UK area code
01535 area code — Keighley
01535 is Ofcom’s Keighley numbering area, in West Yorkshire, Yorkshire and The Humber England. 93 phone companies hold its 155 allocated number blocks. Its numbers are written like 01535 234 567. The nearest other codes are 01422 Halifax (13 km) and 01756 Skipton (14 km).
01535 at a glance
- Ofcom area name
- Keighley
- County
- West Yorkshire
- Council area
- Bradford
- Region
- Yorkshire and The Humber England
- Number format
- 01535 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0535)
- Allocated blocks
- 155 of 478 (32%) across 93 providers
- Newest block
- 26 January 2026 (1 in the last 12 months)
Sources: Ofcom numbering data (weekly) and area-code list, Ofcom Numbering Plan, ONS geography.
If a 01535 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.
01535 history and number format
Number format: Numbers on 01535 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01535 234 567.
Before 1995: 01535 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 0535.
Local dialling: Traditionally not from another 01535 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01535 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01535 was allocated on 15 July 1994, and the most recent on 26 January 2026. 1 block was allocated in the last 12 months — newly-activated ranges with no call history, which is worth knowing when an unfamiliar 01535 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01535 numbers
Every Ofcom range holder with blocks on 01535, 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 | 12 | 12 | 15 July 1994 | 18 September 2023 |
| GCI Network Solutions Limited | 12 | 12 | 2 May 2017 | 26 February 2024 |
| Vodafone Ltd (C&W) | 11 | 11 | 5 September 2013 | 16 November 2021 |
| Sky UK Limited | 9 | 9 | 2 July 2013 | 8 September 2020 |
| Virgin Media Limited | 9 | 9 | 18 March 2016 | 18 March 2016 |
| TalkTalk Communications Limited | 6 | 6 | 19 January 2012 | 10 November 2014 |
| Daisy Communications Ltd | 5 | 5 | 13 December 2011 | 13 December 2011 |
| Digital Space Group Limited | 3 | 3 | 18 June 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 |
| Six Degrees Technology Group Limited | 2 | 2 | 3 April 2020 | 3 April 2020 |
| (AQ) LIMITED | 1 | 1 | 19 October 2011 | 19 October 2011 |
| 24 Seven Cloud Communications Ltd | 1 | 1 | 17 January 2020 | 17 January 2020 |
| 8x8 Communications UK Limited | 1 | 1 | 30 March 2012 | 30 March 2012 |
| AQL Wholesale Ltd | 1 | 1 | 4 January 2008 | 4 January 2008 |
| Adepteo Limited | 1 | 1 | 21 December 2016 | 21 December 2016 |
| Alnitak GmbH | 1 | 1 | 3 March 2017 | 3 March 2017 |
| Andrews & Arnold (Numbers) Ltd | 1 | 1 | 19 March 2009 | 19 March 2009 |
| Atomstream Limited | 1 | 1 | 24 March 2010 | 24 March 2010 |
| Barritel Limited | 1 | 1 | 17 August 2006 | 17 August 2006 |
| Belgacom International Carrier Services SA | 1 | 1 | 6 February 2020 | 6 February 2020 |
| Bicom Systems EURL | 1 | 1 | 5 March 2012 | 5 March 2012 |
| Bink Networks Ltd | 1 | 1 | 3 April 2023 | 3 April 2023 |
| Buzz Networks Limited | 1 | 1 | 1 March 2010 | 1 March 2010 |
| CFL Communications Ltd | 1 | 1 | 13 July 2009 | 13 July 2009 |
| Calltracks Limited | 1 | 1 | 20 September 2013 | 20 September 2013 |
| Colt Technology Services | 1 | 1 | 28 October 2015 | 28 October 2015 |
| Content Guru Limited | 1 | 1 | 12 October 2012 | 12 October 2012 |
| DIDWW Ireland Limited | 1 | 1 | 22 January 2019 | 22 January 2019 |
| DRD Communications Limited | 1 | 1 | 5 October 2023 | 5 October 2023 |
Showing the 30 largest of 93 holders.
