UK area code
01646 area code — Milford Haven
01646 is Ofcom’s Milford Haven numbering area, in Pembrokeshire, Wales. 89 phone companies hold its 108 allocated number blocks. Its numbers are written like 01646 234 567. The nearest other codes are 01834 Narberth (22 km) and 01437 Haverfordwest (25 km).
01646 at a glance
- Ofcom area name
- Milford Haven
- Council area
- Pembrokeshire
- Country
- Wales
- Number format
- 01646 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0646)
- Allocated blocks
- 108 of 388 (28%) across 89 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 01646 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.
01646 history and number format
Number format: Numbers on 01646 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01646 234 567.
Before 1995: 01646 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 0646.
Local dialling: Traditionally not from another 01646 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01646 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01646 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 01646 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01646 numbers
Every Ofcom range holder with blocks on 01646, 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 | 12 | 12 | 15 July 1994 | 20 March 2024 |
| TalkTalk Communications Limited | 4 | 4 | 20 January 2012 | 10 November 2014 |
| Sky UK Limited | 3 | 3 | 1 July 2013 | 3 July 2018 |
| Bink Networks Ltd | 2 | 2 | 15 September 2022 | 11 April 2023 |
| GCI Network Solutions Limited | 2 | 2 | 2 May 2017 | 22 December 2023 |
| Lumen Technologies UK Limited | 2 | 2 | 17 July 2006 | 17 July 2006 |
| (AQ) LIMITED | 1 | 1 | 12 September 2012 | 12 September 2012 |
| 24 Seven Cloud Communications Ltd | 1 | 1 | 17 January 2020 | 17 January 2020 |
| 8x8 Communications UK Limited | 1 | 1 | 5 April 2012 | 5 April 2012 |
| AQL Wholesale Ltd | 1 | 1 | 1 November 2004 | 1 November 2004 |
| Adepteo Limited | 1 | 1 | 6 December 2016 | 6 December 2016 |
| Alnitak GmbH | 1 | 1 | 6 April 2016 | 6 April 2016 |
| Andrews & Arnold (Numbers) Ltd | 1 | 1 | 27 March 2009 | 27 March 2009 |
| Atomstream Limited | 1 | 1 | 11 May 2010 | 11 May 2010 |
| Barritel Limited | 1 | 1 | 22 June 2007 | 22 June 2007 |
| Belgacom International Carrier Services SA | 1 | 1 | 10 November 2020 | 10 November 2020 |
| Bicom Systems EURL | 1 | 1 | 1 March 2012 | 1 March 2012 |
| CFL Communications Ltd | 1 | 1 | 14 July 2009 | 14 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 |
| 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 | 15 November 2010 | 15 November 2010 |
| Dial 9 Communications Limited | 1 | 1 | 13 January 2020 | 13 January 2020 |
| Digital Space Group Limited | 1 | 1 | 16 May 2008 | 16 May 2008 |
| Digitech Solutions Global Limited | 1 | 1 | 27 April 2010 | 27 April 2010 |
| EVE CONNECT LTD | 1 | 1 | 24 June 2022 | 24 June 2022 |
| Flextel Limited | 1 | 1 | 21 October 2005 | 21 October 2005 |
| Fuse 2 Communications Ltd | 1 | 1 | 3 July 2017 | 3 July 2017 |
Showing the 30 largest of 89 holders.
All number blocks on 01646first 200 of 388, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 164600 | Protected | — |
| +44 164601 | Protected | — |
| +44 164602 | Protected | — |
| +44 164603 | Protected | — |
| +44 164604 | Protected | — |
| +44 164605 | Protected | — |
| +44 164606 | Protected | — |
| +44 164607 | Protected | — |
| +44 164608 | Protected | — |
| +44 164609 | Protected | — |
| +44 164610 | Protected | — |
| +44 164611 | Protected | — |
| +44 164612 | Protected | — |
| +44 164613 | Protected | — |
| +44 164614 | Protected | — |
| +44 164615 | Protected | — |
| +44 164616 | Protected | — |
| +44 164617 | Protected | — |
| +44 164618 | Protected | — |
| +44 164619 | Protected | — |
| +44 164620 | Allocated | TTNC Limited |
| +44 1646210 | Allocated | Number Services Ltd. |
| +44 1646211 | Protected | — |
| +44 1646212 | Protected | — |
| +44 1646213 | Allocated | Adepteo Limited |
| +44 1646214 | Allocated | IP Voice Networks Ltd |
| +44 1646215 | Allocated | Zapappi Ltd |
| +44 1646216 | Allocated | Colt Technology Services |
| +44 1646217 | Allocated | Sky UK Limited |
| +44 1646218 | Allocated | EVE CONNECT LTD |
