UK area code
01246 area code — Chesterfield
01246 is Ofcom’s Chesterfield numbering area, in Derbyshire, East Midlands England. 110 phone companies hold its 235 allocated number blocks. Its numbers are written like 01246 234 567. The nearest other codes are 01629 Matlock (14 km) and 01433 Hathersage (18 km).
01246 at a glance
- Ofcom area name
- Chesterfield
- County
- Derbyshire
- Council area
- Derbyshire
- Region
- East Midlands England
- Number format
- 01246 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0246)
- Allocated blocks
- 235 of 424 (55%) across 110 providers
- Newest block
- 30 June 2026 (3 in the last 12 months)
Sources: Ofcom numbering data (weekly) and area-code list, Ofcom Numbering Plan, ONS geography.
If a 01246 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.
01246 history and number format
Number format: Numbers on 01246 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01246 234 567.
Before 1995: 01246 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 0246.
Local dialling: Traditionally not from another 01246 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01246 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01246 was allocated on 15 July 1994, and the most recent on 30 June 2026. 3 blocks were allocated in the last 12 months — newly-activated ranges with no call history, which is worth knowing when an unfamiliar 01246 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01246 numbers
Every Ofcom range holder with blocks on 01246, 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 | 37 | 37 | 15 July 1994 | 30 June 2025 |
| Barritel Limited | 12 | 12 | 16 November 2011 | 2 December 2022 |
| Vodafone Ltd (C&W) | 12 | 12 | 3 October 2013 | 17 November 2021 |
| TalkTalk Communications Limited | 11 | 11 | 31 August 2011 | 31 July 2018 |
| Gamma Telecom Holdings Limited | 10 | 10 | 5 April 2004 | 30 June 2026 |
| Sky UK Limited | 10 | 10 | 25 June 2013 | 22 September 2021 |
| GCI Network Solutions Limited | 9 | 9 | 20 April 2017 | 26 February 2024 |
| Magrathea Telecommunications Limited | 7 | 7 | 17 November 2011 | 17 November 2011 |
| Colt Technology Services | 4 | 4 | 21 October 2011 | 25 September 2024 |
| Daisy Communications Ltd | 4 | 4 | 14 December 2011 | 14 December 2011 |
| Digital Space Group Limited | 3 | 3 | 29 November 2007 | 12 April 2016 |
| IOVOX Limited | 3 | 3 | 3 April 2012 | 28 March 2017 |
| Lumen Technologies UK Limited | 3 | 3 | 25 July 2011 | 25 July 2011 |
| Six Degrees Technology Group Limited | 3 | 3 | 14 January 2020 | 14 January 2020 |
| Adepteo Limited | 2 | 2 | 16 January 2017 | 16 January 2017 |
| DRD Communications Limited | 2 | 2 | 5 October 2023 | 5 October 2023 |
| Datazero Ltd | 2 | 2 | 2 November 2010 | 29 April 2019 |
| Digitech Solutions Global Limited | 2 | 2 | 23 April 2010 | 22 June 2012 |
| Fuse 2 Communications Ltd | 2 | 2 | 3 July 2017 | 22 January 2024 |
| Media Hawk Ltd | 2 | 2 | 10 April 2013 | 14 January 2019 |
| Served Up Limited | 2 | 2 | 1 March 2013 | 1 March 2013 |
| TELNYX UK LIMITED | 2 | 2 | 7 May 2020 | 23 July 2024 |
| VoiceHost Limited | 2 | 2 | 22 June 2010 | 20 August 2010 |
| Voiceflex Limited | 2 | 2 | 27 July 2007 | 14 June 2021 |
| Voxbone SA | 2 | 2 | 10 December 2007 | 28 March 2023 |
| (AQ) LIMITED | 1 | 1 | 17 October 2011 | 17 October 2011 |
| 24 Seven Cloud Communications Ltd | 1 | 1 | 17 January 2020 | 17 January 2020 |
| 8x8 Communications UK Limited | 1 | 1 | 26 March 2012 | 26 March 2012 |
| AQL Wholesale Ltd | 1 | 1 | 21 June 2006 | 21 June 2006 |
| Andrews & Arnold (Numbers) Ltd | 1 | 1 | 26 February 2009 | 26 February 2009 |
Showing the 30 largest of 110 holders.
