UK area code
01766 area code — Porthmadog
01766 is Ofcom’s Porthmadog numbering area, in Gwynedd, Wales. 84 phone companies hold its 108 allocated number blocks. Its numbers are written like 01766 234 567. The nearest other codes are 01758 Pwllheli (20 km) and 01341 Barmouth (23 km).
01766 at a glance
- Ofcom area name
- Porthmadog
- Council area
- Gwynedd
- Country
- Wales
- Number format
- 01766 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0766)
- Allocated blocks
- 108 of 406 (27%) across 84 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 01766 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.
01766 history and number format
Number format: Numbers on 01766 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01766 234 567.
Before 1995: 01766 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 0766.
Local dialling: Traditionally not from another 01766 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01766 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01766 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 01766 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01766 numbers
Every Ofcom range holder with blocks on 01766, 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 | 13 | 13 | 15 July 1994 | 22 July 2020 |
| Gamma Telecom Holdings Limited | 7 | 7 | 8 February 2013 | 8 February 2013 |
| Digital Space Group Limited | 2 | 2 | 20 May 2008 | 15 March 2016 |
| Fuse 2 Communications Ltd | 2 | 2 | 4 July 2017 | 22 January 2024 |
| GCI Network Solutions Limited | 2 | 2 | 2 May 2017 | 20 December 2023 |
| Lumen Technologies UK Limited | 2 | 2 | 17 July 2006 | 17 July 2006 |
| Sky UK Limited | 2 | 2 | 21 June 2013 | 9 January 2025 |
| TalkTalk Communications Limited | 2 | 2 | 20 January 2012 | 20 January 2012 |
| (AQ) LIMITED | 1 | 1 | 26 September 2012 | 26 September 2012 |
| 24 Seven Cloud Communications Ltd | 1 | 1 | 21 January 2020 | 21 January 2020 |
| 8x8 Communications UK Limited | 1 | 1 | 10 April 2012 | 10 April 2012 |
| AQL Wholesale Ltd | 1 | 1 | 27 December 2007 | 27 December 2007 |
| Adepteo Limited | 1 | 1 | 6 December 2016 | 6 December 2016 |
| Andrews & Arnold (Numbers) Ltd | 1 | 1 | 2 April 2009 | 2 April 2009 |
| Atomstream Limited | 1 | 1 | 14 May 2010 | 14 May 2010 |
| Barritel Limited | 1 | 1 | 12 June 2007 | 12 June 2007 |
| Belgacom International Carrier Services SA | 1 | 1 | 17 November 2020 | 17 November 2020 |
| Bicom Systems EURL | 1 | 1 | 1 March 2012 | 1 March 2012 |
| Bink Networks Ltd | 1 | 1 | 11 April 2023 | 11 April 2023 |
| CFL Communications Ltd | 1 | 1 | 17 July 2009 | 17 July 2009 |
| Colt Technology Services | 1 | 1 | 4 July 2016 | 4 July 2016 |
| Content Guru Limited | 1 | 1 | 11 October 2012 | 11 October 2012 |
| Convergence Group (wireless) Networks Limited | 1 | 1 | 21 May 2019 | 21 May 2019 |
| DIDWW Ireland Limited | 1 | 1 | 27 January 2020 | 27 January 2020 |
| Datazero Ltd | 1 | 1 | 3 December 2010 | 3 December 2010 |
| Dial 9 Communications Limited | 1 | 1 | 8 January 2020 | 8 January 2020 |
| Digitech Solutions Global Limited | 1 | 1 | 26 June 2012 | 26 June 2012 |
| EVE CONNECT LTD | 1 | 1 | 20 June 2022 | 20 June 2022 |
| Flextel Limited | 1 | 1 | 11 November 2005 | 11 November 2005 |
| Hello Telecom (UK) Limited | 1 | 1 | 13 December 2011 | 13 December 2011 |
Showing the 30 largest of 84 holders.
