UK area code
01665 area code — Alnwick
01665 is Ofcom’s Alnwick numbering area, in Northumberland, North East England. 89 phone companies hold its 117 allocated number blocks. Its numbers are written like 01665 234 567. The nearest other codes are 01669 Rothbury (17 km) and 01668 Bamburgh (22 km).
01665 at a glance
- Ofcom area name
- Alnwick
- County
- Northumberland
- Council area
- Northumberland
- Region
- North East England
- Number format
- 01665 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0665)
- Allocated blocks
- 117 of 406 (29%) across 89 providers
- Newest block
- 29 June 2026 (2 in the last 12 months)
Sources: Ofcom numbering data (weekly) and area-code list, Ofcom Numbering Plan, ONS geography.
If a 01665 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.
01665 history and number format
Number format: Numbers on 01665 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01665 234 567.
Before 1995: 01665 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 0665.
Local dialling: Traditionally not from another 01665 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01665 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01665 was allocated on 15 July 1994, and the most recent on 29 June 2026. 2 blocks were allocated in the last 12 months — newly-activated ranges with no call history, which is worth knowing when an unfamiliar 01665 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01665 numbers
Every Ofcom range holder with blocks on 01665, 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 |
|---|---|---|---|---|
| GCI Network Solutions Limited | 11 | 11 | 26 April 2017 | 26 February 2024 |
| BT | 9 | 9 | 15 July 1994 | 16 December 2014 |
| Sky UK Limited | 3 | 3 | 1 July 2013 | 1 June 2023 |
| TalkTalk Communications Limited | 3 | 3 | 20 January 2012 | 12 February 2013 |
| DRD Communications Limited | 2 | 2 | 5 October 2023 | 5 October 2023 |
| Digital Space Group Limited | 2 | 2 | 16 May 2008 | 15 March 2016 |
| Fuse 2 Communications Ltd | 2 | 2 | 3 July 2017 | 22 January 2024 |
| Simwood eSMS Limited | 2 | 2 | 27 April 2012 | 29 June 2026 |
| Vodafone Ltd (C&W) | 2 | 2 | 9 September 2013 | 10 November 2021 |
| Voxbone SA | 2 | 2 | 9 December 2011 | 29 January 2025 |
| (AQ) LIMITED | 1 | 1 | 12 September 2012 | 12 September 2012 |
| 24 Seven Cloud Communications Ltd | 1 | 1 | 13 January 2020 | 13 January 2020 |
| 8x8 Communications UK Limited | 1 | 1 | 5 April 2012 | 5 April 2012 |
| AQL Wholesale Ltd | 1 | 1 | 21 December 2007 | 21 December 2007 |
| Adepteo Limited | 1 | 1 | 6 December 2016 | 6 December 2016 |
| Andrews & Arnold (Numbers) Ltd | 1 | 1 | 27 March 2009 | 27 March 2009 |
| Atomstream Limited | 1 | 1 | 14 May 2010 | 14 May 2010 |
| Barritel Limited | 1 | 1 | 27 June 2007 | 27 June 2007 |
| Belgacom International Carrier Services SA | 1 | 1 | 3 October 2019 | 3 October 2019 |
| Bicom Systems EURL | 1 | 1 | 1 March 2012 | 1 March 2012 |
| Bink Networks Ltd | 1 | 1 | 27 March 2023 | 27 March 2023 |
| CFL Communications Ltd | 1 | 1 | 14 July 2009 | 14 July 2009 |
| Calltracks Limited | 1 | 1 | 22 January 2014 | 22 January 2014 |
| Colt Technology Services | 1 | 1 | 20 June 2016 | 20 June 2016 |
| Content Guru Limited | 1 | 1 | 12 October 2012 | 12 October 2012 |
| Convergence Group (wireless) Networks Limited | 1 | 1 | 21 May 2019 | 21 May 2019 |
| DIDWW Ireland Limited | 1 | 1 | 18 January 2019 | 18 January 2019 |
| Datazero Ltd | 1 | 1 | 3 December 2010 | 3 December 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 |
Showing the 30 largest of 89 holders.
