UK area code
01770 area code — Isle of Arran
01770 is Ofcom’s Isle of Arran numbering area, in North Ayrshire, Scotland. 75 phone companies hold its 91 allocated number blocks. Its numbers are written like 01770 234 567. The nearest other codes are 01583 Carradale (22 km) and 01294 Ardrossan (22 km).
01770 at a glance
- Ofcom area name
- Isle of Arran
- Council area
- North Ayrshire
- Country
- Scotland
- Number format
- 01770 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0770)
- Allocated blocks
- 91 of 433 (21%) across 75 providers
- Newest block
- 18 June 2026 (1 in the last 12 months)
Sources: Ofcom numbering data (weekly) and area-code list, Ofcom Numbering Plan, ONS geography.
If a 01770 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 Police Scotland on 101. In Scotland fraud goes to Police Scotland rather than Report Fraud.
01770 history and number format
Number format: Numbers on 01770 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01770 234 567.
Before 1995: 01770 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 0770.
Local dialling: Traditionally not from another 01770 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01770 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01770 was allocated on 15 July 1994, and the most recent on 18 June 2026. 1 block was allocated in the last 12 months — newly-activated ranges with no call history, which is worth knowing when an unfamiliar 01770 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01770 numbers
Every Ofcom range holder with blocks on 01770, 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 | 11 | 11 | 15 July 1994 | 15 September 1998 |
| Gamma Telecom Holdings Limited | 3 | 3 | 12 May 2005 | 18 June 2026 |
| 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 |
| 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 | 17 January 2020 | 17 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 |
| Alnitak GmbH | 1 | 1 | 7 July 2017 | 7 July 2017 |
| 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 |
| Bicom Systems EURL | 1 | 1 | 1 March 2012 | 1 March 2012 |
| Bink Networks Ltd | 1 | 1 | 3 April 2023 | 3 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 |
| Core Telecom Limited | 1 | 1 | 5 August 2010 | 5 August 2010 |
| DIDWW Ireland Limited | 1 | 1 | 22 January 2019 | 22 January 2019 |
| Dial 9 Communications Limited | 1 | 1 | 8 January 2020 | 8 January 2020 |
| Digitech Solutions Global Limited | 1 | 1 | 25 June 2012 | 25 June 2012 |
| EVE CONNECT LTD | 1 | 1 | 9 November 2022 | 9 November 2022 |
| Flextel Limited | 1 | 1 | 14 November 2005 | 14 November 2005 |
| Hello Telecom (UK) Limited | 1 | 1 | 13 December 2011 | 13 December 2011 |
| ICC Networks Ltd | 1 | 1 | 17 April 2012 | 17 April 2012 |
| ICUK Computing Services Limited | 1 | 1 | 17 June 2020 | 17 June 2020 |
Showing the 30 largest of 75 holders.
All number blocks on 01770first 200 of 433, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 177000 | Protected | — |
| +44 177001 | Protected | — |
| +44 177002 | Protected | — |
| +44 177003 | Protected | — |
| +44 177004 | Protected | — |
| +44 177005 | Protected | — |
| +44 177006 | Protected | — |
| +44 177007 | Protected | — |
| +44 177008 | Protected | — |
| +44 177009 | Protected | — |
| +44 177010 | Protected | — |
| +44 177011 | Protected | — |
| +44 177012 | Protected | — |
| +44 177013 | Protected | — |
| +44 177014 | Protected | — |
| +44 177015 | Protected | — |
| +44 177016 | Protected | — |
| +44 177017 | Protected | — |
| +44 177018 | Protected | — |
| +44 177019 | Protected | — |
| +44 1770200 | Protected | — |
| +44 1770201 | Protected | — |
| +44 1770202 | Protected | — |
| +44 1770203 | Protected | — |
| +44 1770204 | Protected | — |
| +44 1770205 | Protected | — |
| +44 1770206 | Protected | — |
| +44 1770207 | Protected | — |
| +44 1770208 | Protected | — |
| +44 1770209 | Protected | — |
| +44 177021 | Allocated | TelNG Limited |
| +44 177022 | Allocated | TTNC Limited |
| +44 177023 | Allocated | Localphone Limited |
| +44 1770240 | Protected | — |
| +44 1770241 | Protected | — |
| +44 1770242 | Protected | — |
| +44 1770243 | Protected | — |
| +44 1770244 | Protected | — |
| +44 1770245 | Protected | — |
