UK area code
01635 area code — Newbury
01635 is Ofcom’s Newbury numbering area, in Berkshire, South East England. 109 phone companies hold its 235 allocated number blocks. Its numbers are written like 01635 234 567. The nearest other codes are 01488 Hungerford (14 km) and 01256 Basingstoke (18 km).
01635 at a glance
- Ofcom area name
- Newbury
- County
- Berkshire
- Council area
- West Berkshire
- Region
- South East England
- Number format
- 01635 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0635)
- Allocated blocks
- 235 of 388 (61%) across 109 providers
- Newest block
- 17 March 2026 (2 in the last 12 months)
Sources: Ofcom numbering data (weekly) and area-code list, Ofcom Numbering Plan, ONS geography.
If a 01635 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.
01635 history and number format
Number format: Numbers on 01635 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01635 234 567.
Before 1995: 01635 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 0635.
Local dialling: Traditionally not from another 01635 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01635 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01635 was allocated on 15 July 1994, and the most recent on 17 March 2026. 2 blocks were allocated in the last 12 months — newly-activated ranges with no call history, which is worth knowing when an unfamiliar 01635 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01635 numbers
Every Ofcom range holder with blocks on 01635, 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 | 53 | 53 | 15 July 1994 | 6 October 2022 |
| Virgin Media Limited | 14 | 14 | 25 June 1996 | 27 June 2012 |
| Gamma Telecom Holdings Limited | 11 | 11 | 16 October 2002 | 22 September 2021 |
| GTT-EMEA LTD | 10 | 10 | 15 October 2021 | 15 October 2021 |
| Vodafone Ltd (C&W) | 8 | 8 | 9 September 2013 | 10 November 2021 |
| Magrathea Telecommunications Limited | 7 | 7 | 16 November 2011 | 16 November 2011 |
| Sky UK Limited | 7 | 7 | 1 July 2013 | 18 November 2020 |
| Colt Technology Services | 6 | 6 | 22 November 2011 | 27 February 2025 |
| GCI Network Solutions Limited | 6 | 6 | 25 April 2017 | 26 February 2024 |
| TalkTalk Communications Limited | 4 | 4 | 19 June 2006 | 15 February 2013 |
| Daisy Communications Ltd | 3 | 3 | 14 December 2011 | 14 December 2011 |
| Digital Space Group Limited | 3 | 3 | 16 May 2008 | 12 April 2016 |
| Lumen Technologies UK Limited | 3 | 3 | 3 April 2006 | 3 April 2006 |
| Calltracks Limited | 2 | 2 | 23 September 2013 | 3 March 2017 |
| Datazero Ltd | 2 | 2 | 2 November 2010 | 29 April 2019 |
| Fuse 2 Communications Ltd | 2 | 2 | 3 July 2017 | 22 January 2024 |
| Voxbone SA | 2 | 2 | 23 September 2008 | 17 January 2022 |
| (AQ) LIMITED | 1 | 1 | 12 September 2012 | 12 September 2012 |
| 24 Seven Cloud Communications Ltd | 1 | 1 | 30 September 2019 | 30 September 2019 |
| 8x8 Communications UK Limited | 1 | 1 | 5 April 2012 | 5 April 2012 |
| 8x8 UK Limited | 1 | 1 | 24 February 2010 | 24 February 2010 |
| AQL Wholesale Ltd | 1 | 1 | 1 November 2004 | 1 November 2004 |
| Adepteo Limited | 1 | 1 | 6 December 2016 | 6 December 2016 |
| Adviqo UK Limited | 1 | 1 | 12 June 2012 | 12 June 2012 |
| Alnitak GmbH | 1 | 1 | 14 January 2016 | 14 January 2016 |
| Andrews & Arnold (Numbers) Ltd | 1 | 1 | 25 March 2009 | 25 March 2009 |
| Atomstream Limited | 1 | 1 | 23 March 2010 | 23 March 2010 |
| Barritel Limited | 1 | 1 | 8 October 2008 | 8 October 2008 |
| Belgacom International Carrier Services SA | 1 | 1 | 9 April 2020 | 9 April 2020 |
| Bicom Systems EURL | 1 | 1 | 1 March 2012 | 1 March 2012 |
Showing the 30 largest of 109 holders.