Openreach exchanges at Porthmadog
Exchanges Openreach lists at this location in its copper stop-sell programme, with the date new copper orders stop.
- Porthmadog WNPORStop sell 16-Feb-24 · Tranche 11
All number blocks on 01766first 200 of 406, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 176600 | Protected | — |
| +44 176601 | Protected | — |
| +44 176602 | Protected | — |
| +44 176603 | Protected | — |
| +44 176604 | Protected | — |
| +44 176605 | Protected | — |
| +44 176606 | Protected | — |
| +44 176607 | Protected | — |
| +44 176608 | Protected | — |
| +44 176609 | Protected | — |
| +44 176610 | Protected | — |
| +44 176611 | Protected | — |
| +44 176612 | Protected | — |
| +44 176613 | Protected | — |
| +44 176614 | Protected | — |
| +44 176615 | Protected | — |
| +44 176616 | Protected | — |
| +44 176617 | Protected | — |
| +44 176618 | Protected | — |
| +44 176619 | Protected | — |
| +44 176620 | Allocated | Voiceflex Limited |
| +44 176621 | Allocated | (AQ) LIMITED |
| +44 176622 | Allocated | Barritel Limited |
| +44 1766230 | Protected | — |
| +44 1766231 | Protected | — |
| +44 1766232 | Protected | — |
| +44 1766233 | Protected | — |
| +44 1766234 | Protected | — |
| +44 1766235 | Protected | — |
| +44 1766236 | Protected | — |
| +44 1766237 | Protected | — |
| +44 1766238 | Allocated | TalkTalk Communications Limited |
| +44 1766239 | Allocated | TalkTalk Communications Limited |
| +44 176624 | Allocated | AQL Wholesale Ltd |
| +44 176625 | Allocated | VoIP-Un Limited |
| +44 176626 | Protected | — |
| +44 1766270 | Protected | — |
| +44 1766271 | Protected | — |
| +44 1766272 | Protected | — |
| +44 1766273 | Protected | — |
| +44 1766274 | Protected | — |
| +44 1766275 | Protected | — |
| +44 1766276 | Protected | — |
| +44 1766277 | Allocated | Digital Space Group Limited |
| +44 1766278 | Protected | — |
| +44 1766279 | Protected | — |
| +44 176628 | Allocated | Redcentric Solutions Limited |
| +44 176629 | Allocated | Nationwide Telephone Assistance Ltd |
| +44 176630 | Allocated | Telecom2 Limited |
| +44 176631 | Allocated | Nodemax Limited |
| +44 176632 | Allocated | Digital Space Group Limited |
| +44 176633 | Allocated | Net-Work Internet Ltd |
| +44 1766340 | Allocated | Voxbone SA |
| +44 1766341 | Protected | — |
| +44 1766342 | Protected | — |
| +44 1766343 | Protected | — |
| +44 1766344 | Protected | — |
| +44 1766345 | Protected | — |
| +44 1766346 | Protected | — |
| +44 1766347 | Protected | — |
| +44 1766348 | Protected | — |
| +44 1766349 | Protected | — |
| +44 176635 | Protected | — |
| +44 176636 | Allocated | Served Up Limited |
| +44 176637 | Allocated | Solutios Limited |
| +44 176638 | Quarantined | — |
| +44 176639 | Allocated | Mars Communications Limited |
| +44 176640 | Protected | — |
| +44 176641 | Allocated | Andrews & Arnold (Numbers) Ltd |
| +44 176642 | Allocated | Telecoms World Limited |
| +44 176643 | Quarantined | — |
| +44 176644 | Allocated | Nexus Telecommunications Limited |
| +44 176645 | Allocated | CFL Communications Ltd |
| +44 176646 | Allocated | BT |
| +44 176647 | Protected | — |
| +44 1766480 | Allocated | Convergence Group (wireless) Networks Limited |
| +44 1766481 | Allocated | VoiceHost Limited |
| +44 1766482 | Allocated | GCI Network Solutions Limited |
| +44 1766483 | Allocated | Telephone Box Limited |
