated | Sky UK Limited |
| +44 1423440 | Allocated | VOXYONDER NETWORK SERVICES UK LTD |
| +44 1423441 | Allocated | Sky UK Limited |
| +44 1423442 | Allocated | IOVOX Limited |
| +44 1423443 | Allocated | Kalnet4U Ltd |
| +44 1423444 | Allocated | YayYay Limited |
| +44 1423445 | Allocated | I.T Communications Limited |
| +44 1423446 | Allocated | Adepteo Limited |
| +44 1423447 | Allocated | Gamma Telecom Holdings Limited |
| +44 1423448 | Allocated | Invosys Limited |
| +44 1423449 | Allocated | Gamma Telecom Holdings Limited |
| +44 1423450 | Allocated | Zapappi Ltd |
| +44 1423451 | Allocated | Sky UK Limited |
Related lookups
- 01937 Wetherby13 km away
- 01765 Ripon16 km away
- 01943 Guiseley17 km away
- 0113 Leeds21 km away
- BT31 allocated blocks on 01423
- Gamma Telecom Holdings Limited21 allocated blocks on 01423
- Vodafone Ltd (C&W)13 allocated blocks on 01423
- All UK towns A–ZDialling codes by town
- More North Yorkshire 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 01423
Where is area code 01423?
01423 is Ofcom's Harrogate numbering area, in North Yorkshire, Yorkshire and The Humber England. Its exchange towns are in North Yorkshire. From abroad, drop the 0 and dial +44 1423.
Which places use the 01423 code?
Ofcom splits 01423 into 2 areas by the first digit of the local number: Harrogate (014232, 014235, 014236, 014237, 014238); Boroughbridge (014233, 014234, 014239).
Do I need to dial 01423 for a local call?
Traditionally not from another 01423 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01423 first always works, and mobiles always need it.
How are 01423 numbers written?
Numbers on 01423 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01423 234 567. From abroad the leading zero is dropped: +44 1423 then the local number.
What was the 01423 area code before?
01423 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 0423. Old signage or stationery showing 0423 refers to the same Harrogate numbers.
Which phone companies hold 01423 numbers?
Ofcom lists 105 providers with allocated blocks on 01423. The largest are BT with 31 of the 249 allocated blocks, Gamma Telecom Holdings Limited with 21 of the 249 allocated blocks and Vodafone with 13 of the 249 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 01423?
By distance between exchange towns, the nearest other codes are 01937 Wetherby (13 km), 01765 Ripon (16 km), 01943 Guiseley (17 km) and 0113 Leeds (21 km).
How do I report a scam call from a 01423 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.