Range holder · Ofcom numbering snapshot published 23 Sep 2026
Group 3 Technology Limited: Ofcom-listed range holder, not evidence of who called
What does Ofcom list for Group 3 Technology Limited?
Group 3 Technology Limited is listed by Ofcom as the holder of 12 number blocks (111,000 numbers) in the snapshot published 23 Sep 2026, across 10 area codes and 2 number families (geographic, 03). Most of its numbers are in geographic ranges. 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 Group 3 Technology 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 | 12 |
| Allocated (Closed Range) | 0 |
| Quarantined, still listed | 0 |
| Quarantined, no longer listed since 19 Aug 2026 | 0 |
Source: Ofcom numbering data s1.csv, s3.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s1.csv 002caad0, s3.csv 94449a74 · n = 12 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.
Local lookup
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 s1.csv, s3.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s1.csv 002caad0, s3.csv 94449a74 · n = 12 blocks · method: block capacity from number length · release 6d60d6b0 · CSV
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What should I do after an unexpected call?
Group 3 Technology 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 s1.csv, s3.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s1.csv 002caad0, s3.csv 94449a74 · n = 12 blocks · method: block capacity from number length · release 6d60d6b0 · CSV
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Which kinds of numbers does Group 3 Technology Limited hold?
Of the 111,000 numbers listed to Group 3 Technology Limited in the snapshot published 23 Sep 2026, 82.0% are geographic numbers. The chart shows how its own numbers split across number families.
| Family | Numbers | Blocks | Share of this holder's numbers |
|---|---|---|---|
| geographic | 91,000 | 10 | 82.0% |
| 03 | 20,000 | 2 | 18.0% |
Source: Ofcom numbering data s1.csv, s3.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s1.csv 002caad0, s3.csv 94449a74 · n = 12 blocks · method: block capacity from number length · release 6d60d6b0 · CSV
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Which area codes are Group 3 Technology Limited numbers in?
Group 3 Technology Limited holds blocks in 10 UK area codes. The table lists the 10 codes where it holds the most numbers, with the place Ofcom lists for each; the full list is in the CSV.
| Area code | Place | Numbers | Blocks |
|---|---|---|---|
| 0113 | Leeds | 10,000 | 1 |
| 0114 | Sheffield | 10,000 | 1 |
| 0115 | Nottingham | 10,000 | 1 |
| 0121 | Birmingham | 10,000 | 1 |
| 0131 | Edinburgh | 10,000 | 1 |
| 0151 | Liverpool | 10,000 | 1 |
| 0161 | Manchester | 10,000 | 1 |
| 020 | London | 10,000 | 1 |
| 029 | Cardiff | 10,000 | 1 |
| 01922 | Walsall | 1,000 | 1 |
Source: Ofcom numbering data s1.csv, s3.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s1.csv 002caad0, s3.csv 94449a74 · n = 12 blocks · method: block capacity from number length · release 6d60d6b0 · CSV
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Has anything changed in Group 3 Technology Limited’s blocks, and what was allocated recently?
Between the weekly Ofcom files fetched on 19 Aug 2026 and 24 Sep 2026, none of Group 3 Technology Limited’s blocks changed status or holder. No block of Group 3 Technology 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 | 0 |
| 2026-09-16 – 2026-09-24 | 0 |
Source: Ofcom numbering data s1.csv, s3.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s1.csv 002caad0, s3.csv 94449a74 · n = 12 blocks · method: block capacity from number length · release 6d60d6b0 · CSV
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Since when has Group 3 Technology Limited held its number blocks?
The earliest allocation date recorded for Group 3 Technology Limited’s blocks is 2011; 0 of its 12 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 | 12 |
| 2015–2019 | 0 |
| 2020–2024 | 0 |
| 2025–2029 | 0 |
Source: Ofcom numbering data s1.csv, s3.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s1.csv 002caad0, s3.csv 94449a74 · n = 12 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, “Group 3 Technology Limited — Ofcom numbering snapshot published 23 Sep 2026”, release 6d60d6b0, https://rangecheck.co.uk/operators/group-3-technology-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 | s1.csv, s3.csv |
Source: Ofcom numbering data s1.csv, s3.csv, published 23 Sep 2026, fetched 2026-09-24 18:00 UTC, sha256 s1.csv 002caad0, s3.csv 94449a74 · n = 12 blocks · method: block capacity from number length · release 6d60d6b0 · CSV