| +44 1646219 | Allocated | Fuse 2 Communications Ltd |
| +44 164622 | Allocated | TelNG Limited |
| +44 164623 | Allocated | Voiceflex Limited |
| +44 164624 | Allocated | Barritel Limited |
| +44 164625 | Protected | — |
| +44 164626 | Allocated | Localphone Limited |
| +44 1646270 | Protected | — |
| +44 1646271 | Protected | — |
| +44 1646272 | Protected | — |
| +44 1646273 | Protected | — |
| +44 1646274 | Protected | — |
| +44 1646275 | Protected | — |
| +44 1646276 | Protected | — |
| +44 1646277 | Protected | — |
| +44 1646278 | Allocated | TalkTalk Communications Limited |
| +44 1646279 | Allocated | TalkTalk Communications Limited |
| +44 164628 | Allocated | (AQ) LIMITED |
| +44 164629 | Allocated | Nationwide Telephone Assistance Ltd |
| +44 164630 | Allocated | Net-Work Internet Ltd |
| +44 164631 | Allocated | VoIP-Un Limited |
| +44 164632 | Allocated | Redcentric Solutions Limited |
| +44 164633 | Allocated | Nodemax Limited |
| +44 164634 | Allocated | Telecom2 Limited |
| +44 164635 | Allocated | Digital Space Group Limited |
| +44 164636 | Protected | — |
| +44 1646370 | Allocated | Voxbone SA |
| +44 1646371 | Protected | — |
| +44 1646372 | Protected | — |
| +44 1646373 | Protected | — |
| +44 1646374 | Protected | — |
| +44 1646375 | Protected | — |
| +44 1646376 | Protected | — |
| +44 1646377 | Protected | — |
| +44 1646378 | Protected | — |
| +44 1646379 | Protected | — |
| +44 164638 | Protected | — |
| +44 164639 | Allocated | Served Up Limited |
| +44 164640 | Allocated | Gamma Telecom Holdings Limited |
| +44 1646410 | Allocated | Linear Telecoms Limited |
| +44 1646411 | Allocated | Hello Telecom (UK) Limited |
| +44 1646412 | Allocated | Internexus Networks Limited |
| +44 1646413 | Allocated | Invoco Ltd |
| +44 1646414 | Protected | — |
| +44 1646415 | Allocated | Bicom Systems EURL |
| +44 1646416 | Allocated | 8x8 Communications UK Limited |
| +44 1646417 | Allocated | ICC Networks Ltd |
| +44 1646418 | Allocated | IOVOX Limited |
| +44 1646419 | Allocated | Ziron Limited |
| +44 164642 | Allocated | Vodafone Ltd (C&W) |
| +44 164643 | Protected | — |
| +44 164644 | Allocated | GCI Network Solutions Limited |
| +44 164645 | Allocated | AQL Wholesale Ltd |
| +44 164646 | Allocated | Magrathea Telecommunications Limited |
| +44 1646470 | Allocated | Dial 9 Communications Limited |
| +44 1646471 | Allocated | 24 Seven Cloud Communications Ltd |
| +44 1646472 | Allocated | Bink Networks Ltd |
| +44 1646473 | Allocated | DIDWW Ireland Limited |
| +44 1646474 | Allocated | SiPalto Ltd |
| +44 1646475 | Allocated | VOXYONDER NETWORK SERVICES UK LTD |
| +44 1646476 | Allocated | BT |
| +44 1646477 | Allocated | ICUK Computing Services Limited |
| +44 1646478 | Allocated | Lanonyx Telecom Limited |
| +44 1646479 | Free | — |
| +44 164648 | Allocated | BT |
| +44 164649 | Protected | — |
| +44 1646500 | Protected | — |
| +44 1646501 | Protected | — |
| +44 1646502 | Protected | — |
| +44 1646503 | Protected | — |
| +44 1646504 | Protected | — |
| +44 1646505 | Protected | — |
| +44 1646506 | Protected | — |
| +44 1646507 | Protected | — |
| +44 1646508 | Protected | — |
| +44 1646509 | Protected | — |
| +44 164651 | Allocated | TGL Services (UK) Ltd |
| +44 1646520 | Free | — |
| +44 1646521 | Free | — |
| +44 1646522 | Free | — |
| +44 1646523 | Free | — |
| +44 1646524 | Free | — |
| +44 1646525 | Protected | — |
| +44 1646526 | Protected | — |
| +44 1646527 | Protected | — |
| +44 1646528 | Protected | — |
| +44 1646529 | Protected | — |
| +44 1646530 | Protected | — |
| +44 1646531 | Protected | — |
| +44 1646532 | Protected | — |
| +44 1646533 | Protected | — |
| +44 1646534 | Protected | — |
| +44 1646535 | Protected | — |
| +44 1646536 | Protected | — |
| +44 1646537 | Protected | — |
| +44 1646538 | Protected | — |
| +44 1646539 | Protected | — |
| +44 1646540 | Protected | — |
| +44 1646541 | Protected | — |
| +44 1646542 | Protected | — |
| +44 1646543 | Protected | — |
| +44 1646544 | Protected | — |
| +44 1646545 | Protected | — |
| +44 1646546 | Protected | — |
| +44 1646547 | Protected | — |
| +44 1646548 | Protected | — |
| +44 1646549 | Protected | — |
| +44 164655 | Protected | — |