| +44 1770246 | Protected | — |
| +44 1770247 | Protected | — |
| +44 1770248 | Allocated | TalkTalk Communications Limited |
| +44 1770249 | Allocated | TalkTalk Communications Limited |
| +44 177025 | Allocated | Barritel Limited |
| +44 177026 | Protected | — |
| +44 1770270 | Protected | — |
| +44 1770271 | Protected | — |
| +44 1770272 | Protected | — |
| +44 1770273 | Protected | — |
| +44 1770274 | Protected | — |
| +44 1770275 | Protected | — |
| +44 1770276 | Protected | — |
| +44 1770277 | Allocated | Spitfire Network Services Limited |
| +44 1770278 | Protected | — |
| +44 1770279 | Protected | — |
| +44 177028 | Allocated | (AQ) LIMITED |
| +44 177029 | Allocated | VoIP-Un Limited |
| +44 177030 | Allocated | BT |
| +44 177031 | Allocated | AQL Wholesale Ltd |
| +44 177032 | Allocated | Redcentric Solutions Limited |
| +44 177033 | Allocated | Net-Work Internet Ltd |
| +44 177034 | Allocated | Telecom2 Limited |
| +44 177035 | Allocated | Digital Space Group Limited |
| +44 177036 | Allocated | Nodemax Limited |
| +44 177037 | Allocated | Voiceflex Limited |
| +44 1770380 | Allocated | Voxbone SA |
| +44 1770381 | Protected | — |
| +44 1770382 | Protected | — |
| +44 1770383 | Protected | — |
| +44 1770384 | Protected | — |
| +44 1770385 | Protected | — |
| +44 1770386 | Protected | — |
| +44 1770387 | Protected | — |
| +44 1770388 | Protected | — |
| +44 1770389 | Protected | — |
| +44 177039 | Allocated | Served Up Limited |
| +44 177040 | Allocated | Vodafone Ltd (C&W) |
| +44 1770410 | Allocated | Linear Telecoms Limited |
| +44 1770411 | Allocated | Ziron Limited |
| +44 1770412 | Allocated | Content Guru Limited |
| +44 1770413 | Allocated | Minotaur Telecom Limited |
| +44 1770414 | Protected | — |
| +44 1770415 | Allocated | IOVOX Limited |
| +44 1770416 | Allocated | Kalnet4U Ltd |
| +44 1770417 | Allocated | Redwood Technologies Ltd |
| +44 1770418 | Allocated | Invoco Ltd |
| +44 1770419 | Allocated | XoverX Ltd |
| +44 177042 | Allocated | Flextel Limited |
| +44 1770430 | Protected | — |
| +44 1770431 | Protected | — |
| +44 1770432 | Protected | — |
| +44 1770433 | Protected | — |
| +44 1770434 | Protected | — |
| +44 1770435 | Protected | — |
| +44 1770436 | Protected | — |
| +44 1770437 | Protected | — |
| +44 1770438 | Protected | — |
| +44 1770439 | Protected | — |
| +44 177044 | Protected | — |
| +44 177045 | Allocated | GCI Network Solutions Limited |
| +44 177046 | Allocated | Gamma Telecom Holdings Limited |
| +44 1770470 | Allocated | Digitech Solutions Global Limited |
| +44 1770471 | Free | — |
| +44 1770472 | Free | — |
| +44 1770473 | Free | — |
| +44 1770474 | Allocated | KCOM Group Ltd |
| +44 1770475 | Allocated | Bink Networks Ltd |
| +44 1770476 | Free | — |
| +44 1770477 | Free | — |
| +44 1770478 | Free | — |
| +44 1770479 | Protected | — |
| +44 177048 | Protected | — |
| +44 1770490 | Allocated | Internexus Networks Limited |
| +44 1770491 | Allocated | Hello Telecom (UK) Limited |
| +44 1770492 | Allocated | Simwood eSMS Limited |
| +44 1770493 | Protected | — |
| +44 1770494 | Allocated | Orbtalk Limited |
| +44 1770495 | Allocated | Bicom Systems EURL |
| +44 1770496 | Protected | — |
| +44 1770497 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1770498 | Allocated | 8x8 Communications UK Limited |
| +44 1770499 | Allocated | YayYay Limited |
| +44 177050 | Allocated | Solutios Limited |
| +44 1770510 | Protected | — |
| +44 1770511 | Protected | — |
| +44 1770512 | Protected | — |
| +44 1770513 | Protected | — |
| +44 1770514 | Protected | — |
| +44 1770515 | Protected | — |
| +44 1770516 | Protected | — |
| +44 1770517 | Allocated | Digital Space Group Limited |
| +44 1770518 | Protected | — |
| +44 1770519 | Protected | — |
| +44 177052 | Allocated | Mars Communications Limited |
| +44 177053 | Quarantined | — |
| +44 177054 | Allocated | Nexus Telecommunications Limited |
| +44 177055 | Allocated | Andrews & Arnold (Numbers) Ltd |
| +44 177056 | Allocated | Telecoms World Limited |
| +44 177057 | Quarantined | — |
| +44 177058 | Allocated | CFL Communications Ltd |
| +44 1770590 | Allocated | Convergence Group (wireless) Networks Limited |
| +44 1770591 | Protected | — |
| +44 1770592 | Allocated | Core Telecom Limited |
