UK area code
01389 area code — Dumbarton
01389 is Ofcom’s Dumbarton numbering area, in West Dunbartonshire, Scotland. 95 phone companies hold its 133 allocated number blocks. Its numbers are written like 01389 234 567. The nearest other codes are 01475 Greenock (12 km) and 01436 Helensburgh (12 km).
01389 at a glance
- Ofcom area name
- Dumbarton
- Council area
- West Dunbartonshire
- Country
- Scotland
- Number format
- 01389 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0389)
- Allocated blocks
- 133 of 433 (31%) across 95 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 01389 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.
01389 history and number format
Number format: Numbers on 01389 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01389 234 567.
Before 1995: 01389 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 0389.
Local dialling: Traditionally not from another 01389 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01389 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01389 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 01389 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01389 numbers
Every Ofcom range holder with blocks on 01389, 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 | 14 | 14 | 15 July 1994 | 11 March 2021 |
| Vodafone Ltd (C&W) | 12 | 12 | 6 September 2013 | 10 November 2021 |
| Sky UK Limited | 6 | 6 | 12 June 2013 | 3 March 2020 |
| TalkTalk Communications Limited | 3 | 3 | 19 January 2012 | 13 February 2013 |
| Virgin Media Limited | 3 | 3 | 15 July 1994 | 17 March 2016 |
| Colt Technology Services | 2 | 2 | 21 October 2011 | 10 May 2023 |
| Digital Space Group Limited | 2 | 2 | 30 November 2007 | 15 March 2016 |
| Fuse 2 Communications Ltd | 2 | 2 | 3 July 2017 | 22 January 2024 |
| GCI Network Solutions Limited | 2 | 2 | 25 April 2017 | 20 December 2023 |
| Zapappi Ltd | 2 | 2 | 5 January 2018 | 5 January 2018 |
| (AQ) LIMITED | 1 | 1 | 19 October 2011 | 19 October 2011 |
| 24 Seven Cloud Communications Ltd | 1 | 1 | 17 January 2020 | 17 January 2020 |
| 8x8 Communications UK Limited | 1 | 1 | 27 March 2012 | 27 March 2012 |
| AQL Wholesale Ltd | 1 | 1 | 23 June 2006 | 23 June 2006 |
| Adepteo Limited | 1 | 1 | 17 January 2017 | 17 January 2017 |
| Alnitak GmbH | 1 | 1 | 6 April 2016 | 6 April 2016 |
| Andrews & Arnold (Numbers) Ltd | 1 | 1 | 5 March 2009 | 5 March 2009 |
| Atomstream Limited | 1 | 1 | 22 March 2010 | 22 March 2010 |
| Barritel Limited | 1 | 1 | 2 November 2006 | 2 November 2006 |
| Belgacom International Carrier Services SA | 1 | 1 | 16 September 2021 | 16 September 2021 |
| Bicom Systems EURL | 1 | 1 | 2 March 2012 | 2 March 2012 |
| Bink Networks Ltd | 1 | 1 | 29 March 2023 | 29 March 2023 |
| CFL Communications Ltd | 1 | 1 | 9 July 2009 | 9 July 2009 |
| Calltracks Limited | 1 | 1 | 20 September 2013 | 20 September 2013 |
| Chess Limited | 1 | 1 | 6 April 2018 | 6 April 2018 |
| Citrus Telecommunications Ltd | 1 | 1 | 12 April 2006 | 12 April 2006 |
| Content Guru Limited | 1 | 1 | 12 October 2012 | 12 October 2012 |
| Core Telecom Limited | 1 | 1 | 5 August 2010 | 5 August 2010 |
| DIDWW Ireland Limited | 1 | 1 | 27 January 2020 | 27 January 2020 |
| DRD Communications Limited | 1 | 1 | 5 October 2023 | 5 October 2023 |
Showing the 30 largest of 95 holders.