| +44 1646560 | Allocated | TalkTalk Communications Limited |
| +44 1646561 | Protected | — |
| +44 1646562 | Allocated | Sky UK Limited |
| +44 1646563 | Allocated | TalkTalk Communications Limited |
| +44 1646564 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1646565 | Protected | — |
| +44 1646566 | Allocated | Mi Telecom Limited |
| +44 1646567 | Allocated | KCOM Group Ltd |
| +44 1646568 | Allocated | Belgacom International Carrier Services SA |
| +44 1646569 | Protected | — |
| +44 1646570 | Protected | — |
| +44 1646571 | Protected | — |
| +44 1646572 | Protected | — |
| +44 1646573 | Protected | — |
| +44 1646574 | Allocated | Six Degrees Technology Group Limited |
| +44 1646575 | Protected | — |
| +44 1646576 | Protected | — |
| +44 1646577 | Protected | — |
| +44 1646578 | Protected | — |
| +44 1646579 | Protected | — |
| +44 1646580 | Protected | — |
| +44 1646581 | Protected | — |
| +44 1646582 | Protected | — |
| +44 1646583 | Protected | — |
| +44 1646584 | Allocated | Lumen Technologies UK Limited |
| +44 1646585 | Protected | — |
| +44 1646586 | Protected | — |
| +44 1646587 | Protected | — |
| +44 1646588 | Protected | — |
| +44 1646589 | Allocated | Lumen Technologies UK Limited |
| +44 1646590 | Protected | — |
| +44 1646591 | Protected | — |
| +44 1646592 | Protected | — |
| +44 1646593 | Protected | — |
| +44 1646594 | Protected | — |
| +44 1646595 | Protected | — |
| +44 1646596 | Protected | — |
| +44 1646597 | Allocated | Spitfire Network Services Limited |
| +44 1646598 | Protected | — |
| +44 1646599 | Protected | — |
| +44 164660 | Allocated | BT |
| +44 164661 | Allocated | Flextel Limited |
| +44 164662 | Allocated | BT |
| +44 164663 | Allocated | BT |
| +44 164664 | Allocated | BT |
| +44 164665 | Allocated | BT |
| +44 164666 | Allocated | BT |
| +44 164667 | Allocated | BT |
| +44 164668 | Allocated | BT |
| +44 164669 | Allocated | BT |
| +44 164670 | Allocated | Solutios Limited |
| +44 164671 | Allocated | Mars Communications Limited |
| +44 164672 | Quarantined | — |
| +44 164673 | Allocated | Andrews & Arnold (Numbers) Ltd |
| +44 164674 | Allocated | Invade International Ltd |
| +44 164675 | Allocated | Telecoms World Direct Limited |
| +44 164676 | Allocated | Nexus Telecommunications Limited |
| +44 164677 | Quarantined | — |
| +44 164678 | Allocated | CFL Communications Ltd |
| +44 1646790 | Allocated | Calltracks Limited |
| +44 1646791 | Allocated | Digitech Solutions Global Limited |
| +44 1646792 | Allocated | VoiceHost Limited |
| +44 1646793 | Allocated | Datazero Ltd |
Related lookups
- 01834 Narberth22 km away
- 01437 Haverfordwest25 km away
- 01348 Fishguard31 km away
- 01994 St Clears39 km away
- BT12 allocated blocks on 01646
- TalkTalk Communications Limited4 allocated blocks on 01646
- Sky UK Limited3 allocated blocks on 01646
- 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 01646
Where is area code 01646?
01646 is Ofcom's Milford Haven numbering area, in Pembrokeshire, Wales. Its exchange town is in Pembrokeshire. From abroad, drop the 0 and dial +44 1646.
Do I need to dial 01646 for a local call?
Traditionally not from another 01646 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01646 first always works, and mobiles always need it.
How are 01646 numbers written?
Numbers on 01646 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01646 234 567. From abroad the leading zero is dropped: +44 1646 then the local number.
What was the 01646 area code before?
01646 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 0646. Old signage or stationery showing 0646 refers to the same Milford Haven numbers.
Which phone companies hold 01646 numbers?
Ofcom lists 89 providers with allocated blocks on 01646. The largest are BT with 12 of the 108 allocated blocks, TalkTalk Communications Limited with 4 of the 108 allocated blocks and Sky UK Limited with 3 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 01646?
By distance between exchange towns, the nearest other codes are 01834 Narberth (22 km), 01437 Haverfordwest (25 km), 01348 Fishguard (31 km) and 01994 St Clears (39 km).
How do I report a scam call from a 01646 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.