UK area code
01431 area code — Helmsdale
01431 is Ofcom’s Helmsdale numbering area, in Highland, Scotland. 76 phone companies hold its 83 allocated number blocks. Its numbers are written like 01431 234 567. The nearest other codes are 01408 Golspie (24 km) and 01593 Lybster (31 km).
01431 at a glance
- Ofcom area name
- Helmsdale
- Council area
- Highland
- Country
- Scotland
- Number format
- 01431 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0431)
- Allocated blocks
- 83 of 487 (17%) across 76 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 01431 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 Police Scotland on 101. In Scotland fraud goes to Police Scotland rather than Report Fraud.
01431 history and number format
Number format: Numbers on 01431 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01431 234 567.
Before 1995: 01431 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 0431.
Local dialling: Traditionally not from another 01431 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01431 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01431 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 01431 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01431 numbers
Every Ofcom range holder with blocks on 01431, 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 |
|---|---|---|---|---|
| Inet Telecoms Ltd (Voipfone) | 4 | 4 | 30 November 2009 | 30 November 2009 |
| BT | 2 | 2 | 15 July 1994 | 15 July 2005 |
| Digital Space Group Limited | 2 | 2 | 30 November 2007 | 15 March 2016 |
| Fuse 2 Communications Ltd | 2 | 2 | 4 July 2017 | 22 January 2024 |
| TalkTalk Communications Limited | 2 | 2 | 19 January 2012 | 19 January 2012 |
| (AQ) LIMITED | 1 | 1 | 11 September 2012 | 11 September 2012 |
| 8x8 Communications UK Limited | 1 | 1 | 29 March 2012 | 29 March 2012 |
| AQL Wholesale Ltd | 1 | 1 | 26 June 2006 | 26 June 2006 |
| Adepteo Limited | 1 | 1 | 17 January 2017 | 17 January 2017 |
| Andrews & Arnold (Numbers) Ltd | 1 | 1 | 5 March 2009 | 5 March 2009 |
| Atomstream Limited | 1 | 1 | 23 April 2010 | 23 April 2010 |
| Barritel Limited | 1 | 1 | 7 June 2007 | 7 June 2007 |
| Bicom Systems EURL | 1 | 1 | 2 March 2012 | 2 March 2012 |
| Bink Networks Ltd | 1 | 1 | 3 April 2023 | 3 April 2023 |
| CFL Communications Ltd | 1 | 1 | 10 July 2009 | 10 July 2009 |
| Citrus Telecommunications Ltd | 1 | 1 | 11 April 2006 | 11 April 2006 |
| Colt Technology Services | 1 | 1 | 12 September 2019 | 12 September 2019 |
| Content Guru Limited | 1 | 1 | 15 October 2012 | 15 October 2012 |
| Dial 9 Communications Limited | 1 | 1 | 10 December 2019 | 10 December 2019 |
| Digitech Solutions Global Limited | 1 | 1 | 28 April 2010 | 28 April 2010 |
| EVE CONNECT LTD | 1 | 1 | 15 June 2022 | 15 June 2022 |
| Flextel Limited | 1 | 1 | 17 November 2005 | 17 November 2005 |
| GCI Network Solutions Limited | 1 | 1 | 20 December 2023 | 20 December 2023 |
| Gamma Telecom Holdings Limited | 1 | 1 | 17 May 2005 | 17 May 2005 |
| Hello Telecom (UK) Limited | 1 | 1 | 20 July 2012 | 20 July 2012 |
| I.T Communications Limited | 1 | 1 | 19 April 2016 | 19 April 2016 |
| ICC Networks Ltd | 1 | 1 | 13 April 2012 | 13 April 2012 |
| ICUK Computing Services Limited | 1 | 1 | 23 November 2022 | 23 November 2022 |
| INTELLIGENT EXCHANGES LIMITED | 1 | 1 | 26 January 2026 | 26 January 2026 |
| IOVOX Limited | 1 | 1 | 3 July 2012 | 3 July 2012 |
Showing the 30 largest of 76 holders.