All number blocks on 01535first 200 of 478, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 153500 | Protected | — |
| +44 153501 | Allocated | GCI Network Solutions Limited |
| +44 153502 | Protected | — |
| +44 153503 | Protected | — |
| +44 153504 | Protected | — |
| +44 153505 | Protected | — |
| +44 153506 | Protected | — |
| +44 153507 | Protected | — |
| +44 153508 | Protected | — |
| +44 153509 | Protected | — |
| +44 153510 | Protected | — |
| +44 153511 | Protected | — |
| +44 153512 | Protected | — |
| +44 153513 | Protected | — |
| +44 153514 | Protected | — |
| +44 153515 | Protected | — |
| +44 153516 | Protected | — |
| +44 153517 | Protected | — |
| +44 153518 | Protected | — |
| +44 153519 | Protected | — |
| +44 1535200 | Protected | — |
| +44 1535201 | Protected | — |
| +44 1535202 | Protected | — |
| +44 1535203 | Protected | — |
| +44 1535204 | Protected | — |
| +44 1535205 | Protected | — |
| +44 1535206 | Protected | — |
| +44 1535207 | Protected | — |
| +44 1535208 | Protected | — |
| +44 1535209 | Protected | — |
| +44 153521 | Allocated | Virgin Media Limited |
| +44 1535220 | Protected | — |
| +44 1535221 | Protected | — |
| +44 1535222 | Protected | — |
| +44 1535223 | Protected | — |
| +44 1535224 | Protected | — |
| +44 1535225 | Protected | — |
| +44 1535226 | Protected | — |
| +44 1535227 | Protected | — |
| +44 1535228 | Allocated | Vodafone Ltd (C&W) |
| +44 1535229 | Allocated | Vodafone Ltd (C&W) |
| +44 153523 | Protected | — |
| +44 153524 | Allocated | Barritel Limited |
| +44 1535250 | Allocated | GCI Network Solutions Limited |
| +44 1535251 | Allocated | GCI Network Solutions Limited |
| +44 1535252 | Allocated | GCI Network Solutions Limited |
| +44 1535253 | Allocated | GCI Network Solutions Limited |
| +44 1535254 | Allocated | GCI Network Solutions Limited |
| +44 1535255 | Allocated | GCI Network Solutions Limited |
| +44 1535256 | Allocated | GCI Network Solutions Limited |
| +44 1535257 | Allocated | GCI Network Solutions Limited |
| +44 1535258 | Allocated | GCI Network Solutions Limited |
| +44 1535259 | Allocated | GCI Network Solutions Limited |
| +44 1535260 | Protected | — |
| +44 1535261 | Protected | — |
| +44 1535262 | Protected | — |
| +44 1535263 | Protected | — |
| +44 1535264 | Protected | — |
| +44 1535265 | Allocated | Daisy Communications Ltd |
| +44 1535266 | Allocated | Daisy Communications Ltd |
| +44 1535267 | Allocated | Daisy Communications Ltd |
| +44 1535268 | Allocated | Daisy Communications Ltd |
| +44 1535269 | Allocated | Daisy Communications Ltd |
| +44 153527 | Allocated | BT |
| +44 153528 | Allocated | Gamma Telecom Holdings Limited |
| +44 153529 | Allocated | Virgin Media Limited |
| +44 153530 | Allocated | BT |
| +44 153531 | Allocated | Redcentric Solutions Limited |
| +44 1535320 | Allocated | Linear Telecoms Limited |
| +44 1535321 | Allocated | Invoco Ltd |
| +44 1535322 | Allocated | BT |
| +44 1535323 | Allocated | Orbtalk Limited |
| +44 1535324 | Protected | — |
| +44 1535325 | Allocated | Minotaur Telecom Limited |
| +44 1535326 | Allocated | Hello Telecom (UK) Limited |
| +44 1535327 | Allocated | Internexus Networks Limited |
| +44 1535328 | Allocated | Simwood eSMS Limited |
| +44 1535329 | Allocated | BT |
| +44 1535330 | Allocated | Virgin Media Limited |
| +44 1535331 | Protected | — |
| +44 1535332 | Protected | — |
