UK area code
01529 area code — Sleaford
01529 is Ofcom’s Sleaford numbering area, in Lincolnshire, East Midlands England. 86 phone companies hold its 111 allocated number blocks. Its numbers are written like 01529 234 567. The nearest other codes are 01400 Honington (12 km) and 01526 Martin (17 km).
01529 at a glance
- Ofcom area name
- Sleaford
- County
- Lincolnshire
- Council area
- Lincolnshire
- Region
- East Midlands England
- Number format
- 01529 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0529)
- Allocated blocks
- 111 of 424 (26%) across 86 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 01529 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.
01529 history and number format
Number format: Numbers on 01529 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01529 234 567.
Before 1995: 01529 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 0529.
Local dialling: Traditionally not from another 01529 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01529 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01529 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 01529 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01529 numbers
Every Ofcom range holder with blocks on 01529, 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 | 11 | 11 | 15 July 1994 | 23 December 2019 |
| Vodafone Ltd (C&W) | 9 | 9 | 5 September 2013 | 15 November 2021 |
| Sky UK Limited | 3 | 3 | 2 July 2013 | 8 September 2020 |
| TalkTalk Communications Limited | 3 | 3 | 19 January 2012 | 12 February 2013 |
| Digital Space Group Limited | 2 | 2 | 1 May 2008 | 15 March 2016 |
| Fuse 2 Communications Ltd | 2 | 2 | 3 July 2017 | 22 January 2024 |
| GCI Network Solutions Limited | 2 | 2 | 2 May 2017 | 20 December 2023 |
| (AQ) LIMITED | 1 | 1 | 19 October 2011 | 19 October 2011 |
| 24 Seven Cloud Communications Ltd | 1 | 1 | 21 January 2020 | 21 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 | 13 March 2009 | 13 March 2009 |
| Atomstream Limited | 1 | 1 | 14 May 2010 | 14 May 2010 |
| Barritel Limited | 1 | 1 | 15 August 2006 | 15 August 2006 |
| Belgacom International Carrier Services SA | 1 | 1 | 24 April 2020 | 24 April 2020 |
| Bicom Systems EURL | 1 | 1 | 5 March 2012 | 5 March 2012 |
| Bink Networks Ltd | 1 | 1 | 11 April 2023 | 11 April 2023 |
| CFL Communications Ltd | 1 | 1 | 13 July 2009 | 13 July 2009 |
| Calltracks Limited | 1 | 1 | 31 January 2014 | 31 January 2014 |
| Colt Technology Services | 1 | 1 | 20 June 2016 | 20 June 2016 |
| Content Guru Limited | 1 | 1 | 12 October 2012 | 12 October 2012 |
| DIDWW Ireland Limited | 1 | 1 | 27 January 2020 | 27 January 2020 |
| Datazero Ltd | 1 | 1 | 15 November 2010 | 15 November 2010 |
| Dial 9 Communications Limited | 1 | 1 | 10 December 2019 | 10 December 2019 |
| Digitech Solutions Global Limited | 1 | 1 | 27 April 2010 | 27 April 2010 |
| EVE CONNECT LTD | 1 | 1 | 15 June 2022 | 15 June 2022 |
| Flextel Limited | 1 | 1 | 21 October 2005 | 21 October 2005 |
| Gamma Telecom Holdings Limited | 1 | 1 | 8 March 2005 | 8 March 2005 |
Showing the 30 largest of 86 holders.
Openreach exchanges at Sleaford
Exchanges Openreach lists at this location in its copper stop-sell programme, with the date new copper orders stop.
