UK area code
01553 area code — King's Lynn
01553 is Ofcom’s Kings Lynn numbering area, in Norfolk, East of England England. 97 phone companies hold its 147 allocated number blocks. Its numbers are written like 01553 234 567. The nearest other codes are 01366 Downham Market (17 km) and 01945 Wisbech (20 km).
01553 at a glance
- Ofcom area name
- Kings Lynn
- County
- Norfolk
- Council area
- Norfolk
- Region
- East of England England
- Number format
- 01553 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0553)
- Allocated blocks
- 147 of 478 (31%) across 97 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 01553 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.
01553 history and number format
Number format: Numbers on 01553 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01553 234 567.
Before 1995: 01553 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 0553.
Local dialling: Traditionally not from another 01553 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01553 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01553 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 01553 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01553 numbers
Every Ofcom range holder with blocks on 01553, 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 | 16 | 16 | 15 July 1994 | 11 January 2022 |
| GCI Network Solutions Limited | 11 | 11 | 2 May 2017 | 26 February 2024 |
| Vodafone Ltd (C&W) | 8 | 8 | 5 September 2013 | 16 November 2021 |
| Sky UK Limited | 6 | 6 | 21 August 2013 | 14 June 2019 |
| TalkTalk Communications Limited | 6 | 6 | 20 January 2012 | 25 July 2018 |
| Resilient Limited | 3 | 3 | 18 May 2012 | 18 May 2012 |
| Colt Technology Services | 2 | 2 | 28 October 2015 | 18 August 2022 |
| Digital Space Group Limited | 2 | 2 | 15 March 2016 | 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 |
| TGL Services (UK) Ltd | 2 | 2 | 2 February 2015 | 2 February 2015 |
| (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 | 1 November 2004 | 1 November 2004 |
| Adepteo Limited | 1 | 1 | 21 December 2016 | 21 December 2016 |
| Alnitak GmbH | 1 | 1 | 26 October 2016 | 26 October 2016 |
| Andrews & Arnold (Numbers) Ltd | 1 | 1 | 19 March 2009 | 19 March 2009 |
| Atomstream Limited | 1 | 1 | 24 March 2010 | 24 March 2010 |
| Barritec Limited | 1 | 1 | 23 September 2011 | 23 September 2011 |
| Barritel Limited | 1 | 1 | 15 August 2006 | 15 August 2006 |
| Belgacom International Carrier Services SA | 1 | 1 | 6 February 2020 | 6 February 2020 |
| Bink Networks Ltd | 1 | 1 | 3 April 2023 | 3 April 2023 |
| CFL Communications Ltd | 1 | 1 | 13 July 2009 | 13 July 2009 |
| Calltracks Limited | 1 | 1 | 19 October 2021 | 19 October 2021 |
| Content Guru Limited | 1 | 1 | 12 October 2012 | 12 October 2012 |
| Convergence Group (wireless) Networks Limited | 1 | 1 | 21 May 2019 | 21 May 2019 |
| Core Telecom Limited | 1 | 1 | 5 August 2010 | 5 August 2010 |
| DIDWW Ireland Limited | 1 | 1 | 22 January 2019 | 22 January 2019 |
Showing the 30 largest of 97 holders.
Openreach exchanges at King's Lynn
Exchanges Openreach lists at this location in its copper stop-sell programme, with the date new copper orders stop.