All number blocks on 01431first 200 of 487, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 143100 | Protected | — |
| +44 143101 | Protected | — |
| +44 143102 | Protected | — |
| +44 143103 | Protected | — |
| +44 143104 | Protected | — |
| +44 143105 | Protected | — |
| +44 143106 | Protected | — |
| +44 143107 | Protected | — |
| +44 143108 | Protected | — |
| +44 143109 | Protected | — |
| +44 143110 | Protected | — |
| +44 143111 | Protected | — |
| +44 143112 | Protected | — |
| +44 143113 | Protected | — |
| +44 143114 | Protected | — |
| +44 143115 | Protected | — |
| +44 143116 | Protected | — |
| +44 143117 | Protected | — |
| +44 143118 | Protected | — |
| +44 143119 | Protected | — |
| +44 143120 | Allocated | VoIP-Un Limited |
| +44 143121 | Allocated | Digital Space Group Limited |
| +44 143122 | Allocated | Net-Work Internet Ltd |
| +44 143123 | Allocated | Telecom2 Limited |
| +44 143124 | Allocated | Nodemax Limited |
| +44 143125 | Protected | — |
| +44 1431260 | Allocated | Voxbone SA |
| +44 1431261 | Protected | — |
| +44 1431262 | Protected | — |
| +44 1431263 | Protected | — |
| +44 1431264 | Protected | — |
| +44 1431265 | Protected | — |
| +44 1431266 | Protected | — |
| +44 1431267 | Protected | — |
| +44 1431268 | Protected | — |
| +44 1431269 | Protected | — |
| +44 143127 | Allocated | Solutios Limited |
| +44 1431280 | Protected | — |
| +44 1431281 | Protected | — |
| +44 1431282 | Protected | — |
| +44 1431283 | Protected | — |
| +44 1431284 | Protected | — |
| +44 1431285 | Protected | — |
| +44 1431286 | Protected | — |
| +44 1431287 | Allocated | Digital Space Group Limited |
| +44 1431288 | Protected | — |
| +44 1431289 | Protected | — |
| +44 143129 | Quarantined | — |
| +44 143130 | Allocated | Mars Communications Limited |
| +44 143131 | Allocated | Andrews & Arnold (Numbers) Ltd |
| +44 143132 | Quarantined | — |
| +44 143133 | Allocated | CFL Communications Ltd |
| +44 143134 | Protected | — |
| +44 143135 | Allocated | Nexus Telecommunications Limited |
| +44 1431360 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1431361 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1431362 | Protected | — |
| +44 1431363 | Protected | — |
| +44 1431364 | Protected | — |
| +44 1431365 | Protected | — |
| +44 1431366 | Protected | — |
| +44 1431367 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1431368 | Protected | — |
| +44 1431369 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1431370 | Allocated | Digitech Solutions Global Limited |
| +44 1431371 | Allocated | Suretec Systems Ltd |
| +44 1431372 | Allocated | M247 Ltd |
| +44 1431373 | Allocated | Windsor Telecom Limited |
| +44 1431374 | Allocated | Simwood eSMS Limited |
| +44 1431375 | Allocated | VoiceHost Limited |
| +44 1431376 | Allocated | GCI Network Solutions Limited |
| +44 1431377 | Allocated | Atomstream Limited |
| +44 1431378 | Allocated | Telephone Box Limited |
| +44 1431379 | Protected | — |
| +44 1431380 | Allocated | Phone Co-Op Numbering Limited |
| +44 1431381 | Protected | — |
| +44 1431382 | Allocated | Invosys Limited |
| +44 1431383 | Allocated | INTELLIGENT EXCHANGES LIMITED |
| +44 1431384 | Allocated | Nexbridge Communications Limited |
| +44 1431385 | Protected | — |
| +44 1431386 | Protected | — |
| +44 1431387 | Protected | — |
| +44 1431388 | Allocated | Orbtalk Limited |
| +44 1431389 | Allocated | Invoco Ltd |
| +44 1431390 | Allocated | Internexus Networks Limited |
| +44 1431391 | Allocated | 8x8 Communications UK Limited |
| +44 1431392 | Allocated | Bicom Systems EURL |
| +44 1431393 | Allocated | Ziron Limited |
| +44 1431394 | Protected | — |
| +44 1431395 | Allocated | ICC Networks Ltd |
| +44 1431396 | Allocated | Hello Telecom (UK) Limited |
| +44 1431397 | Allocated | Nuso Cloud UK Limited |
| +44 1431398 | Allocated | IOVOX Limited |
| +44 1431399 | Protected | — |
| +44 1431400 | Allocated | Minotaur Telecom Limited |
| +44 1431401 | Allocated | Fuse 2 Communications Ltd |
| +44 1431402 | Allocated | Kalnet4U Ltd |
| +44 1431403 | Allocated | Redwood Technologies Ltd |
| +44 1431404 | Allocated | Content Guru Limited |
| +44 1431405 | Allocated | YayYay Limited |
| +44 1431406 | Allocated | IP Voice Networks Ltd |
| +44 1431407 | Allocated | Sky UK Limited |
| +44 1431408 | Allocated | EVE CONNECT LTD |
| +44 1431409 | Allocated | XoverX Ltd |
| +44 1431410 | Allocated | I.T Communications Limited |
| +44 1431411 | Protected | — |
| +44 1431412 | Allocated | Colt Technology Services |
| +44 1431413 | Allocated | Number Services Ltd. |
| +44 1431414 | Allocated | Adepteo Limited |
| +44 1431415 | Allocated | Zapappi Ltd |
| +44 1431416 | Allocated | Vodafone Ltd (C&W) |
| +44 1431417 | Allocated | Mintaka Limited |