All number blocks on 01635first 200 of 388, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 163500 | Allocated | Adviqo UK Limited |
| +44 163501 | Allocated | Gamma Telecom Holdings Limited |
| +44 163502 | Protected | — |
| +44 163503 | Protected | — |
| +44 163504 | Protected | — |
| +44 163505 | Protected | — |
| +44 163506 | Protected | — |
| +44 163507 | Protected | — |
| +44 163508 | Protected | — |
| +44 163509 | Protected | — |
| +44 1635100 | Protected | — |
| +44 1635101 | Protected | — |
| +44 1635102 | Protected | — |
| +44 1635103 | Protected | — |
| +44 1635104 | Protected | — |
| +44 1635105 | Protected | — |
| +44 1635106 | Protected | — |
| +44 1635107 | Protected | — |
| +44 1635108 | Protected | — |
| +44 1635109 | Protected | — |
| +44 163511 | Protected | — |
| +44 163512 | Protected | — |
| +44 163513 | Protected | — |
| +44 163514 | Protected | — |
| +44 163515 | Protected | — |
| +44 163516 | Protected | — |
| +44 163517 | Protected | — |
| +44 163518 | Protected | — |
| +44 163519 | Protected | — |
| +44 163520 | Allocated | BT |
| +44 163521 | Allocated | Verizon UK Limited |
| +44 1635220 | Allocated | Lumen Technologies UK Limited |
| +44 1635221 | Allocated | Lumen Technologies UK Limited |
| +44 1635222 | Allocated | Planet Telecom Ltd |
| +44 1635223 | Allocated | Lumen Technologies UK Limited |
| +44 1635224 | Allocated | TTNC Limited |
| +44 1635225 | Allocated | Digital Space Group Limited |
| +44 1635226 | Allocated | TalkTalk Communications Limited |
| +44 1635227 | Allocated | Spitfire Network Services Limited |
| +44 1635228 | Allocated | Sky UK Limited |
| +44 1635229 | Allocated | Digital Mail Limited |
| +44 163523 | Allocated | BT |
| +44 163524 | Allocated | BT |
| +44 163525 | Allocated | BT |
| +44 163526 | Allocated | BT |
| +44 163527 | Allocated | BT |
| +44 1635280 | Allocated | BT |
| +44 1635281 | Allocated | BT |
| +44 1635282 | Allocated | BT |
| +44 1635283 | Allocated | BT |
| +44 1635284 | Protected | — |
| +44 1635285 | Allocated | BT |
| +44 1635286 | Allocated | BT |
| +44 1635287 | Allocated | BT |
| +44 1635288 | Allocated | BT |
| +44 1635289 | Allocated | BT |
| +44 163529 | Allocated | BT |
| +44 163530 | Allocated | BT |
| +44 163531 | Allocated | BT |
| +44 163532 | Allocated | BT |
| +44 163533 | Allocated | BT |
| +44 163534 | Allocated | BT |
| +44 163535 | Allocated | BT |
| +44 163536 | Allocated | BT |
| +44 163537 | Allocated | BT |
| +44 163538 | Allocated | BT |
| +44 163539 | Allocated | BT |
| +44 163540 | Allocated | BT |
| +44 163541 | Allocated | BT |
| +44 163542 | Allocated | BT |
| +44 163543 | Allocated | BT |
| +44 163544 | Allocated | BT |
| +44 163545 | Allocated | BT |
| +44 163546 | Allocated | BT |
| +44 163547 | Allocated | BT |
| +44 163548 | Allocated | BT |
| +44 163549 | Allocated | BT |
| +44 163550 | Allocated | BT |
| +44 163551 | Allocated | BT |
| +44 163552 | Allocated | BT |
| +44 1635530 | Free | — |
| +44 1635531 | Free | — |
| +44 1635532 | Free | — |
| +44 1635533 | Free | — |
| +44 1635534 | Allocated | Colt Technology Services |
| +44 1635535 | Protected | — |
| +44 1635536 | Protected | — |
| +44 1635537 | Protected | — |
| +44 1635538 | Protected | — |
| +44 1635539 | Protected | — |
| +44 1635540 | Protected | — |
| +44 1635541 | Protected | — |
| +44 1635542 | Protected | — |
| +44 1635543 | Protected | — |
| +44 1635544 | Protected | — |
| +44 1635545 | Protected | — |
| +44 1635546 | Protected | — |
| +44 1635547 | Protected | — |
| +44 1635548 | Protected | — |
| +44 1635549 | Protected | — |
| +44 163555 | Allocated | BT |
| +44 163556 | Allocated | BT |
| +44 163557 | Allocated | BT |
| +44 163558 | Allocated | BT |
| +44 1635590 | Allocated | (AQ) LIMITED |
| +44 1635591 | Allocated | VoIP-Un Limited |
| +44 1635592 | Allocated | GCI Network Solutions Limited |
| +44 1635593 | Allocated | Digital Space Group Limited |
| +44 1635594 | Allocated | Digital Space Group Limited |
| +44 1635595 | Allocated | Net-Work Internet Ltd |
| +44 1635596 | Allocated | Telecom2 Limited |
| +44 1635597 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1635598 | Allocated | Voxbone SA |
| +44 1635599 | Allocated | Mars Communications Limited |
| +44 1635600 | Allocated | Virgin Media Limited |
| +44 1635601 | Allocated | Virgin Media Limited |
| +44 1635602 | Protected | — |
| +44 1635603 | Allocated | Sky UK Limited |
| +44 1635604 | Protected | — |
| +44 1635605 | Protected | — |
| +44 1635606 | Allocated | Virgin Media Limited |
| +44 1635607 | Protected | — |
| +44 1635608 | Protected | — |
| +44 1635609 | Protected | — |
| +44 1635610 | Protected | — |
