UK area code
01591 area code — Llanwrtyd Wells
01591 is Ofcom’s Llanwrtyd Wells numbering area, in Powys, Wales. 77 phone companies hold its 88 allocated number blocks. Its numbers are written like 01591 234 567. The nearest other codes are 01550 Llandovery (16 km) and 01982 Builth Wells (17 km).
01591 at a glance
- Ofcom area name
- Llanwrtyd Wells
- Council area
- Powys
- Country
- Wales
- Number format
- 01591 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0591)
- Allocated blocks
- 88 of 505 (17%) across 77 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 01591 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.
01591 history and number format
Number format: Numbers on 01591 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01591 234 567.
Before 1995: 01591 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 0591.
Local dialling: Traditionally not from another 01591 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01591 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01591 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 01591 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01591 numbers
Every Ofcom range holder with blocks on 01591, 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 |
|---|---|---|---|---|
| Gamma Telecom Holdings Limited | 8 | 8 | 7 February 2013 | 7 February 2013 |
| BT | 2 | 2 | 15 July 1994 | 15 July 1994 |
| Digital Space Group Limited | 2 | 2 | 16 May 2008 | 15 March 2016 |
| Fuse 2 Communications Ltd | 2 | 2 | 3 July 2017 | 22 January 2024 |
| TalkTalk Communications Limited | 2 | 2 | 20 January 2012 | 20 January 2012 |
| (AQ) LIMITED | 1 | 1 | 11 September 2012 | 11 September 2012 |
| 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 | 4 January 2008 | 4 January 2008 |
| Adepteo Limited | 1 | 1 | 6 December 2016 | 6 December 2016 |
| Andrews & Arnold (Numbers) Ltd | 1 | 1 | 23 March 2009 | 23 March 2009 |
| Atomstream Limited | 1 | 1 | 12 May 2010 | 12 May 2010 |
| Barritel Limited | 1 | 1 | 22 June 2007 | 22 June 2007 |
| Bicom Systems EURL | 1 | 1 | 1 March 2012 | 1 March 2012 |
| CFL Communications Ltd | 1 | 1 | 14 July 2009 | 14 July 2009 |
| Colt Technology Services | 1 | 1 | 18 July 2016 | 18 July 2016 |
| Content Guru Limited | 1 | 1 | 29 August 2013 | 29 August 2013 |
| Convergence Group (wireless) Networks Limited | 1 | 1 | 21 May 2019 | 21 May 2019 |
| Datazero Ltd | 1 | 1 | 30 October 2012 | 30 October 2012 |
| 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 | 9 November 2022 | 9 November 2022 |
| Flextel Limited | 1 | 1 | 26 October 2005 | 26 October 2005 |
| GCI Network Solutions Limited | 1 | 1 | 20 December 2023 | 20 December 2023 |
| Hello Telecom (UK) Limited | 1 | 1 | 11 November 2011 | 11 November 2011 |
| I.T Communications Limited | 1 | 1 | 25 April 2017 | 25 April 2017 |
| ICC Networks Ltd | 1 | 1 | 17 April 2012 | 17 April 2012 |
| ICUK Computing Services Limited | 1 | 1 | 17 June 2020 | 17 June 2020 |
| INTELLIGENT EXCHANGES LIMITED | 1 | 1 | 26 January 2026 | 26 January 2026 |
| IOVOX Limited | 1 | 1 | 3 July 2012 | 3 July 2012 |
Showing the 30 largest of 77 holders.
All number blocks on 01591first 200 of 505, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 159100 | Protected | — |
| +44 159101 | Protected | — |
| +44 159102 | Protected | — |
| +44 159103 | Protected | — |
| +44 159104 | Protected | — |
| +44 159105 | Protected | — |
| +44 159106 | Protected | — |
| +44 159107 | Protected | — |
| +44 159108 | Protected | — |
| +44 159109 | Protected | — |
| +44 159110 | Protected | — |
| +44 159111 | Protected | — |
| +44 159112 | Protected | — |
| +44 159113 | Protected | — |
| +44 159114 | Protected | — |
| +44 159115 | Protected | — |
| +44 159116 | Protected | — |
| +44 159117 | Protected | — |
| +44 159118 | Protected | — |
| +44 159119 | Protected | — |
| +44 1591200 | Protected | — |
| +44 1591201 | Protected | — |
| +44 1591202 | Protected | — |
| +44 1591203 | Protected | — |
| +44 1591204 | Allocated | Six Degrees Technology Group Limited |
| +44 1591205 | Protected | — |
| +44 1591206 | Protected | — |
| +44 1591207 | Protected | — |
| +44 1591208 | Protected | — |
| +44 1591209 | Protected | — |
| +44 1591210 | Protected | — |
| +44 1591211 | Allocated | Datazero Ltd |
| +44 1591212 | Allocated | Minotaur Telecom Limited |
