Range holder · Ofcom numbering snapshot published 23 Sep 2026
Twelve Telecom Limited: Ofcom-listed range holder, not evidence of who called
What does Ofcom list for Twelve Telecom Limited?
Twelve Telecom Limited is listed by Ofcom as the holder of 24 number blocks (240,000 numbers) in the snapshot published 23 Sep 2026, across no geographic area codes and 2 number families (08, 09). 15 blocks listed to it at some point since 19 Aug 2026 changed status or holder. Check the number below.
Did not expect the call? Do not call back; contact the organisation on a number you find yourself.
A range holder is usually a network or wholesale provider that supplies numbers to other businesses. This Ofcom listing records an allocation only; it is not evidence about the range holder or caller. A number ported to another network still shows its original range holder here.
If a caller ID shows a Twelve Telecom Limited number and you did not expect the call, do not call back; contact the organisation you think it was on a number you find yourself.
| Status | Blocks |
|---|---|
| Allocated | 24 |
| Allocated (Closed Range) | 0 |
| Quarantined, still listed | 0 |
| Quarantined, no longer listed since 19 Aug 2026 | 12 |
Source: Ofcom numbering data s8.csv, s9.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s8.csv 10b9b165, s9.csv 42682da4 · n = 24 blocks · method: block capacity from number length · release 6d60d6b0 · CSV
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Check the number privately
Enter a number below. The lookup runs privately in your browser and returns the Ofcom block status with a callback rule.
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Enter the number that called
Your full number does not leave this page. A lookup downloads only the relevant four-digit prefix-class file.
| Lookup | Method |
|---|---|
| Ofcom block | Private lookup in this browser |
Source: Ofcom numbering data s8.csv, s9.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s8.csv 10b9b165, s9.csv 42682da4 · n = 24 blocks · method: block capacity from number length · release 6d60d6b0 · CSV
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What should I do after an unexpected call?
Twelve Telecom Limited is the range holder, not necessarily the organisation that called: numbers in its blocks are often used by its business customers.
| Step | Action |
|---|---|
| 1 | Do not call back a number you cannot identify. If it rang once and cut off, that is often a test that your line is live. |
| 2 | If the caller said they were your bank, a company or the police, hang up and phone the organisation on a number you find yourself, or call 159 for your bank. |
| 3 | Forward suspicious text messages to 7726, free of charge. |
| 4 | If you lost money or shared details, contact your bank at once and report to Action Fraud (England, Wales and Northern Ireland) or Police Scotland. |
| 5 | For unwanted marketing calls, report to the ICO and block the number on your phone. |
| 6 | Calls to 01 and 02 numbers are charged at your provider’s standard landline rate (gov.uk/call-charges). |
Source: Ofcom numbering data s8.csv, s9.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s8.csv 10b9b165, s9.csv 42682da4 · n = 24 blocks · method: block capacity from number length · release 6d60d6b0 · CSV
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Which kinds of numbers does Twelve Telecom Limited hold?
Of the 240,000 numbers listed to Twelve Telecom Limited in the snapshot published 23 Sep 2026, 75.0% are 08 numbers. The chart shows how its own numbers split across number families.
| Family | Numbers | Blocks | Share of this holder's numbers |
|---|---|---|---|
| 08 | 180,000 | 18 | 75.0% |
| 09 | 60,000 | 6 | 25.0% |
Source: Ofcom numbering data s8.csv, s9.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s8.csv 10b9b165, s9.csv 42682da4 · n = 24 blocks · method: block capacity from number length · release 6d60d6b0 · CSV
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Which area codes are Twelve Telecom Limited numbers in?
Twelve Telecom Limited holds no geographic (01 or 02) blocks, so it has no area-code footprint; its numbers are in 08, 09 ranges.
| Area code | Place | Numbers | Blocks |
|---|---|---|---|
| No geographic blocks | — | 0 | 0 |
Source: Ofcom numbering data s8.csv, s9.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s8.csv 10b9b165, s9.csv 42682da4 · n = 24 blocks · method: block capacity from number length · release 6d60d6b0 · CSV
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Has anything changed in Twelve Telecom Limited’s blocks, and what was allocated recently?
Between the weekly Ofcom files fetched on 19 Aug 2026 and 24 Sep 2026, 15 blocks listed to Twelve Telecom Limited at some point changed status or holder; a block with several changes counts once. No block of Twelve Telecom Limited has an allocation date in the last 12 months.
Ofcom: “Please note that transferred numbers will also be shown as ‘allocated’.” (numbering data, ofcom.org.uk, retrieved 24 Sep 2026)
| Weekly transition | Changed blocks |
|---|---|
| 2026-08-19 – 2026-08-26 | 0 |
| 2026-08-26 – 2026-09-02 | 0 |
| 2026-09-02 – 2026-09-09 | 0 |
| 2026-09-09 – 2026-09-16 | 12 |
| 2026-09-16 – 2026-09-24 | 3 |
Source: Ofcom numbering data s8.csv, s9.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s8.csv 10b9b165, s9.csv 42682da4 · n = 24 blocks · method: block capacity from number length · release 6d60d6b0 · CSV
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Since when has Twelve Telecom Limited held its number blocks?
The earliest allocation date recorded for Twelve Telecom Limited’s blocks is 2013; 0 of its 24 blocks carry a date from 2020 onwards. Recorded dates are provisional: a block that moved to another provider may show the date of that move rather than its first allocation.
| Recorded years | Allocated blocks |
|---|---|
| 1994–1999 | 0 |
| 2000–2004 | 0 |
| 2005–2009 | 0 |
| 2010–2014 | 21 |
| 2015–2019 | 3 |
| 2020–2024 | 0 |
| 2025–2029 | 0 |
Source: Ofcom numbering data s8.csv, s9.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s8.csv 10b9b165, s9.csv 42682da4 · n = 24 blocks · method: block capacity from number length · release 6d60d6b0 · CSV
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Where do these numbers come from, and how do I cite this page?
Rangecheck, “Twelve Telecom Limited — Ofcom numbering snapshot published 23 Sep 2026”, release 6d60d6b0, https://rangecheck.co.uk/operators/twelve-telecom-limited/, retrieved 24 Sep 2026. Contains Ofcom copyright material: numbering data (ofcom.org.uk).
How to cite · Contains Ofcom copyright material
| Field | Value |
|---|---|
| Release | 6d60d6b0 |
| Source published | 23 Sep 2026 |
| Source fetched | 2026-09-24 18:00 UTC |
| Source files | s8.csv, s9.csv |
Source: Ofcom numbering data s8.csv, s9.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s8.csv 10b9b165, s9.csv 42682da4 · n = 24 blocks · method: block capacity from number length · release 6d60d6b0 · CSV