| +44 1635611 | Allocated | Daisy Communications Ltd |
| +44 1635612 | Allocated | Daisy Communications Ltd |
| +44 1635613 | Allocated | Daisy Communications Ltd |
| +44 1635614 | Protected | — |
| +44 1635615 | Protected | — |
| +44 1635616 | Protected | — |
| +44 1635617 | Protected | — |
| +44 1635618 | Protected | — |
| +44 1635619 | Protected | — |
| +44 1635620 | Allocated | Nodemax Limited |
| +44 1635621 | Allocated | Nationwide Telephone Assistance Ltd |
| +44 1635622 | Allocated | TalkTalk Communications Limited |
| +44 1635623 | Protected | — |
| +44 1635624 | Protected | — |
| +44 1635625 | Allocated | Barritel Limited |
| +44 1635626 | Allocated | Solutios Limited |
| +44 1635627 | Protected | — |
| +44 1635628 | Allocated | Sky UK Limited |
| +44 1635629 | Quarantined | — |
| +44 1635630 | Protected | — |
| +44 1635631 | Protected | — |
| +44 1635632 | Protected | — |
| +44 1635633 | Protected | — |
| +44 1635634 | Protected | — |
| +44 1635635 | Allocated | BT |
| +44 1635636 | Protected | — |
| +44 1635637 | Protected | — |
| +44 1635638 | Protected | — |
| +44 1635639 | Protected | — |
| +44 163564 | Allocated | BT |
| +44 1635650 | Protected | — |
| +44 1635651 | Protected | — |
| +44 1635652 | Protected | — |
| +44 1635653 | Protected | — |
| +44 1635654 | Protected | — |
| +44 1635655 | Protected | — |
| +44 1635656 | Allocated | Vodafone Ltd (C&W) |
| +44 1635657 | Protected | — |
| +44 1635658 | Allocated | Vodafone Ltd (C&W) |
| +44 1635659 | Allocated | Vodafone Ltd (C&W) |
| +44 163566 | Allocated | BT |
| +44 163567 | Allocated | BT |
| +44 163568 | Allocated | BT |
| +44 163569 | Allocated | Vodafone Limited |
| +44 1635700 | Protected | — |
| +44 1635701 | Allocated | DRD Communications Limited |
| +44 1635702 | Protected | — |
| +44 1635703 | Protected | — |
| +44 1635704 | Protected | — |
| +44 1635705 | Protected | — |
| +44 1635706 | Protected | — |
| +44 1635707 | Protected | — |
| +44 1635708 | Protected | — |
| +44 1635709 | Protected | — |
| +44 1635710 | Allocated | GTT-EMEA LTD |
| +44 1635711 | Allocated | GTT-EMEA LTD |
| +44 1635712 | Allocated | GTT-EMEA LTD |
| +44 1635713 | Allocated | GTT-EMEA LTD |
| +44 1635714 | Allocated | GTT-EMEA LTD |
| +44 1635715 | Allocated | GTT-EMEA LTD |
| +44 1635716 | Allocated | GTT-EMEA LTD |
| +44 1635717 | Allocated | GTT-EMEA LTD |
| +44 1635718 | Allocated | GTT-EMEA LTD |
| +44 1635719 | Allocated | GTT-EMEA LTD |
| +44 1635720 | Protected | — |
| +44 1635721 | Allocated | Bicom Systems EURL |
| +44 1635722 | Allocated | 8x8 Communications UK Limited |
| +44 1635723 | Allocated | ICC Networks Ltd |
| +44 1635724 | Allocated | Ziron Limited |
| +44 1635725 | Allocated | Datazero Ltd |
| +44 1635726 | Allocated | IOVOX Limited |
| +44 1635727 | Protected | — |
| +44 1635728 | Allocated | Invoco Ltd |
| +44 1635729 | Allocated | Sky UK Limited |
| +44 1635730 | Allocated | Nuso Cloud UK Limited |
Related lookups
- 01488 Hungerford14 km away
- 01256 Basingstoke18 km away
- 01264 Andover21 km away
- 0118 Reading25 km away
- BT53 allocated blocks on 01635
- Virgin Media Limited14 allocated blocks on 01635
- Gamma Telecom Holdings Limited11 allocated blocks on 01635
- All UK towns A–ZDialling codes by town
- More Berkshire 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 01635
Where is area code 01635?
01635 is Ofcom's Newbury numbering area, in Berkshire, South East England. Its exchange town is in West Berkshire. From abroad, drop the 0 and dial +44 1635.
Do I need to dial 01635 for a local call?
Traditionally not from another 01635 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01635 first always works, and mobiles always need it.
How are 01635 numbers written?
Numbers on 01635 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01635 234 567. From abroad the leading zero is dropped: +44 1635 then the local number.
What was the 01635 area code before?
01635 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 0635. Old signage or stationery showing 0635 refers to the same Newbury numbers.
Which phone companies hold 01635 numbers?
Ofcom lists 109 providers with allocated blocks on 01635. The largest are BT with 53 of the 235 allocated blocks, Virgin Media Limited with 14 of the 235 allocated blocks and Gamma Telecom Holdings Limited with 11 of the 235 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 01635?
By distance between exchange towns, the nearest other codes are 01488 Hungerford (14 km), 01256 Basingstoke (18 km), 01264 Andover (21 km) and 0118 Reading (25 km).
How do I report a scam call from a 01635 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.