| +44 1591213 | Allocated | Kalnet4U Ltd |
| +44 1591214 | Allocated | Redwood Technologies Ltd |
| +44 1591215 | Allocated | Fuse 2 Communications Ltd |
| +44 1591216 | Allocated | Content Guru Limited |
| +44 1591217 | Allocated | Vodafone Ltd (C&W) |
| +44 1591218 | Allocated | Convergence Group (wireless) Networks Limited |
| +44 1591219 | Allocated | XoverX Ltd |
| +44 159122 | Protected | — |
| +44 1591230 | Protected | — |
| +44 1591231 | Protected | — |
| +44 1591232 | Protected | — |
| +44 1591233 | Protected | — |
| +44 1591234 | Protected | — |
| +44 1591235 | Protected | — |
| +44 1591236 | Protected | — |
| +44 1591237 | Protected | — |
| +44 1591238 | Protected | — |
| +44 1591239 | Protected | — |
| +44 1591240 | Protected | — |
| +44 1591241 | Protected | — |
| +44 1591242 | Protected | — |
| +44 1591243 | Protected | — |
| +44 1591244 | Protected | — |
| +44 1591245 | Protected | — |
| +44 1591246 | Protected | — |
| +44 1591247 | Protected | — |
| +44 1591248 | Protected | — |
| +44 1591249 | Protected | — |
| +44 159125 | Allocated | TTNC Limited |
| +44 159126 | Protected | — |
| +44 1591270 | Protected | — |
| +44 1591271 | Protected | — |
| +44 1591272 | Protected | — |
| +44 1591273 | Protected | — |
| +44 1591274 | Protected | — |
| +44 1591275 | Protected | — |
| +44 1591276 | Protected | — |
| +44 1591277 | Allocated | Spitfire Network Services Limited |
| +44 1591278 | Protected | — |
| +44 1591279 | Protected | — |
| +44 1591280 | Protected | — |
| +44 1591281 | Protected | — |
| +44 1591282 | Protected | — |
| +44 1591283 | Protected | — |
| +44 1591284 | Protected | — |
| +44 1591285 | Protected | — |
| +44 1591286 | Protected | — |
| +44 1591287 | Protected | — |
| +44 1591288 | Protected | — |
| +44 1591289 | Protected | — |
| +44 159129 | Allocated | TelNG Limited |
| +44 159130 | Allocated | Barritel Limited |
| +44 159131 | Allocated | Voiceflex Limited |
| +44 159132 | Allocated | (AQ) LIMITED |
| +44 159133 | Protected | — |
| +44 159134 | Allocated | Redcentric Solutions Limited |
| +44 159135 | Allocated | VoIP-Un Limited |
| +44 1591360 | Protected | — |
| +44 1591361 | Protected | — |
| +44 1591362 | Protected | — |
| +44 1591363 | Protected | — |
| +44 1591364 | Protected | — |
| +44 1591365 | Protected | — |
| +44 1591366 | Protected | — |
| +44 1591367 | Protected | — |
| +44 1591368 | Allocated | TalkTalk Communications Limited |
| +44 1591369 | Allocated | TalkTalk Communications Limited |
| +44 159137 | Allocated | AQL Wholesale Ltd |
| +44 1591380 | Protected | — |
| +44 1591381 | Protected | — |
| +44 1591382 | Protected | — |
| +44 1591383 | Protected | — |
| +44 1591384 | Protected | — |
| +44 1591385 | Protected | — |
| +44 1591386 | Protected | — |
| +44 1591387 | Allocated | Digital Space Group Limited |
| +44 1591388 | Protected | — |
| +44 1591389 | Protected | — |
| +44 159139 | Allocated | Localphone Limited |
| +44 159140 | Allocated | Telecom2 Limited |
| +44 159141 | Allocated | Digital Space Group Limited |
| +44 159142 | Allocated | Nodemax Limited |
| +44 159143 | Protected | — |
| +44 159144 | Allocated | Net-Work Internet Ltd |
| +44 159145 | Protected | — |
| +44 1591460 | Allocated | Voxbone SA |
| +44 1591461 | Protected | — |
| +44 1591462 | Protected | — |
| +44 1591463 | Protected | — |
| +44 1591464 | Protected | — |
| +44 1591465 | Protected | — |
| +44 1591466 | Protected | — |
| +44 1591467 | Protected | — |
| +44 1591468 | Protected | — |
| +44 1591469 | Protected | — |
| +44 159147 | Allocated | Served Up Limited |
| +44 159148 | Allocated | Solutios Limited |
| +44 159149 | Allocated | Mars Communications Limited |
| +44 159150 | Quarantined | — |
| +44 159151 | Quarantined | — |
| +44 159152 | Allocated | Nexus Telecommunications Limited |
| +44 159153 | Allocated | Andrews & Arnold (Numbers) Ltd |
| +44 159154 | Allocated | Invade International Ltd |
| +44 159155 | Allocated | CFL Communications Ltd |
| +44 1591560 | Allocated | Digitech Solutions Global Limited |
| +44 1591561 | Allocated | Colt Technology Services |
| +44 1591562 | Allocated | Windsor Telecom Limited |
| +44 1591563 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1591564 | Allocated | VoiceHost Limited |
| +44 1591565 | Allocated | Suretec Systems Ltd |
| +44 1591566 | Allocated | Atomstream Limited |