All number blocks on 01389first 200 of 433, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 138900 | Protected | — |
| +44 138901 | Protected | — |
| +44 138902 | Protected | — |
| +44 138903 | Protected | — |
| +44 138904 | Protected | — |
| +44 138905 | Protected | — |
| +44 138906 | Protected | — |
| +44 138907 | Protected | — |
| +44 138908 | Protected | — |
| +44 138909 | Protected | — |
| +44 138910 | Protected | — |
| +44 138911 | Protected | — |
| +44 138912 | Protected | — |
| +44 138913 | Protected | — |
| +44 138914 | Protected | — |
| +44 138915 | Protected | — |
| +44 138916 | Protected | — |
| +44 138917 | Protected | — |
| +44 138918 | Protected | — |
| +44 138919 | Protected | — |
| +44 1389200 | Protected | — |
| +44 1389201 | Protected | — |
| +44 1389202 | Protected | — |
| +44 1389203 | Protected | — |
| +44 1389204 | Protected | — |
| +44 1389205 | Protected | — |
| +44 1389206 | Protected | — |
| +44 1389207 | Protected | — |
| +44 1389208 | Protected | — |
| +44 1389209 | Protected | — |
| +44 138921 | Allocated | Localphone Limited |
| +44 138922 | Allocated | Barritel Limited |
| +44 138923 | Allocated | TelNG Limited |
| +44 138924 | Allocated | Redcentric Solutions Limited |
| +44 138925 | Protected | — |
| +44 138926 | Allocated | Voiceflex Limited |
| +44 138927 | Allocated | TTNC Limited |
| +44 138928 | Protected | — |
| +44 1389290 | Protected | — |
| +44 1389291 | Protected | — |
| +44 1389292 | Protected | — |
| +44 1389293 | Protected | — |
| +44 1389294 | Protected | — |
| +44 1389295 | Protected | — |
| +44 1389296 | Protected | — |
| +44 1389297 | Protected | — |
| +44 1389298 | Allocated | TalkTalk Communications Limited |
| +44 1389299 | Allocated | TalkTalk Communications Limited |
| +44 138930 | Allocated | TGL Services (UK) Ltd |
| +44 138931 | Allocated | Gamma Telecom Holdings Limited |
| +44 138932 | Protected | — |
| +44 138933 | Allocated | GCI Network Solutions Limited |
| +44 1389340 | Allocated | Vodafone Ltd (C&W) |
| +44 1389341 | Allocated | Vodafone Ltd (C&W) |
| +44 1389342 | Allocated | Vodafone Ltd (C&W) |
| +44 1389343 | Allocated | Vodafone Ltd (C&W) |
| +44 1389344 | Allocated | Vodafone Ltd (C&W) |
| +44 1389345 | Allocated | Vodafone Ltd (C&W) |
| +44 1389346 | Allocated | Vodafone Ltd (C&W) |
| +44 1389347 | Protected | — |
| +44 1389348 | Protected | — |
| +44 1389349 | Protected | — |
| +44 138935 | Allocated | Flextel Limited |
| +44 1389360 | Allocated | Vodafone Ltd (C&W) |
| +44 1389361 | Allocated | Vodafone Ltd (C&W) |
| +44 1389362 | Protected | — |
| +44 1389363 | Protected | — |
| +44 1389364 | Protected | — |
| +44 1389365 | Protected | — |
| +44 1389366 | Allocated | Vodafone Ltd (C&W) |
| +44 1389367 | Protected | — |
| +44 1389368 | Protected | — |
| +44 1389369 | Allocated | Vodafone Ltd (C&W) |
| +44 138937 | Protected | — |
| +44 138938 | Allocated | Virgin Media Limited |
| +44 138939 | Allocated | Served Up Limited |
| +44 138940 | Allocated | Nationwide Telephone Assistance Ltd |
| +44 138941 | Allocated | VoIP-Un Limited |
| +44 138942 | Allocated | (AQ) LIMITED |
| +44 1389430 | Protected | — |
| +44 1389431 | Protected | — |
| +44 1389432 | Protected | — |
| +44 1389433 | Protected | — |
| +44 1389434 | Protected | — |
| +44 1389435 | Protected | — |
| +44 1389436 | Protected | — |
| +44 1389437 | Allocated | Digital Space Group Limited |