| +44 1766484 | Allocated | Suretec Systems Ltd |
| +44 1766485 | Allocated | Datazero Ltd |
| +44 1766486 | Allocated | Windsor Telecom Limited |
| +44 1766487 | Allocated | Atomstream Limited |
| +44 1766488 | Allocated | TGL Services (UK) Ltd |
| +44 1766489 | Protected | — |
| +44 1766490 | Allocated | Phone Co-Op Numbering Limited |
| +44 1766491 | Protected | — |
| +44 1766492 | Allocated | INTELLIGENT EXCHANGES LIMITED |
| +44 1766493 | Allocated | Nexbridge Communications Limited |
| +44 1766494 | Allocated | Invosys Limited |
| +44 1766495 | Protected | — |
| +44 1766496 | Allocated | Sky UK Limited |
| +44 1766497 | Allocated | Adepteo Limited |
| +44 1766498 | Protected | — |
| +44 1766499 | Allocated | YayYay Limited |
| +44 1766500 | Allocated | Linear Telecoms Limited |
| +44 1766501 | Allocated | Number Services Ltd. |
| +44 1766502 | Allocated | Orbtalk Limited |
| +44 1766503 | Allocated | Zapappi Ltd |
| +44 1766504 | Protected | — |
| +44 1766505 | Protected | — |
| +44 1766506 | Allocated | Colt Technology Services |
| +44 1766507 | Allocated | I.T Communications Limited |
| +44 1766508 | Allocated | 24 Seven Cloud Communications Ltd |
| +44 1766509 | Allocated | IP Voice Networks Ltd |
| +44 176651 | Allocated | BT |
| +44 176652 | Allocated | BT |
| +44 176653 | Allocated | BT |
| +44 176654 | Allocated | BT |
| +44 176655 | Allocated | GCI Network Solutions Limited |
| +44 176656 | Allocated | Vodafone Ltd (C&W) |
| +44 176657 | Allocated | Syntec Limited |
| +44 1766580 | Protected | — |
| +44 1766581 | Protected | — |
| +44 1766582 | Protected | — |
| +44 1766583 | Protected | — |
| +44 1766584 | Allocated | Lumen Technologies UK Limited |
| +44 1766585 | Protected | — |
| +44 1766586 | Protected | — |
| +44 1766587 | Protected | — |
| +44 1766588 | Protected | — |
| +44 1766589 | Allocated | Lumen Technologies UK Limited |
| +44 176659 | Allocated | BT |
| +44 1766600 | Allocated | Internexus Networks Limited |
| +44 1766601 | Allocated | Hello Telecom (UK) Limited |
| +44 1766602 | Allocated | Simwood eSMS Limited |
| +44 1766603 | Allocated | Bicom Systems EURL |
| +44 1766604 | Allocated | 8x8 Communications UK Limited |
| +44 1766605 | Allocated | ICC Networks Ltd |
| +44 1766606 | Protected | — |
| +44 1766607 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1766608 | Allocated | Invoco Ltd |
| +44 1766609 | Allocated | IOVOX Limited |
| +44 1766610 | Allocated | Ziron Limited |
| +44 1766611 | Protected | — |
| +44 1766612 | Allocated | Kalnet4U Ltd |
| +44 1766613 | Allocated | Redwood Technologies Ltd |
| +44 1766614 | Allocated | EVE CONNECT LTD |
| +44 1766615 | Allocated | Minotaur Telecom Limited |
| +44 1766616 | Allocated | Content Guru Limited |
| +44 1766617 | Allocated | Fuse 2 Communications Ltd |
| +44 1766618 | Allocated | Fuse 2 Communications Ltd |
| +44 1766619 | Allocated | XoverX Ltd |
| +44 1766620 | Allocated | Dial 9 Communications Limited |
| +44 1766621 | Allocated | DIDWW Ireland Limited |
| +44 1766622 | Allocated | Mi Telecom Limited |
| +44 1766623 | Allocated | BT |
| +44 1766624 | Allocated | Media Hawk Ltd |
| +44 1766625 | Allocated | Bink Networks Ltd |
| +44 1766626 | Allocated | ICUK Computing Services Limited |
| +44 1766627 | Free | — |