Openreach exchanges at Chesterfield
Exchanges Openreach lists at this location in its copper stop-sell programme, with the date new copper orders stop.
- Chesterfield (CD) SLCDStop sell 26-May-25 · Tranche 16
- Holymoorside SLHLYStop sell 14-Feb-26 · Tranche 19
- Old Whittington (NEP) SLOLDStop sell 06-Nov-25 · Tranche 18
All number blocks on 01246first 200 of 424, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 124600 | Protected | — |
| +44 124601 | Protected | — |
| +44 124602 | Protected | — |
| +44 124603 | Protected | — |
| +44 124604 | Protected | — |
| +44 124605 | Protected | — |
| +44 124606 | Protected | — |
| +44 124607 | Protected | — |
| +44 124608 | Protected | — |
| +44 124609 | Protected | — |
| +44 124610 | Protected | — |
| +44 1246110 | Protected | — |
| +44 1246111 | Protected | — |
| +44 1246112 | Protected | — |
| +44 1246113 | Protected | — |
| +44 1246114 | Allocated | BT |
| +44 1246115 | Protected | — |
| +44 1246116 | Protected | — |
| +44 1246117 | Protected | — |
| +44 1246118 | Protected | — |
| +44 1246119 | Protected | — |
| +44 124612 | Protected | — |
| +44 124613 | Protected | — |
| +44 124614 | Protected | — |
| +44 124615 | Protected | — |
| +44 124616 | Protected | — |
| +44 124617 | Protected | — |
| +44 124618 | Protected | — |
| +44 124619 | Protected | — |
| +44 124620 | Allocated | BT |
| +44 124621 | Allocated | BT |
| +44 124622 | Allocated | BT |
| +44 124623 | Allocated | BT |
| +44 124624 | Allocated | BT |
| +44 124625 | Allocated | BT |
| +44 124626 | Allocated | BT |
| +44 124627 | Allocated | BT |
| +44 124628 | Allocated | BT |
| +44 124629 | Allocated | BT |
| +44 1246300 | Protected | — |
| +44 1246301 | Protected | — |
| +44 1246302 | Protected | — |
| +44 1246303 | Protected | — |
| +44 1246304 | Protected | — |
| +44 1246305 | Allocated | Daisy Communications Ltd |
| +44 1246306 | Allocated | Daisy Communications Ltd |
| +44 1246307 | Allocated | Daisy Communications Ltd |
| +44 1246308 | Allocated | Daisy Communications Ltd |
| +44 1246309 | Protected | — |
| +44 124631 | Allocated | TelNG Limited |
| +44 124632 | Allocated | TGL Services (UK) Ltd |
| +44 1246330 | Allocated | Lumen Technologies UK Limited |
| +44 1246331 | Protected | — |
| +44 1246332 | Protected | — |
| +44 1246333 | Allocated | Lumen Technologies UK Limited |
| +44 1246334 | Protected | — |
| +44 1246335 | Protected | — |
| +44 1246336 | Protected | — |
| +44 1246337 | Protected | — |
| +44 1246338 | Protected | — |
| +44 1246339 | Allocated | Lumen Technologies UK Limited |
| +44 124634 | Allocated | BT |
| +44 124635 | Allocated | Vodafone Ltd (C&W) |
| +44 1246360 | Allocated | Barritel Limited |
| +44 1246361 | Allocated | Barritel Limited |
| +44 1246362 | Allocated | Barritel Limited |
| +44 1246363 | Allocated | Barritel Limited |
| +44 1246364 | Protected | — |
| +44 1246365 | Allocated | Barritel Limited |
| +44 1246366 | Allocated | Barritel Limited |
| +44 1246367 | Allocated | Barritel Limited |
| +44 1246368 | Protected | — |
| +44 1246369 | Allocated | Barritel Limited |
| +44 1246370 | Protected | — |
| +44 1246371 | Protected | — |
| +44 1246372 | Protected | — |
| +44 1246373 | Protected | — |
| +44 1246374 | Protected | — |
| +44 1246375 | Protected | — |
| +44 1246376 | Protected | — |