| +44 1431418 | Allocated | Fuse 2 Communications Ltd |
| +44 1431419 | Allocated | Dial 9 Communications Limited |
| +44 1431420 | Allocated | VOXYONDER NETWORK SERVICES UK LTD |
| +44 1431421 | Allocated | Bink Networks Ltd |
| +44 1431422 | Allocated | Mi Telecom Limited |
| +44 1431423 | Free | — |
| +44 1431424 | Allocated | KCOM Group Ltd |
| +44 1431425 | Free | — |
| +44 1431426 | Free | — |
| +44 1431427 | Free | — |
| +44 1431428 | Allocated | ICUK Computing Services Limited |
| +44 1431429 | Free | — |
| +44 1431430 | Protected | — |
| +44 1431431 | Protected | — |
| +44 1431432 | Protected | — |
| +44 1431433 | Protected | — |
| +44 1431434 | Protected | — |
| +44 1431435 | Protected | — |
| +44 1431436 | Protected | — |
| +44 1431437 | Protected | — |
| +44 1431438 | Protected | — |
| +44 1431439 | Protected | — |
| +44 1431440 | Protected | — |
| +44 1431441 | Protected | — |
| +44 1431442 | Protected | — |
| +44 1431443 | Protected | — |
| +44 1431444 | Protected | — |
| +44 1431445 | Protected | — |
| +44 1431446 | Protected | — |
| +44 1431447 | Protected | — |
| +44 1431448 | Protected | — |
| +44 1431449 | Protected | — |
| +44 1431450 | Protected | — |
| +44 1431451 | Protected | — |
| +44 1431452 | Protected | — |
| +44 1431453 | Protected | — |
| +44 1431454 | Protected | — |
| +44 1431455 | Protected | — |
| +44 1431456 | Protected | — |
| +44 1431457 | Protected | — |
| +44 1431458 | Protected | — |
| +44 1431459 | Protected | — |
| +44 1431460 | Protected | — |
| +44 1431461 | Protected | — |
| +44 1431462 | Protected | — |
| +44 1431463 | Protected | — |
| +44 1431464 | Protected | — |
| +44 1431465 | Protected | — |
| +44 1431466 | Protected | — |
| +44 1431467 | Protected | — |
| +44 1431468 | Protected | — |
| +44 1431469 | Protected | — |
| +44 1431470 | Protected | — |
| +44 1431471 | Protected | — |
| +44 1431472 | Protected | — |
| +44 1431473 | Protected | — |
| +44 1431474 | Protected | — |
| +44 1431475 | Protected | — |
| +44 1431476 | Protected | — |
| +44 1431477 | Protected | — |
| +44 1431478 | Protected | — |
| +44 1431479 | Protected | — |
| +44 1431480 | Protected | — |
| +44 1431481 | Protected | — |
| +44 1431482 | Protected | — |
| +44 1431483 | Protected | — |
| +44 1431484 | Protected | — |
| +44 1431485 | Protected | — |
| +44 1431486 | Protected | — |
| +44 1431487 | Protected | — |
| +44 1431488 | Protected | — |
| +44 1431489 | Protected | — |
| +44 1431490 | Protected | — |
| +44 1431491 | Protected | — |
| +44 1431492 | Protected | — |
| +44 1431493 | Protected | — |
| +44 1431494 | Protected | — |
| +44 1431495 | Protected | — |
| +44 1431496 | Protected | — |
| +44 1431497 | Protected | — |
| +44 1431498 | Protected | — |
| +44 1431499 | Protected | — |
| +44 1431500 | Protected | — |
| +44 1431501 | Protected | — |
| +44 1431502 | Protected | — |
| +44 1431503 | Protected | — |
| +44 1431504 | Protected | — |
| +44 1431505 | Protected | — |
Related lookups
- 01408 Golspie24 km away
- 01593 Lybster31 km away
- 01862 Tain41 km away
- 01549 Lairg44 km away
- Inet Telecoms Ltd (Voipfone)4 allocated blocks on 01431
- BT2 allocated blocks on 01431
- Digital Space Group Limited2 allocated blocks on 01431
- All UK towns A–ZDialling codes by town
- More Scotland 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 01431
Where is area code 01431?
01431 is Ofcom's Helmsdale numbering area, in Highland, Scotland. Its exchange town is in Highland. From abroad, drop the 0 and dial +44 1431.
Do I need to dial 01431 for a local call?
Traditionally not from another 01431 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01431 first always works, and mobiles always need it.
How are 01431 numbers written?
Numbers on 01431 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01431 234 567. From abroad the leading zero is dropped: +44 1431 then the local number.
What was the 01431 area code before?
01431 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 0431. Old signage or stationery showing 0431 refers to the same Helmsdale numbers.
Which phone companies hold 01431 numbers?
Ofcom lists 76 providers with allocated blocks on 01431. The largest are Inet Telecoms Ltd (Voipfone) with 4 of the 83 allocated blocks, BT with 2 of the 83 allocated blocks and Digital Space Group Limited with 2 of the 83 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 01431?
By distance between exchange towns, the nearest other codes are 01408 Golspie (24 km), 01593 Lybster (31 km), 01862 Tain (41 km) and 01549 Lairg (44 km).
How do I report a scam call from a 01431 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 Police Scotland on 101. Unwanted sales calls go to the ICO after registering with the Telephone Preference Service.