| +44 1766628 | Allocated | Belgacom International Carrier Services SA |
| +44 1766629 | Allocated | Sky UK Limited |
| +44 1766630 | Allocated | KCOM Group Ltd |
| +44 1766631 | Free | — |
| +44 1766632 | Free | — |
| +44 1766633 | Allocated | SiPalto Ltd |
| +44 1766634 | Free | — |
| +44 1766635 | Free | — |
| +44 1766636 | Allocated | VOXYONDER NETWORK SERVICES UK LTD |
| +44 1766637 | Free | — |
| +44 1766638 | Protected | — |
| +44 1766639 | Protected | — |
| +44 1766640 | Protected | — |
| +44 1766641 | Protected | — |
| +44 1766642 | Protected | — |
| +44 1766643 | Protected | — |
| +44 1766644 | Protected | — |
| +44 1766645 | Protected | — |
| +44 1766646 | Protected | — |
| +44 1766647 | Protected | — |
| +44 1766648 | Protected | — |
| +44 1766649 | Protected | — |
| +44 1766650 | Protected | — |
| +44 1766651 | Protected | — |
| +44 1766652 | Protected | — |
| +44 1766653 | Protected | — |
| +44 1766654 | Protected | — |
| +44 1766655 | Protected | — |
| +44 1766656 | Protected | — |
| +44 1766657 | Protected | — |
| +44 1766658 | Protected | — |
| +44 1766659 | Protected | — |
| +44 1766660 | Protected | — |
| +44 1766661 | Protected | — |
| +44 1766662 | Protected | — |
| +44 1766663 | Protected | — |
| +44 1766664 | Protected | — |
| +44 1766665 | Protected | — |
| +44 1766666 | Protected | — |
| +44 1766667 | Protected | — |
| +44 1766668 | Protected | — |
| +44 1766669 | Protected | — |
| +44 1766670 | Protected | — |
| +44 1766671 | Protected | — |
| +44 1766672 | Protected | — |
| +44 1766673 | Protected | — |
| +44 1766674 | Protected | — |
| +44 1766675 | Protected | — |
| +44 1766676 | Protected | — |
Related lookups
- 01758 Pwllheli20 km away
- 01341 Barmouth23 km away
- 01286 Caernarfon26 km away
- 01690 Betws-y-Coed29 km away
- BT13 allocated blocks on 01766
- Gamma Telecom Holdings Limited7 allocated blocks on 01766
- Digital Space Group Limited2 allocated blocks on 01766
- All UK towns A–ZDialling codes by town
- More Wales 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 01766
Where is area code 01766?
01766 is Ofcom's Porthmadog numbering area, in Gwynedd, Wales. Its exchange town is in Gwynedd. From abroad, drop the 0 and dial +44 1766.
Do I need to dial 01766 for a local call?
Traditionally not from another 01766 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01766 first always works, and mobiles always need it.
How are 01766 numbers written?
Numbers on 01766 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01766 234 567. From abroad the leading zero is dropped: +44 1766 then the local number.
What was the 01766 area code before?
01766 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 0766. Old signage or stationery showing 0766 refers to the same Porthmadog numbers.
Which phone companies hold 01766 numbers?
Ofcom lists 84 providers with allocated blocks on 01766. The largest are BT with 13 of the 108 allocated blocks, Gamma Telecom Holdings Limited with 7 of the 108 allocated blocks and Digital Space Group Limited with 2 of the 108 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 01766?
By distance between exchange towns, the nearest other codes are 01758 Pwllheli (20 km), 01341 Barmouth (23 km), 01286 Caernarfon (26 km) and 01690 Betws-y-Coed (29 km).
How do I report a scam call from a 01766 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.