Openreach exchanges at Alnwick
Exchanges Openreach lists at this location in its copper stop-sell programme, with the date new copper orders stop.
- Alnwick NEAWStop sell 04-Jun-24 · Tranche 12
All number blocks on 01665first 200 of 406, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 166500 | Protected | — |
| +44 166501 | Protected | — |
| +44 166502 | Protected | — |
| +44 166503 | Protected | — |
| +44 166504 | Protected | — |
| +44 166505 | Protected | — |
| +44 166506 | Protected | — |
| +44 166507 | Protected | — |
| +44 166508 | Protected | — |
| +44 166509 | Protected | — |
| +44 166510 | Protected | — |
| +44 166511 | Protected | — |
| +44 166512 | Protected | — |
| +44 166513 | Protected | — |
| +44 166514 | Protected | — |
| +44 166515 | Protected | — |
| +44 166516 | Protected | — |
| +44 166517 | Protected | — |
| +44 166518 | Protected | — |
| +44 166519 | Protected | — |
| +44 166520 | Allocated | Nationwide Telephone Assistance Ltd |
| +44 166521 | Allocated | (AQ) LIMITED |
| +44 166522 | Allocated | Net-Work Internet Ltd |
| +44 166523 | Allocated | VoIP-Un Limited |
| +44 166524 | Allocated | Redcentric Solutions Limited |
| +44 166525 | Allocated | AQL Wholesale Ltd |
| +44 1665260 | Protected | — |
| +44 1665261 | Protected | — |
| +44 1665262 | Protected | — |
| +44 1665263 | Protected | — |
| +44 1665264 | Protected | — |
| +44 1665265 | Protected | — |
| +44 1665266 | Protected | — |
| +44 1665267 | Allocated | Digital Space Group Limited |
| +44 1665268 | Protected | — |
| +44 1665269 | Protected | — |
| +44 166527 | Allocated | Lumen Technologies UK Limited |
| +44 166528 | Allocated | Telecom2 Limited |
| +44 166529 | Allocated | Digital Space Group Limited |
| +44 166530 | Allocated | Nodemax Limited |
| +44 166531 | Protected | — |
| +44 1665320 | Allocated | Voxbone SA |
| +44 1665321 | Protected | — |
| +44 1665322 | Protected | — |
| +44 1665323 | Protected | — |
| +44 1665324 | Protected | — |
| +44 1665325 | Protected | — |
| +44 1665326 | Protected | — |
| +44 1665327 | Protected | — |
| +44 1665328 | Protected | — |
| +44 1665329 | Protected | — |
| +44 166533 | Protected | — |
| +44 166534 | Allocated | Served Up Limited |
| +44 166535 | Allocated | Solutios Limited |
| +44 166536 | Allocated | Mars Communications Limited |
| +44 166537 | Allocated | Simwood eSMS Limited |
| +44 166538 | Allocated | Andrews & Arnold (Numbers) Ltd |
| +44 166539 | Allocated | Telecoms World Direct Limited |
| +44 166540 | Allocated | Invade International Ltd |
| +44 166541 | Quarantined | — |
| +44 166542 | Allocated | Nexus Telecommunications Limited |
| +44 166543 | Protected | — |
| +44 166544 | Allocated | CFL Communications Ltd |
| +44 166545 | Protected | — |
| +44 1665460 | Allocated | Digitech Solutions Global Limited |
| +44 1665461 | Allocated | Calltracks Limited |
| +44 1665462 | Allocated | Datazero Ltd |
| +44 1665463 | Allocated | VoiceHost Limited |
| +44 1665464 | Allocated | Suretec Systems Ltd |
| +44 1665465 | Allocated | Telappliant Limited |
| +44 1665466 | Allocated | Atomstream Limited |
| +44 1665467 | Allocated | Telephone Box Limited |
| +44 1665468 | Allocated | Windsor Telecom Limited |
| +44 1665469 | Protected | — |
| +44 1665470 | Allocated | Phone Co-Op Numbering Limited |
| +44 1665471 | Protected | — |
| +44 1665472 | Allocated | Invosys Limited |
| +44 1665473 | Allocated | Nexbridge Communications Limited |