- Sleaford EMSLFRDStop sell 08-Feb-23 · Tranche 7
All number blocks on 01529first 200 of 424, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 152900 | Protected | — |
| +44 152901 | Protected | — |
| +44 152902 | Protected | — |
| +44 152903 | Protected | — |
| +44 152904 | Protected | — |
| +44 152905 | Protected | — |
| +44 152906 | Protected | — |
| +44 152907 | Protected | — |
| +44 152908 | Protected | — |
| +44 152909 | Protected | — |
| +44 152910 | Protected | — |
| +44 152911 | Protected | — |
| +44 152912 | Protected | — |
| +44 152913 | Protected | — |
| +44 152914 | Protected | — |
| +44 152915 | Protected | — |
| +44 152916 | Protected | — |
| +44 152917 | Protected | — |
| +44 152918 | Protected | — |
| +44 152919 | Protected | — |
| +44 152920 | Allocated | Net-Work Internet Ltd |
| +44 1529210 | Allocated | Linear Telecoms Limited |
| +44 1529211 | Allocated | Alnitak GmbH |
| +44 1529212 | Allocated | Number Services Ltd. |
| +44 1529213 | Free | — |
| +44 1529214 | Free | — |
| +44 1529215 | Free | — |
| +44 1529216 | Free | — |
| +44 1529217 | Free | — |
| +44 1529218 | Protected | — |
| +44 1529219 | Protected | — |
| +44 152922 | Allocated | BT |
| +44 152923 | Protected | — |
| +44 152924 | Allocated | BT |
| +44 1529250 | Allocated | Vodafone Ltd (C&W) |
| +44 1529251 | Allocated | Vodafone Ltd (C&W) |
| +44 1529252 | Allocated | Vodafone Ltd (C&W) |
| +44 1529253 | Allocated | Vodafone Ltd (C&W) |
| +44 1529254 | Protected | — |
| +44 1529255 | Protected | — |
| +44 1529256 | Allocated | Vodafone Ltd (C&W) |
| +44 1529257 | Allocated | Vodafone Ltd (C&W) |
| +44 1529258 | Allocated | Vodafone Ltd (C&W) |
| +44 1529259 | Allocated | Vodafone Ltd (C&W) |
| +44 1529260 | Allocated | Datazero Ltd |
| +44 1529261 | Allocated | Telephone Box Limited |
| +44 1529262 | Protected | — |
| +44 1529263 | Allocated | Phone Co-Op Numbering Limited |
| +44 1529264 | Protected | — |
| +44 1529265 | Allocated | Invosys Limited |
| +44 1529266 | Allocated | INTELLIGENT EXCHANGES LIMITED |
| +44 1529267 | Allocated | Nexbridge Communications Limited |
| +44 1529268 | Protected | — |
| +44 1529269 | Allocated | TalkTalk Communications Limited |
| +44 1529270 | Protected | — |
| +44 1529271 | Protected | — |
| +44 1529272 | Protected | — |
| +44 1529273 | Protected | — |
| +44 1529274 | Protected | — |
| +44 1529275 | Protected | — |
| +44 1529276 | Protected | — |
| +44 1529277 | Protected | — |
| +44 1529278 | Protected | — |
| +44 1529279 | Protected | — |
| +44 152928 | Allocated | GCI Network Solutions Limited |
| +44 152929 | Allocated | Magrathea Telecommunications Limited |
| +44 152930 | Allocated | BT |
| +44 152931 | Allocated | Telecom2 Limited |
| +44 152932 | Allocated | Digital Space Group Limited |
| +44 152933 | Allocated | Nodemax Limited |
| +44 152934 | Protected | — |
| +44 1529350 | Allocated | Voxbone SA |
| +44 1529351 | Protected | — |
| +44 1529352 | Protected | — |
| +44 1529353 | Protected | — |
| +44 1529354 | Protected | — |
| +44 1529355 | Protected | — |
| +44 1529356 | Protected | — |
| +44 1529357 | Protected | — |
| +44 1529358 | Protected | — |
| +44 1529359 | Protected | — |
| +44 152936 | Protected | — |
| +44 152937 | Allocated | Solutios Limited |
| +44 152938 | Allocated | Mars Communications Limited |