| +44 1389438 | Protected | — |
| +44 1389439 | Protected | — |
| +44 138944 | Allocated | Net-Work Internet Ltd |
| +44 138945 | Allocated | Digital Space Group Limited |
| +44 1389460 | Allocated | Nodemax Limited |
| +44 1389461 | Allocated | Pulsant (Scotland) Limited |
| +44 1389462 | Allocated | Solutios Limited |
| +44 1389463 | Quarantined | — |
| +44 1389464 | Protected | — |
| +44 1389465 | Allocated | Mars Communications Limited |
| +44 1389466 | Allocated | Telecom2 Limited |
| +44 1389467 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1389468 | Allocated | Voxbone SA |
| +44 1389469 | Allocated | Andrews & Arnold (Numbers) Ltd |
| +44 1389470 | Allocated | Sky UK Limited |
| +44 1389471 | Allocated | Invade International Ltd |
| +44 1389472 | Quarantined | — |
| +44 1389473 | Allocated | CFL Communications Ltd |
| +44 1389474 | Protected | — |
| +44 1389475 | Allocated | TeleWare Group Limited |
| +44 1389476 | Allocated | Nexus Telecommunications Limited |
| +44 1389477 | Protected | — |
| +44 1389478 | Allocated | Nuso Cloud UK Limited |
| +44 1389479 | Allocated | Calltracks Limited |
| +44 1389480 | Allocated | Windsor Telecom Limited |
| +44 1389481 | Allocated | Digitech Solutions Global Limited |
| +44 1389482 | Allocated | Atomstream Limited |
| +44 1389483 | Allocated | Core Telecom Limited |
| +44 1389484 | Allocated | Suretec Systems Ltd |
| +44 1389485 | Allocated | Telappliant Limited |
| +44 1389486 | Allocated | GCI Network Solutions Limited |
| +44 1389487 | Allocated | Telephone Box Limited |
| +44 1389488 | Allocated | VoiceHost Limited |
| +44 1389489 | Protected | — |
| +44 1389490 | Allocated | Phone Co-Op Numbering Limited |
| +44 1389491 | Protected | — |
| +44 1389492 | Allocated | Invosys Limited |
| +44 1389493 | Allocated | Nexbridge Communications Limited |
| +44 1389494 | Allocated | INTELLIGENT EXCHANGES LIMITED |
| +44 1389495 | Protected | — |
| +44 1389496 | Allocated | TalkTalk Communications Limited |
| +44 1389497 | Allocated | Orbtalk Limited |
| +44 1389498 | Protected | — |
| +44 1389499 | Allocated | Sky UK Limited |
| +44 1389500 | Allocated | Invoco Ltd |
| +44 1389501 | Allocated | Colt Technology Services |
| +44 1389502 | Allocated | Internexus Networks Limited |
| +44 1389503 | Allocated | Bicom Systems EURL |
| +44 1389504 | Allocated | Simwood eSMS Limited |
| +44 1389505 | Protected | — |
| +44 1389506 | Allocated | 8x8 Communications UK Limited |
| +44 1389507 | Allocated | ICC Networks Ltd |
| +44 1389508 | Allocated | IOVOX Limited |
| +44 1389509 | Allocated | Ziron Limited |
| +44 1389510 | Allocated | Minotaur Telecom Limited |
| +44 1389511 | Protected | — |
| +44 1389512 | Allocated | Hello Telecom (UK) Limited |
| +44 1389513 | Allocated | Sky UK Limited |
| +44 1389514 | Protected | — |
| +44 1389515 | Allocated | Content Guru Limited |
| +44 1389516 | Allocated | Media Hawk Ltd |
| +44 1389517 | Allocated | Kalnet4U Ltd |
| +44 1389518 | Allocated | Sky UK Limited |
| +44 1389519 | Allocated | XoverX Ltd |
| +44 1389520 | Allocated | YayYay Limited |
| +44 1389521 | Allocated | Sky UK Limited |
| +44 1389522 | Allocated | Fuse 2 Communications Ltd |
| +44 1389523 | Allocated | M247 Ltd |
| +44 1389524 | Protected | — |
| +44 1389525 | Allocated | Redwood Technologies Ltd |
| +44 1389526 | Allocated | Zapappi Ltd |