| +44 1770593 | Allocated | Telephone Box Limited |
| +44 1770594 | Allocated | GCI Network Solutions Limited |
| +44 1770595 | Allocated | Suretec Systems Ltd |
| +44 1770596 | Protected | — |
| +44 1770597 | Allocated | Telappliant Limited |
| +44 1770598 | Allocated | Atomstream Limited |
| +44 1770599 | Allocated | Windsor Telecom Limited |
| +44 177060 | Allocated | BT |
| +44 1770610 | Protected | — |
| +44 1770611 | Allocated | Nexbridge Communications Limited |
| +44 1770612 | Protected | — |
| +44 1770613 | Allocated | Invosys Limited |
| +44 1770614 | Allocated | ICC Networks Ltd |
| +44 1770615 | Allocated | Gamma Telecom Holdings Limited |
| +44 1770616 | Allocated | Gamma Telecom Holdings Limited |
| +44 1770617 | Free | — |
| +44 1770618 | Free | — |
| +44 1770619 | Free | — |
| +44 177062 | Protected | — |
| +44 1770630 | Allocated | EVE CONNECT LTD |
| +44 1770631 | Allocated | Sky UK Limited |
| +44 1770632 | Allocated | Dial 9 Communications Limited |
| +44 1770633 | Allocated | 24 Seven Cloud Communications Ltd |
| +44 1770634 | Allocated | VOXYONDER NETWORK SERVICES UK LTD |
| +44 1770635 | Free | — |
| +44 1770636 | Allocated | DIDWW Ireland Limited |
| +44 1770637 | Allocated | ICUK Computing Services Limited |
| +44 1770638 | Allocated | Mi Telecom Limited |
| +44 1770639 | Protected | — |
| +44 1770640 | Protected | — |
| +44 1770641 | Allocated | Adepteo Limited |
| +44 1770642 | Allocated | Number Services Ltd. |
| +44 1770643 | Allocated | Zapappi Ltd |
| +44 1770644 | Allocated | Fuse 2 Communications Ltd |
| +44 1770645 | Protected | — |
| +44 1770646 | Allocated | Colt Technology Services |
| +44 1770647 | Allocated | Alnitak GmbH |
| +44 1770648 | Allocated | Fuse 2 Communications Ltd |
| +44 1770649 | Allocated | IP Voice Networks Ltd |
| +44 1770650 | Protected | — |
| +44 1770651 | Protected | — |
| +44 1770652 | Protected | — |
| +44 1770653 | Protected | — |
| +44 1770654 | Protected | — |
| +44 1770655 | Protected | — |
| +44 1770656 | Protected | — |
| +44 1770657 | Protected | — |
| +44 1770658 | Protected | — |
| +44 1770659 | Protected | — |
| +44 1770660 | Protected | — |
| +44 1770661 | Protected | — |
| +44 1770662 | Protected | — |
| +44 1770663 | Protected | — |
| +44 1770664 | Protected | — |
| +44 1770665 | Protected | — |
| +44 1770666 | Protected | — |
| +44 1770667 | Protected | — |
Related lookups
- 01583 Carradale22 km away
- 01294 Ardrossan22 km away
- 01700 Rothesay29 km away
- 01586 Campbeltown33 km away
- BT11 allocated blocks on 01770
- Gamma Telecom Holdings Limited3 allocated blocks on 01770
- Digital Space Group Limited2 allocated blocks on 01770
- All UK towns A–ZDialling codes by town
- More Scotland 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 01770
Where is area code 01770?
01770 is Ofcom's Isle of Arran numbering area, in North Ayrshire, Scotland. Its exchange town is in North Ayrshire. From abroad, drop the 0 and dial +44 1770.
Do I need to dial 01770 for a local call?
Traditionally not from another 01770 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01770 first always works, and mobiles always need it.
How are 01770 numbers written?
Numbers on 01770 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01770 234 567. From abroad the leading zero is dropped: +44 1770 then the local number.
What was the 01770 area code before?
01770 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 0770. Old signage or stationery showing 0770 refers to the same Isle of Arran numbers.
Which phone companies hold 01770 numbers?
Ofcom lists 75 providers with allocated blocks on 01770. The largest are BT with 11 of the 91 allocated blocks, Gamma Telecom Holdings Limited with 3 of the 91 allocated blocks and Digital Space Group Limited with 2 of the 91 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 01770?
By distance between exchange towns, the nearest other codes are 01583 Carradale (22 km), 01294 Ardrossan (22 km), 01700 Rothesay (29 km) and 01586 Campbeltown (33 km).
How do I report a scam call from a 01770 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 Police Scotland on 101. Unwanted sales calls go to the ICO after registering with the Telephone Preference Service.