| +44 152939 | Quarantined | — |
| +44 152940 | Allocated | Gamma Telecom Holdings Limited |
| +44 152941 | Allocated | BT |
| +44 152942 | Allocated | BT |
| +44 152943 | Allocated | Barritel Limited |
| +44 152944 | Allocated | Vodafone Ltd (C&W) |
| +44 152945 | Allocated | BT |
| +44 152946 | Allocated | BT |
| +44 152947 | Allocated | Flextel Limited |
| +44 152948 | Allocated | BT |
| +44 152949 | Allocated | BT |
| +44 1529500 | Protected | — |
| +44 1529501 | Protected | — |
| +44 1529502 | Protected | — |
| +44 1529503 | Protected | — |
| +44 1529504 | Protected | — |
| +44 1529505 | Protected | — |
| +44 1529506 | Protected | — |
| +44 1529507 | Protected | — |
| +44 1529508 | Protected | — |
| +44 1529509 | Protected | — |
| +44 152951 | Allocated | TelNG Limited |
| +44 152952 | Protected | — |
| +44 152953 | Allocated | (AQ) LIMITED |
| +44 152954 | Allocated | Voiceflex Limited |
| +44 152955 | Allocated | Redcentric Solutions Limited |
| +44 152956 | Allocated | VoIP-Un Limited |
| +44 152957 | Allocated | AQL Wholesale Ltd |
| +44 1529580 | Protected | — |
| +44 1529581 | Protected | — |
| +44 1529582 | Protected | — |
| +44 1529583 | Protected | — |
| +44 1529584 | Protected | — |
| +44 1529585 | Protected | — |
| +44 1529586 | Protected | — |
| +44 1529587 | Allocated | Digital Space Group Limited |
| +44 1529588 | Protected | — |
| +44 1529589 | Protected | — |
| +44 152959 | Allocated | Localphone Limited |
| +44 152960 | Allocated | Andrews & Arnold (Numbers) Ltd |
| +44 152961 | Allocated | Nexus Telecommunications Limited |
| +44 152962 | Quarantined | — |
| +44 152963 | Allocated | CFL Communications Ltd |
| +44 152964 | Protected | — |
| +44 152965 | Protected | — |
| +44 1529660 | Allocated | Sky UK Limited |
| +44 1529661 | Allocated | Digitech Solutions Global Limited |
| +44 1529662 | Allocated | Calltracks Limited |
| +44 1529663 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1529664 | Allocated | GCI Network Solutions Limited |
| +44 1529665 | Allocated | Atomstream Limited |
| +44 1529666 | Allocated | Suretec Systems Ltd |
| +44 1529667 | Allocated | Telappliant Limited |
| +44 1529668 | Allocated | VoiceHost Limited |
| +44 1529669 | Allocated | Windsor Telecom Limited |
| +44 1529670 | Protected | — |
| +44 1529671 | Allocated | Invoco Ltd |
| +44 1529672 | Allocated | Hello Telecom (UK) Limited |
| +44 1529673 | Allocated | Internexus Networks Limited |
| +44 1529674 | Allocated | 8x8 Communications UK Limited |
| +44 1529675 | Allocated | ICC Networks Ltd |
| +44 1529676 | Protected | — |
| +44 1529677 | Allocated | Nuso Cloud UK Limited |
| +44 1529678 | Allocated | Orbtalk Limited |
| +44 1529679 | Allocated | Bicom Systems EURL |
| +44 1529680 | Allocated | Minotaur Telecom Limited |
| +44 1529681 | Allocated | Ziron Limited |
| +44 1529682 | Protected | — |
| +44 1529683 | Allocated | Kalnet4U Ltd |
| +44 1529684 | Allocated | IOVOX Limited |
| +44 1529685 | Allocated | Fuse 2 Communications Ltd |
| +44 1529686 | Allocated | Content Guru Limited |
| +44 1529687 | Allocated | Redwood Technologies Ltd |
| +44 1529688 | Allocated | Simwood eSMS Limited |
| +44 1529689 | Allocated | XoverX Ltd |
| +44 1529690 | Allocated | SiPalto Ltd |
| +44 1529691 | Allocated | Sky UK Limited |
| +44 1529692 | Allocated | Virgin Media Limited |