| +44 1665474 | Protected | — |
| +44 1665475 | Allocated | TalkTalk Communications Limited |
| +44 1665476 | Protected | — |
| +44 1665477 | Allocated | INTELLIGENT EXCHANGES LIMITED |
| +44 1665478 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1665479 | Allocated | Sky UK Limited |
| +44 1665480 | Allocated | Hello Telecom (UK) Limited |
| +44 1665481 | Allocated | Internexus Networks Limited |
| +44 1665482 | Allocated | Bicom Systems EURL |
| +44 1665483 | Allocated | 8x8 Communications UK Limited |
| +44 1665484 | Allocated | Orbtalk Limited |
| +44 1665485 | Allocated | ICC Networks Ltd |
| +44 1665486 | Allocated | Simwood eSMS Limited |
| +44 1665487 | Allocated | Invoco Ltd |
| +44 1665488 | Protected | — |
| +44 1665489 | Allocated | Ziron Limited |
| +44 1665490 | Allocated | Content Guru Limited |
| +44 1665491 | Allocated | IOVOX Limited |
| +44 1665492 | Allocated | Minotaur Telecom Limited |
| +44 1665493 | Allocated | Media Hawk Ltd |
| +44 1665494 | Allocated | Kalnet4U Ltd |
| +44 1665495 | Allocated | Nuso Cloud UK Limited |
| +44 1665496 | Allocated | Redwood Technologies Ltd |
| +44 1665497 | Allocated | BT |
| +44 1665498 | Allocated | XoverX Ltd |
| +44 1665499 | Protected | — |
| +44 166550 | Allocated | TelNG Limited |
| +44 166551 | Allocated | BT |
| +44 1665520 | Allocated | Linear Telecoms Limited |
| +44 1665521 | Allocated | Adepteo Limited |
| +44 1665522 | Allocated | Sky UK Limited |
| +44 1665523 | Allocated | Number Services Ltd. |
| +44 1665524 | Allocated | EVE CONNECT LTD |
| +44 1665525 | Allocated | Colt Technology Services |
| +44 1665526 | Allocated | Fuse 2 Communications Ltd |
| +44 1665527 | Protected | — |
| +44 1665528 | Allocated | 24 Seven Cloud Communications Ltd |
| +44 1665529 | Allocated | DIDWW Ireland Limited |
| +44 1665530 | Protected | — |
| +44 1665531 | Protected | — |
| +44 1665532 | Protected | — |
| +44 1665533 | Protected | — |
| +44 1665534 | Protected | — |
| +44 1665535 | Protected | — |
| +44 1665536 | Protected | — |
| +44 1665537 | Protected | — |
| +44 1665538 | Protected | — |
| +44 1665539 | Allocated | Vodafone Ltd (C&W) |
| +44 166554 | Allocated | TTNC Limited |
| +44 166555 | Allocated | GCI Network Solutions Limited |
| +44 166556 | Allocated | Magrathea Telecommunications Limited |
| +44 166557 | Allocated | BT |
| +44 166558 | Allocated | BT |
| +44 166559 | Allocated | Localphone Limited |
| +44 166560 | Allocated | BT |
| +44 166561 | Allocated | Voiceflex Limited |
| +44 166562 | Allocated | BT |
| +44 166563 | Allocated | Vodafone Ltd (C&W) |
| +44 1665640 | Protected | — |
| +44 1665641 | Protected | — |
| +44 1665642 | Protected | — |
| +44 1665643 | Protected | — |
| +44 1665644 | Protected | — |
| +44 1665645 | Protected | — |
| +44 1665646 | Protected | — |
| +44 1665647 | Protected | — |
| +44 1665648 | Protected | — |
| +44 1665649 | Protected | — |
| +44 1665650 | Allocated | DRD Communications Limited |
| +44 1665651 | Protected | — |
| +44 1665652 | Protected | — |
| +44 1665653 | Protected | — |
| +44 1665654 | Protected | — |
| +44 1665655 | Protected | — |
| +44 1665656 | Allocated | DRD Communications Limited |
| +44 1665657 | Protected | — |
| +44 1665658 | Protected | — |
| +44 1665659 | Protected | — |
| +44 166566 | Allocated | Gamma Telecom Holdings Limited |
| +44 1665670 | Allocated | Dial 9 Communications Limited |
| +44 1665671 | Allocated | Mi Telecom Limited |
| +44 1665672 | Free | — |