| +44 1591567 | Allocated | Telappliant Limited |
| +44 1591568 | Allocated | GCI Network Solutions Limited |
| +44 1591569 | Protected | — |
| +44 1591570 | Allocated | Phone Co-Op Numbering Limited |
| +44 1591571 | Protected | — |
| +44 1591572 | Allocated | Invosys Limited |
| +44 1591573 | Allocated | Nexbridge Communications Limited |
| +44 1591574 | Allocated | INTELLIGENT EXCHANGES LIMITED |
| +44 1591575 | Allocated | YayYay Limited |
| +44 1591576 | Allocated | Orbtalk Limited |
| +44 1591577 | Protected | — |
| +44 1591578 | Protected | — |
| +44 1591579 | Allocated | Invoco Ltd |
| +44 1591580 | Allocated | Hello Telecom (UK) Limited |
| +44 1591581 | Allocated | Internexus Networks Limited |
| +44 1591582 | Allocated | Bicom Systems EURL |
| +44 1591583 | Allocated | 8x8 Communications UK Limited |
| +44 1591584 | Allocated | IOVOX Limited |
| +44 1591585 | Protected | — |
| +44 1591586 | Allocated | ICC Networks Ltd |
| +44 1591587 | Allocated | Ziron Limited |
| +44 1591588 | Allocated | Simwood eSMS Limited |
| +44 1591589 | Protected | — |
| +44 159159 | Protected | — |
| +44 1591600 | Allocated | Linear Telecoms Limited |
| +44 1591601 | Protected | — |
| +44 1591602 | Allocated | Adepteo Limited |
| +44 1591603 | Allocated | IP Voice Networks Ltd |
| +44 1591604 | Allocated | Fuse 2 Communications Ltd |
| +44 1591605 | Free | — |
| +44 1591606 | Free | — |
| +44 1591607 | Allocated | I.T Communications Limited |
| +44 1591608 | Allocated | Mintaka Limited |
| +44 1591609 | Allocated | Number Services Ltd. |
| +44 159161 | Allocated | BT |
| +44 159162 | Allocated | BT |
| +44 1591630 | Allocated | Gamma Telecom Holdings Limited |
| +44 1591631 | Allocated | Gamma Telecom Holdings Limited |
| +44 1591632 | Allocated | Gamma Telecom Holdings Limited |
| +44 1591633 | Allocated | Gamma Telecom Holdings Limited |
| +44 1591634 | Allocated | Gamma Telecom Holdings Limited |
| +44 1591635 | Allocated | Gamma Telecom Holdings Limited |
| +44 1591636 | Allocated | Gamma Telecom Holdings Limited |
| +44 1591637 | Allocated | Gamma Telecom Holdings Limited |
| +44 1591638 | Protected | — |
| +44 1591639 | Protected | — |
| +44 159164 | Allocated | Nationwide Telephone Assistance Ltd |
| +44 159165 | Protected | — |
| +44 159166 | Allocated | Magrathea Telecommunications Limited |
| +44 159167 | Allocated | Flextel Limited |
| +44 1591680 | Allocated | EVE CONNECT LTD |
| +44 1591681 | Allocated | Sky UK Limited |
| +44 1591682 | Allocated | 24 Seven Cloud Communications Ltd |
| +44 1591683 | Allocated | SiPalto Ltd |
| +44 1591684 | Allocated | Mi Telecom Limited |
| +44 1591685 | Allocated | Dial 9 Communications Limited |
Related lookups
- 01550 Llandovery16 km away
- 01982 Builth Wells17 km away
- 01597 Llandrindod Wells23 km away
- 01874 Brecon24 km away
- Gamma Telecom Holdings Limited8 allocated blocks on 01591
- BT2 allocated blocks on 01591
- Digital Space Group Limited2 allocated blocks on 01591
- 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 01591
Where is area code 01591?
01591 is Ofcom's Llanwrtyd Wells numbering area, in Powys, Wales. Its exchange town is in Powys. From abroad, drop the 0 and dial +44 1591.
Do I need to dial 01591 for a local call?
Traditionally not from another 01591 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01591 first always works, and mobiles always need it.
How are 01591 numbers written?
Numbers on 01591 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01591 234 567. From abroad the leading zero is dropped: +44 1591 then the local number.
What was the 01591 area code before?
01591 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 0591. Old signage or stationery showing 0591 refers to the same Llanwrtyd Wells numbers.
Which phone companies hold 01591 numbers?
Ofcom lists 77 providers with allocated blocks on 01591. The largest are Gamma Telecom Holdings Limited with 8 of the 88 allocated blocks, BT with 2 of the 88 allocated blocks and Digital Space Group Limited with 2 of the 88 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 01591?
By distance between exchange towns, the nearest other codes are 01550 Llandovery (16 km), 01982 Builth Wells (17 km), 01597 Llandrindod Wells (23 km) and 01874 Brecon (24 km).
How do I report a scam call from a 01591 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.