| +44 1529693 | Allocated | KCOM Group Ltd |
| +44 1529694 | Free | — |
| +44 1529695 | Allocated | Mi Telecom Limited |
| +44 1529696 | Allocated | VOXYONDER NETWORK SERVICES UK LTD |
| +44 1529697 | Allocated | Bink Networks Ltd |
| +44 1529698 | Allocated | Lanonyx Telecom Limited |
| +44 1529699 | Allocated | ICUK Computing Services Limited |
| +44 1529700 | Allocated | Sky UK Limited |
| +44 1529701 | Allocated | BT |
| +44 1529702 | Protected | — |
| +44 1529703 | Protected | — |
| +44 1529704 | Protected | — |
| +44 1529705 | Allocated | M247 Ltd |
| +44 1529706 | Allocated | TGL Services (UK) Ltd |
| +44 1529707 | Allocated | YayYay Limited |
| +44 1529708 | Allocated | I.T Communications Limited |
| +44 1529709 | Allocated | Colt Technology Services |
| +44 1529710 | Allocated | Zapappi Ltd |
| +44 1529711 | Allocated | Adepteo Limited |
| +44 1529712 | Allocated | BT |
| +44 1529713 | Allocated | 24 Seven Cloud Communications Ltd |
| +44 1529714 | Allocated | Dial 9 Communications Limited |
| +44 1529715 | Allocated | EVE CONNECT LTD |
| +44 1529716 | Allocated | DIDWW Ireland Limited |
| +44 1529717 | Allocated | IP Voice Networks Ltd |
| +44 1529718 | Allocated | Belgacom International Carrier Services SA |
| +44 1529719 | Allocated | Fuse 2 Communications Ltd |
| +44 1529720 | Protected | — |
| +44 1529721 | Protected | — |
| +44 1529722 | Protected | — |
| +44 1529723 | Protected | — |
| +44 1529724 | Protected | — |
| +44 1529725 | Protected | — |
| +44 1529726 | Protected | — |
| +44 1529727 | Protected | — |
| +44 1529728 | Protected | — |
| +44 1529729 | Protected | — |
| +44 1529730 | Protected | — |
Related lookups
- 01400 Honington12 km away
- 01526 Martin17 km away
- 01476 Grantham18 km away
- 01778 Bourne25 km away
- BT11 allocated blocks on 01529
- Vodafone Ltd (C&W)9 allocated blocks on 01529
- Sky UK Limited3 allocated blocks on 01529
- All UK towns A–ZDialling codes by town
- More Lincolnshire 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 01529
Where is area code 01529?
01529 is Ofcom's Sleaford numbering area, in Lincolnshire, East Midlands England. Its exchange town is in Lincolnshire. From abroad, drop the 0 and dial +44 1529.
Do I need to dial 01529 for a local call?
Traditionally not from another 01529 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01529 first always works, and mobiles always need it.
How are 01529 numbers written?
Numbers on 01529 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01529 234 567. From abroad the leading zero is dropped: +44 1529 then the local number.
What was the 01529 area code before?
01529 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 0529. Old signage or stationery showing 0529 refers to the same Sleaford numbers.
Which phone companies hold 01529 numbers?
Ofcom lists 86 providers with allocated blocks on 01529. The largest are BT with 11 of the 111 allocated blocks, Vodafone with 9 of the 111 allocated blocks and Sky UK Limited with 3 of the 111 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 01529?
By distance between exchange towns, the nearest other codes are 01400 Honington (12 km), 01526 Martin (17 km), 01476 Grantham (18 km) and 01778 Bourne (25 km).
How do I report a scam call from a 01529 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.