| +44 1535333 | Protected | — |
| +44 1535334 | Allocated | Virgin Media Limited |
| +44 1535335 | Allocated | Virgin Media Limited |
| +44 1535336 | Allocated | Virgin Media Limited |
| +44 1535337 | Allocated | Virgin Media Limited |
| +44 1535338 | Allocated | Virgin Media Limited |
| +44 1535339 | Protected | — |
| +44 153534 | Allocated | GCI Network Solutions Limited |
| +44 153535 | Allocated | Magrathea Telecommunications Limited |
| +44 153536 | Protected | — |
| +44 153537 | Allocated | Invade International Ltd |
| +44 1535380 | Protected | — |
| +44 1535381 | Allocated | Adepteo Limited |
| +44 1535382 | Allocated | Sky UK Limited |
| +44 1535383 | Allocated | I.T Communications Limited |
| +44 1535384 | Allocated | IP Voice Networks Ltd |
| +44 1535385 | Allocated | Entanet International Ltd |
| +44 1535386 | Allocated | 24 Seven Cloud Communications Ltd |
| +44 1535387 | Allocated | Zapappi Ltd |
| +44 1535388 | Protected | — |
| +44 1535389 | Allocated | Number Services Ltd. |
| +44 1535390 | Allocated | Six Degrees Technology Group Limited |
| +44 1535391 | Protected | — |
| +44 1535392 | Protected | — |
| +44 1535393 | Protected | — |
| +44 1535394 | Allocated | Six Degrees Technology Group Limited |
| +44 1535395 | Protected | — |
| +44 1535396 | Protected | — |
| +44 1535397 | Protected | — |
| +44 1535398 | Protected | — |
| +44 1535399 | Protected | — |
| +44 153540 | Allocated | Flextel Limited |
| +44 1535410 | Allocated | Vodafone Ltd (C&W) |
| +44 1535411 | Allocated | Vodafone Ltd (C&W) |
| +44 1535412 | Allocated | Vodafone Ltd (C&W) |
| +44 1535413 | Allocated | Vodafone Ltd (C&W) |
| +44 1535414 | Allocated | Vodafone Ltd (C&W) |
| +44 1535415 | Allocated | Vodafone Ltd (C&W) |
| +44 1535416 | Allocated | Vodafone Ltd (C&W) |
| +44 1535417 | Protected | — |
| +44 1535418 | Protected | — |
| +44 1535419 | Protected | — |
| +44 153542 | Allocated | TGL Services (UK) Ltd |
| +44 1535430 | Allocated | Digitech Solutions Global Limited |
| +44 1535431 | Allocated | Sky UK Limited |
| +44 1535432 | Allocated | 8x8 Communications UK Limited |
| +44 1535433 | Allocated | ICC Networks Ltd |
| +44 1535434 | Allocated | Bicom Systems EURL |
| +44 1535435 | Allocated | IOVOX Limited |
| +44 1535436 | Allocated | Ziron Limited |
| +44 1535437 | Protected | — |
| +44 1535438 | Allocated | Content Guru Limited |
| +44 1535439 | Allocated | Sky UK Limited |
| +44 1535440 | Protected | — |
| +44 1535441 | Allocated | Media Hawk Ltd |
| +44 1535442 | Allocated | Kalnet4U Ltd |
| +44 1535443 | Allocated | TalkTalk Communications Limited |
| +44 1535444 | Allocated | VoiceHost Limited |
| +44 1535445 | Allocated | Sky UK Limited |
| +44 1535446 | Allocated | Fuse 2 Communications Ltd |
| +44 1535447 | Allocated | Redwood Technologies Ltd |
| +44 1535448 | Allocated | TalkTalk Communications Limited |
| +44 1535449 | Allocated | XoverX Ltd |
| +44 1535450 | Allocated | DRD Communications Limited |
| +44 1535451 | Protected | — |
| +44 1535452 | Protected | — |
| +44 1535453 | Protected | — |
| +44 1535454 | Protected | — |
| +44 1535455 | Protected | — |
| +44 1535456 | Protected | — |
| +44 1535457 | Protected | — |
| +44 1535458 | Protected | — |
| +44 1535459 | Protected | — |
| +44 1535460 | Protected | — |
| +44 1535461 | Protected | — |
| +44 1535462 | Protected | — |