| +44 1389527 | Allocated | Resilient Limited |
| +44 1389528 | Allocated | Liquid 11 Limited |
| +44 1389529 | Protected | — |
| +44 1389530 | Allocated | I.T Communications Limited |
| +44 1389531 | Allocated | Number Services Ltd. |
| +44 1389532 | Allocated | 24 Seven Cloud Communications Ltd |
| +44 1389533 | Protected | — |
| +44 1389534 | Allocated | IP Voice Networks Ltd |
| +44 1389535 | Allocated | Adepteo Limited |
| +44 1389536 | Allocated | Zapappi Ltd |
| +44 1389537 | Allocated | EVE CONNECT LTD |
| +44 1389538 | Allocated | Fuse 2 Communications Ltd |
| +44 1389539 | Allocated | Alnitak GmbH |
| +44 1389540 | Allocated | Dial 9 Communications Limited |
| +44 1389541 | Allocated | Sky UK Limited |
| +44 1389542 | Allocated | BT |
| +44 1389543 | Free | — |
| +44 1389544 | Allocated | Lanonyx Telecom Limited |
| +44 1389545 | Allocated | KCOM Group Ltd |
| +44 1389546 | Free | — |
| +44 1389547 | Free | — |
| +44 1389548 | Allocated | Colt Technology Services |
| +44 1389549 | Allocated | DIDWW Ireland Limited |
| +44 1389550 | Allocated | VOXYONDER NETWORK SERVICES UK LTD |
| +44 1389551 | Allocated | Bink Networks Ltd |
| +44 1389552 | Free | — |
| +44 1389553 | Free | — |
| +44 1389554 | Free | — |
| +44 1389555 | Allocated | ICUK Computing Services Limited |
| +44 1389556 | Free | — |
| +44 1389557 | Allocated | SiPalto Ltd |
| +44 1389558 | Allocated | Belgacom International Carrier Services SA |
| +44 1389559 | Allocated | Mi Telecom Limited |
| +44 1389560 | Protected | — |
| +44 1389561 | Protected | — |
| +44 1389562 | Protected | — |
| +44 1389563 | Protected | — |
| +44 1389564 | Protected | — |
| +44 1389565 | Protected | — |
| +44 1389566 | Protected | — |
| +44 1389567 | Protected | — |
| +44 1389568 | Protected | — |
Related lookups
- 01475 Greenock12 km away
- 01436 Helensburgh12 km away
- 01505 Johnstone13 km away
- 01360 Killearn16 km away
- BT14 allocated blocks on 01389
- Vodafone Ltd (C&W)12 allocated blocks on 01389
- Sky UK Limited6 allocated blocks on 01389
- 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 01389
Where is area code 01389?
01389 is Ofcom's Dumbarton numbering area, in West Dunbartonshire, Scotland. Its exchange town is in West Dunbartonshire. From abroad, drop the 0 and dial +44 1389.
Do I need to dial 01389 for a local call?
Traditionally not from another 01389 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01389 first always works, and mobiles always need it.
How are 01389 numbers written?
Numbers on 01389 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01389 234 567. From abroad the leading zero is dropped: +44 1389 then the local number.
What was the 01389 area code before?
01389 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 0389. Old signage or stationery showing 0389 refers to the same Dumbarton numbers.
Which phone companies hold 01389 numbers?
Ofcom lists 95 providers with allocated blocks on 01389. The largest are BT with 14 of the 133 allocated blocks, Vodafone with 12 of the 133 allocated blocks and Sky UK Limited with 6 of the 133 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 01389?
By distance between exchange towns, the nearest other codes are 01475 Greenock (12 km), 01436 Helensburgh (12 km), 01505 Johnstone (13 km) and 01360 Killearn (16 km).
How do I report a scam call from a 01389 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.