| +44 1246377 | Protected | — |
| +44 1246378 | Protected | — |
| +44 1246379 | Protected | — |
| +44 124638 | Allocated | Gamma Telecom Holdings Limited |
| +44 1246390 | Allocated | Barritel Limited |
| +44 1246391 | Allocated | Sky UK Limited |
| +44 1246392 | Allocated | Barritel Limited |
| +44 1246393 | Allocated | Adepteo Limited |
| +44 1246394 | Allocated | Adepteo Limited |
| +44 1246395 | Allocated | TalkTalk Communications Limited |
| +44 1246396 | Allocated | Mintaka Limited |
| +44 1246397 | Allocated | Sky UK Limited |
| +44 1246398 | Allocated | IOVOX Limited |
| +44 1246399 | Protected | — |
| +44 124640 | Allocated | Redcentric Solutions Limited |
| +44 124641 | Allocated | BT |
| +44 1246420 | Protected | — |
| +44 1246421 | Protected | — |
| +44 1246422 | Protected | — |
| +44 1246423 | Allocated | Digital Space Group Limited |
| +44 1246424 | Protected | — |
| +44 1246425 | Protected | — |
| +44 1246426 | Protected | — |
| +44 1246427 | Protected | — |
| +44 1246428 | Protected | — |
| +44 1246429 | Protected | — |
| +44 124643 | Allocated | BT |
| +44 1246440 | Protected | — |
| +44 1246441 | Protected | — |
| +44 1246442 | Protected | — |
| +44 1246443 | Protected | — |
| +44 1246444 | Protected | — |
| +44 1246445 | Protected | — |
| +44 1246446 | Protected | — |
| +44 1246447 | Protected | — |
| +44 1246448 | Protected | — |
| +44 1246449 | Allocated | Vodafone Ltd (C&W) |
| +44 124645 | Allocated | BT |
| +44 124646 | Allocated | Sky UK Limited |
| +44 124647 | Allocated | BT |
| +44 124648 | Allocated | AQL Wholesale Ltd |
| +44 1246490 | Allocated | Linear Telecoms Limited |
| +44 1246491 | Allocated | Bicom Systems EURL |
| +44 1246492 | Allocated | 8x8 Communications UK Limited |
| +44 1246493 | Allocated | ICC Networks Ltd |
| +44 1246494 | Allocated | IOVOX Limited |
| +44 1246495 | Allocated | Orange Business Holdings UK Limited |
| +44 1246496 | Allocated | Ziron Limited |
| +44 1246497 | Allocated | Content Guru Limited |
| +44 1246498 | Allocated | TalkTalk Communications Limited |
| +44 1246499 | Allocated | Datazero Ltd |
| +44 124650 | Allocated | Vodafone Ltd (C&W) |
| +44 124651 | Allocated | Vodafone Ltd (C&W) |
| +44 124652 | Allocated | BT |
| +44 124653 | Allocated | Flextel Limited |
| +44 124654 | Allocated | BT |
| +44 124655 | Allocated | BT |
| +44 124656 | Allocated | BT |
| +44 124657 | Allocated | BT |
| +44 124658 | Allocated | BT |
| +44 124659 | Allocated | BT |
| +44 1246600 | Allocated | Digitech Solutions Global Limited |
| +44 1246601 | Allocated | BT |
| +44 1246602 | Allocated | Sky UK Limited |
| +44 1246603 | Allocated | Sky UK Limited |
| +44 1246604 | Allocated | BT |
| +44 1246605 | Allocated | Voiceflex Limited |
| +44 1246606 | Allocated | VOXYONDER NETWORK SERVICES UK LTD |
| +44 1246607 | Allocated | Gamma Telecom Holdings Limited |
| +44 1246608 | Allocated | Belgacom International Carrier Services SA |
| +44 1246609 | Free | — |
| +44 124661 | Protected | — |
| +44 124662 | Allocated | Virgin Media Limited |
| +44 124663 | Protected | — |
| +44 1246640 | Allocated | GCI Network Solutions Limited |
| +44 1246641 | Allocated | GCI Network Solutions Limited |
| +44 1246642 | Allocated | GCI Network Solutions Limited |
| +44 1246643 | Allocated | GCI Network Solutions Limited |