| +44 1535463 | Allocated | Digital Space Group Limited |
| +44 1535464 | Protected | — |
| +44 1535465 | Protected | — |
| +44 1535466 | Protected | — |
| +44 1535467 | Protected | — |
| +44 1535468 | Protected | — |
| +44 1535469 | Protected | — |
| +44 1535470 | Protected | — |
| +44 1535471 | Protected | — |
| +44 1535472 | Protected | — |
| +44 1535473 | Protected | — |
| +44 1535474 | Protected | — |
| +44 1535475 | Protected | — |
| +44 1535476 | Protected | — |
| +44 1535477 | Protected | — |
| +44 1535478 | Protected | — |
| +44 1535479 | Protected | — |
| +44 153548 | Protected | — |
| +44 1535490 | Protected | — |
| +44 1535491 | Protected | — |
| +44 1535492 | Protected | — |
| +44 1535493 | Protected | — |
| +44 1535494 | Protected | — |
| +44 1535495 | Protected | — |
| +44 1535496 | Protected | — |
| +44 1535497 | Allocated | Spitfire Network Services Limited |
| +44 1535498 | Protected | — |
| +44 1535499 | Protected | — |
| +44 1535500 | Allocated | Sky UK Limited |
| +44 1535501 | Allocated | Andrews & Arnold (Numbers) Ltd |
| +44 1535502 | Allocated | Telecoms World Limited |
| +44 1535503 | Quarantined | — |
| +44 1535504 | Allocated | CFL Communications Ltd |
| +44 1535505 | Protected | — |
| +44 1535506 | Allocated | Nexus Telecommunications Limited |
| +44 1535507 | Protected | — |
| +44 1535508 | Allocated | Nuso Cloud UK Limited |
| +44 1535509 | Allocated | Buzz Networks Limited |
| +44 1535510 | Allocated | Digitech Solutions Global Limited |
| +44 1535511 | Allocated | Atomstream Limited |
| +44 1535512 | Allocated | Suretec Systems Ltd |
| +44 1535513 | Allocated | Calltracks Limited |
| +44 1535514 | Allocated | Datazero Ltd |
Related lookups
- 01422 Halifax13 km away
- 01756 Skipton14 km away
- 01274 Bradford16 km away
- 01943 Guiseley17 km away
- BT12 allocated blocks on 01535
- GCI Network Solutions Limited12 allocated blocks on 01535
- Vodafone Ltd (C&W)11 allocated blocks on 01535
- All UK towns A–ZDialling codes by town
- More West 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 01535
Where is area code 01535?
01535 is Ofcom's Keighley numbering area, in West Yorkshire, Yorkshire and The Humber England. Its exchange town is in Bradford. From abroad, drop the 0 and dial +44 1535.
Do I need to dial 01535 for a local call?
Traditionally not from another 01535 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01535 first always works, and mobiles always need it.
How are 01535 numbers written?
Numbers on 01535 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01535 234 567. From abroad the leading zero is dropped: +44 1535 then the local number.
What was the 01535 area code before?
01535 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 0535. Old signage or stationery showing 0535 refers to the same Keighley numbers.
Which phone companies hold 01535 numbers?
Ofcom lists 93 providers with allocated blocks on 01535. The largest are BT with 12 of the 155 allocated blocks, GCI Network Solutions Limited with 12 of the 155 allocated blocks and Vodafone with 11 of the 155 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 01535?
By distance between exchange towns, the nearest other codes are 01422 Halifax (13 km), 01756 Skipton (14 km), 01274 Bradford (16 km) and 01943 Guiseley (17 km).
How do I report a scam call from a 01535 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.