- Kings Lynn EAKLNStop sell TBD · TBD
All number blocks on 01553first 200 of 478, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 155300 | Protected | — |
| +44 155301 | Protected | — |
| +44 155302 | Protected | — |
| +44 155303 | Protected | — |
| +44 155304 | Protected | — |
| +44 155305 | Protected | — |
| +44 155306 | Protected | — |
| +44 155307 | Protected | — |
| +44 155308 | Protected | — |
| +44 155309 | Protected | — |
| +44 155310 | Protected | — |
| +44 155311 | Protected | — |
| +44 155312 | Protected | — |
| +44 155313 | Protected | — |
| +44 155314 | Protected | — |
| +44 155315 | Protected | — |
| +44 155316 | Protected | — |
| +44 155317 | Protected | — |
| +44 155318 | Protected | — |
| +44 155319 | Protected | — |
| +44 1553200 | Protected | — |
| +44 1553201 | Protected | — |
| +44 1553202 | Protected | — |
| +44 1553203 | Protected | — |
| +44 1553204 | Protected | — |
| +44 1553205 | Protected | — |
| +44 1553206 | Protected | — |
| +44 1553207 | Protected | — |
| +44 1553208 | Protected | — |
| +44 1553209 | Protected | — |
| +44 155321 | Allocated | Verizon UK Limited |
| +44 155322 | Allocated | Voiceflex Limited |
| +44 155323 | Allocated | TelNG Limited |
| +44 155324 | Allocated | Vodafone Ltd (C&W) |
| +44 155325 | Allocated | TGL Services (UK) Ltd |
| +44 155326 | Allocated | Localphone Limited |
| +44 1553270 | Protected | — |
| +44 1553271 | Protected | — |
| +44 1553272 | Protected | — |
| +44 1553273 | Protected | — |
| +44 1553274 | Protected | — |
| +44 1553275 | Protected | — |
| +44 1553276 | Protected | — |
| +44 1553277 | Allocated | TalkTalk Communications Limited |
| +44 1553278 | Allocated | TalkTalk Communications Limited |
| +44 1553279 | Allocated | TalkTalk Communications Limited |
| +44 155328 | Protected | — |
| +44 1553290 | Allocated | Resilient Limited |
| +44 1553291 | Allocated | Resilient Limited |
| +44 1553292 | Protected | — |
| +44 1553293 | Protected | — |
| +44 1553294 | Protected | — |
| +44 1553295 | Protected | — |
| +44 1553296 | Protected | — |
| +44 1553297 | Protected | — |
| +44 1553298 | Protected | — |
| +44 1553299 | Allocated | Resilient Limited |
| +44 155330 | Allocated | (AQ) LIMITED |
| +44 155331 | Allocated | VoIP-Un Limited |
| +44 1553320 | Protected | — |
| +44 1553321 | Protected | — |
| +44 1553322 | Protected | — |
| +44 1553323 | Protected | — |
| +44 1553324 | Protected | — |
| +44 1553325 | Protected | — |
| +44 1553326 | Protected | — |
| +44 1553327 | Allocated | Digital Space Group Limited |
| +44 1553328 | Protected | — |
| +44 1553329 | Protected | — |
| +44 1553330 | Allocated | GCI Network Solutions Limited |
| +44 1553331 | Allocated | GCI Network Solutions Limited |
| +44 1553332 | Allocated | GCI Network Solutions Limited |
| +44 1553333 | Allocated | GCI Network Solutions Limited |
| +44 1553334 | Allocated | GCI Network Solutions Limited |
| +44 1553335 | Allocated | GCI Network Solutions Limited |
| +44 1553336 | Allocated | GCI Network Solutions Limited |
| +44 1553337 | Allocated | GCI Network Solutions Limited |
| +44 1553338 | Allocated | GCI Network Solutions Limited |
| +44 1553339 | Allocated | GCI Network Solutions Limited |
| +44 1553340 | Allocated | TalkTalk Communications Limited |
| +44 1553341 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1553342 | Allocated | Solutios Limited |
| +44 1553343 | Allocated | Nodemax Limited |
| +44 1553344 | Allocated | Net-Work Internet Ltd |