| +44 1246644 | Allocated | GCI Network Solutions Limited |
| +44 1246645 | Protected | — |
| +44 1246646 | Allocated | GCI Network Solutions Limited |
| +44 1246647 | Protected | — |
| +44 1246648 | Allocated | GCI Network Solutions Limited |
| +44 1246649 | Protected | — |
| +44 1246650 | Protected | — |
| +44 1246651 | Protected | — |
| +44 1246652 | Protected | — |
| +44 1246653 | Protected | — |
| +44 1246654 | Protected | — |
| +44 1246655 | Protected | — |
| +44 1246656 | Protected | — |
| +44 1246657 | Protected | — |
| +44 1246658 | Protected | — |
| +44 1246659 | Protected | — |
| +44 124666 | Allocated | GCI Network Solutions Limited |
| +44 124667 | Allocated | Vodafone Ltd (C&W) |
| +44 1246680 | Allocated | Vodafone Ltd (C&W) |
| +44 1246681 | Allocated | Vodafone Ltd (C&W) |
| +44 1246682 | Allocated | Vodafone Ltd (C&W) |
| +44 1246683 | Allocated | Vodafone Ltd (C&W) |
| +44 1246684 | Allocated | Vodafone Ltd (C&W) |
| +44 1246685 | Protected | — |
| +44 1246686 | Protected | — |
| +44 1246687 | Allocated | Vodafone Ltd (C&W) |
| +44 1246688 | Protected | — |
| +44 1246689 | Allocated | Vodafone Ltd (C&W) |
| +44 1246690 | Allocated | VoiceHost Limited |
| +44 1246691 | Protected | — |
| +44 1246692 | Protected | — |
| +44 1246693 | Protected | — |
| +44 1246694 | Protected | — |
| +44 1246695 | Protected | — |
| +44 1246696 | Allocated | VoiceHost Limited |
| +44 1246697 | Protected | — |
| +44 1246698 | Protected | — |
| +44 1246699 | Protected | — |
| +44 124670 | Allocated | TTNC Limited |
| +44 1246710 | Protected | — |
| +44 1246711 | Protected | — |
| +44 1246712 | Protected | — |
Related lookups
- 01629 Matlock14 km away
- 01433 Hathersage18 km away
- 01623 Mansfield18 km away
- 01773 Ripley22 km away
- BT37 allocated blocks on 01246
- Barritel Limited12 allocated blocks on 01246
- Vodafone Ltd (C&W)12 allocated blocks on 01246
- All UK towns A–ZDialling codes by town
- More Derbyshire 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 01246
Where is area code 01246?
01246 is Ofcom's Chesterfield numbering area, in Derbyshire, East Midlands England. Its exchange town is in Derbyshire. From abroad, drop the 0 and dial +44 1246.
Do I need to dial 01246 for a local call?
Traditionally not from another 01246 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01246 first always works, and mobiles always need it.
How are 01246 numbers written?
Numbers on 01246 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01246 234 567. From abroad the leading zero is dropped: +44 1246 then the local number.
What was the 01246 area code before?
01246 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 0246. Old signage or stationery showing 0246 refers to the same Chesterfield numbers.
Which phone companies hold 01246 numbers?
Ofcom lists 110 providers with allocated blocks on 01246. The largest are BT with 37 of the 235 allocated blocks, Barritel Limited with 12 of the 235 allocated blocks and Vodafone with 12 of the 235 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 01246?
By distance between exchange towns, the nearest other codes are 01629 Matlock (14 km), 01433 Hathersage (18 km), 01623 Mansfield (18 km) and 01773 Ripley (22 km).
How do I report a scam call from a 01246 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.