| +44 1665673 | Free | — |
| +44 1665674 | Free | — |
| +44 1665675 | Allocated | Voxbone SA |
| +44 1665676 | Allocated | VOXYONDER NETWORK SERVICES UK LTD |
| +44 1665677 | Allocated | Virgin Media Limited |
| +44 1665678 | Allocated | KCOM Group Ltd |
| +44 1665679 | Free | — |
| +44 166568 | Protected | — |
| +44 166569 | Protected | — |
| +44 166570 | Allocated | Flextel Limited |
| +44 166571 | Allocated | BT |
| +44 166572 | Allocated | BT |
| +44 1665730 | Protected | — |
| +44 1665731 | Protected | — |
| +44 1665732 | Protected | — |
| +44 1665733 | Protected | — |
| +44 1665734 | Allocated | Six Degrees Technology Group Limited |
| +44 1665735 | Protected | — |
| +44 1665736 | Protected | — |
| +44 1665737 | Protected | — |
| +44 1665738 | Protected | — |
| +44 1665739 | Protected | — |
| +44 166574 | Allocated | Barritel Limited |
| +44 1665750 | Allocated | GCI Network Solutions Limited |
| +44 1665751 | Allocated | GCI Network Solutions Limited |
| +44 1665752 | Allocated | GCI Network Solutions Limited |
| +44 1665753 | Allocated | GCI Network Solutions Limited |
| +44 1665754 | Allocated | GCI Network Solutions Limited |
| +44 1665755 | Allocated | GCI Network Solutions Limited |
| +44 1665756 | Allocated | GCI Network Solutions Limited |
| +44 1665757 | Allocated | GCI Network Solutions Limited |
| +44 1665758 | Allocated | GCI Network Solutions Limited |
| +44 1665759 | Allocated | GCI Network Solutions Limited |
| +44 1665760 | Allocated | Sky UK Limited |
| +44 1665761 | Allocated | SiPalto Ltd |
| +44 1665762 | Free | — |
| +44 1665763 | Free | — |
| +44 1665764 | Free | — |
| +44 1665765 | Allocated | ICUK Computing Services Limited |
| +44 1665766 | Allocated | Bink Networks Ltd |
Related lookups
- 01669 Rothbury17 km away
- 01668 Bamburgh22 km away
- 01670 Morpeth27 km away
- 01830 Kirkwhelpington34 km away
- GCI Network Solutions Limited11 allocated blocks on 01665
- BT9 allocated blocks on 01665
- Sky UK Limited3 allocated blocks on 01665
- All UK towns A–ZDialling codes by town
- More Northumberland 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 01665
Where is area code 01665?
01665 is Ofcom's Alnwick numbering area, in Northumberland, North East England. Its exchange town is in Northumberland. From abroad, drop the 0 and dial +44 1665.
Do I need to dial 01665 for a local call?
Traditionally not from another 01665 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01665 first always works, and mobiles always need it.
How are 01665 numbers written?
Numbers on 01665 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01665 234 567. From abroad the leading zero is dropped: +44 1665 then the local number.
What was the 01665 area code before?
01665 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 0665. Old signage or stationery showing 0665 refers to the same Alnwick numbers.
Which phone companies hold 01665 numbers?
Ofcom lists 89 providers with allocated blocks on 01665. The largest are GCI Network Solutions Limited with 11 of the 117 allocated blocks, BT with 9 of the 117 allocated blocks and Sky UK Limited with 3 of the 117 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 01665?
By distance between exchange towns, the nearest other codes are 01669 Rothbury (17 km), 01668 Bamburgh (22 km), 01670 Morpeth (27 km) and 01830 Kirkwhelpington (34 km).
How do I report a scam call from a 01665 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.