| +44 1553345 | Protected | — |
| +44 1553346 | Allocated | Telecom2 Limited |
| +44 1553347 | Protected | — |
| +44 1553348 | Allocated | Voxbone SA |
| +44 1553349 | Allocated | Sky UK Limited |
| +44 1553350 | Allocated | Mars Communications Limited |
| +44 1553351 | Quarantined | — |
| +44 1553352 | Allocated | Andrews & Arnold (Numbers) Ltd |
| +44 1553353 | Allocated | Datazero Ltd |
| +44 1553354 | Allocated | Invade International Ltd |
| +44 1553355 | Allocated | Telecoms World Limited |
| +44 1553356 | Allocated | Convergence Group (wireless) Networks Limited |
| +44 1553357 | Protected | — |
| +44 1553358 | Allocated | CFL Communications Ltd |
| +44 1553359 | Quarantined | — |
| +44 1553360 | Allocated | Nexus Telecommunications Limited |
| +44 1553361 | Protected | — |
| +44 1553362 | Allocated | Atomstream Limited |
| +44 1553363 | Allocated | Nuso Cloud UK Limited |
| +44 1553364 | Protected | — |
| +44 1553365 | Allocated | Digitech Solutions Global Limited |
| +44 1553366 | Allocated | Suretec Systems Ltd |
| +44 1553367 | Allocated | Core Telecom Limited |
| +44 1553368 | Allocated | Windsor Telecom Limited |
| +44 1553369 | Allocated | Telephone Box Limited |
| +44 1553370 | Protected | — |
| +44 1553371 | Allocated | Phone Co-Op Numbering Limited |
| +44 1553372 | Protected | — |
| +44 1553373 | Allocated | Invosys Limited |
| +44 1553374 | Allocated | Nexbridge Communications Limited |
| +44 1553375 | Allocated | INTELLIGENT EXCHANGES LIMITED |
| +44 1553376 | Allocated | Barritec Limited |
| +44 1553377 | Protected | — |
| +44 1553378 | Allocated | WightFibre Limited |
| +44 1553379 | Allocated | Sky UK Limited |
| +44 1553380 | Allocated | Invoco Ltd |
| +44 1553381 | Allocated | Media Hawk Ltd |
| +44 1553382 | Allocated | Hello Telecom (UK) Limited |
| +44 1553383 | Allocated | Internexus Networks Limited |
| +44 1553384 | Allocated | 8x8 Communications UK Limited |
| +44 1553385 | Allocated | ICC Networks Ltd |
| +44 1553386 | Allocated | Simwood eSMS Limited |
| +44 1553387 | Allocated | IOVOX Limited |
| +44 1553388 | Protected | — |
| +44 1553389 | Allocated | Ziron Limited |
| +44 1553390 | Allocated | Sky UK Limited |
| +44 1553391 | Allocated | X-on Health Limited |
| +44 1553392 | Allocated | Kalnet4U Ltd |
| +44 1553393 | Allocated | Content Guru Limited |
| +44 1553394 | Allocated | Minotaur Telecom Limited |
| +44 1553395 | Allocated | Fuse 2 Communications Ltd |
| +44 1553396 | Allocated | Liquid 11 Limited |
| +44 1553397 | Allocated | XoverX Ltd |
| +44 1553398 | Protected | — |
| +44 1553399 | Protected | — |
| +44 1553400 | Allocated | BT |
| +44 1553401 | Allocated | BT |
| +44 1553402 | Protected | — |
| +44 1553403 | Allocated | Redwood Technologies Ltd |
| +44 1553404 | Allocated | TalkTalk Communications Limited |
| +44 1553405 | Allocated | YayYay Limited |
| +44 1553406 | Allocated | Sky UK Limited |
| +44 1553407 | Allocated | Colt Technology Services |
| +44 1553408 | Protected | — |
| +44 1553409 | Allocated | Sky UK Limited |
| +44 1553410 | Allocated | Orange Business Holdings UK Limited |
| +44 1553411 | Protected | — |
| +44 1553412 | Allocated | Adepteo Limited |
| +44 1553413 | Allocated | Alnitak GmbH |
| +44 1553414 | Allocated | I.T Communications Limited |
| +44 1553415 | Allocated | Number Services Ltd. |
| +44 1553416 | Allocated | Orbtalk Limited |
| +44 1553417 | Allocated | Telappliant Limited |
| +44 1553418 | Allocated | Fuse 2 Communications Ltd |
| +44 1553419 | Allocated | IP Voice Networks Ltd |
| +44 1553420 | Allocated | Lanonyx Telecom Limited |
| +44 1553421 | Allocated | Virgin Media Limited |
| +44 1553422 | Allocated | Calltracks Limited |
| +44 1553423 | Allocated | BT |
| +44 1553424 | Allocated | VOXYONDER NETWORK SERVICES UK LTD |
| +44 1553425 | Free | — |
| +44 1553426 | Free | — |
| +44 1553427 | Free | — |
| +44 1553428 | Free | — |
| +44 1553429 | Allocated | SiPalto Ltd |
| +44 1553430 | Allocated | Bink Networks Ltd |
| +44 1553431 | Free | — |
| +44 1553432 | Allocated | Colt Technology Services |
| +44 1553433 | Allocated | Mi Telecom Limited |
| +44 1553434 | Allocated | KCOM Group Ltd |
| +44 1553435 | Free | — |
| +44 1553436 | Protected | — |
| +44 1553437 | Protected | — |
| +44 1553438 | Protected | — |
| +44 1553439 | Protected | — |
| +44 1553440 | Protected | — |
| +44 1553441 | Protected | — |
| +44 1553442 | Protected | — |
| +44 1553443 | Protected | — |
| +44 1553444 | Protected | — |
| +44 1553445 | Protected | — |
| +44 1553446 | Protected | — |
| +44 1553447 | Protected | — |
| +44 1553448 | Protected | — |
| +44 1553449 | Protected | — |
| +44 1553450 | Allocated | TalkTalk Communications Limited |
| +44 1553451 | Allocated | Sky UK Limited |
| +44 1553452 | Allocated | Dial 9 Communications Limited |
| +44 1553453 | Allocated | 24 Seven Cloud Communications Ltd |
| +44 1553454 | Allocated | EVE CONNECT LTD |
| +44 1553455 | Allocated | Zapappi Ltd |
| +44 1553456 | Allocated | DIDWW Ireland Limited |
| +44 1553457 | Allocated | ICUK Computing Services Limited |
| +44 1553458 | Allocated | Belgacom International Carrier Services SA |
| +44 1553459 | Free | — |
| +44 1553460 | Protected | — |
Related lookups
- 01366 Downham Market17 km away
- 01945 Wisbech20 km away
- 01485 Hunstanton21 km away
- 01760 Swaffham21 km away
- BT16 allocated blocks on 01553
- GCI Network Solutions Limited11 allocated blocks on 01553
- Vodafone Ltd (C&W)8 allocated blocks on 01553
- All UK towns A–ZDialling codes by town
- More Norfolk 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 01553
Where is area code 01553?
01553 is Ofcom's Kings Lynn numbering area, in Norfolk, East of England England. Its exchange town is in Norfolk. From abroad, drop the 0 and dial +44 1553.
Do I need to dial 01553 for a local call?
Traditionally not from another 01553 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01553 first always works, and mobiles always need it.
How are 01553 numbers written?
Numbers on 01553 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01553 234 567. From abroad the leading zero is dropped: +44 1553 then the local number.
What was the 01553 area code before?
01553 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 0553. Old signage or stationery showing 0553 refers to the same King's Lynn numbers.
Which phone companies hold 01553 numbers?
Ofcom lists 97 providers with allocated blocks on 01553. The largest are BT with 16 of the 147 allocated blocks, GCI Network Solutions Limited with 11 of the 147 allocated blocks and Vodafone with 8 of the 147 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 01553?
By distance between exchange towns, the nearest other codes are 01366 Downham Market (17 km), 01945 Wisbech (20 km), 01485 Hunstanton (21 km) and 01760 Swaffham (21 km).
How do I report a scam call from a 01553 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.