- Range holder
- Gamma Telecom Holdings Limited
- Ofcom blocks allocated
- 4,476
- Dialling codes covered
- 598
- Number types held
- 9
- Largest single area
- 020 London
- Data source
- Ofcom numbering data
Who is Gamma Telecom Holdings Limited?
Gamma Telecom Holdings Limited is the name Ofcom records as the range holder for 4,476 UK number blocks. Ofcom publishes which communications provider each block of the national numbering plan was allocated to; it does not publish what those numbers are used for or who uses them, so everything on this page is the footprint, not the customer list.
Their allocation is overwhelmingly geographic landline ranges, spread across 598 of the UK’s 599 dialling codes — the allocation pattern of a national landline or VoIP provider rather than a local one.
Gamma Telecom Holdings Limited’s footprint by number type
| Number type | Allocated blocks |
|---|---|
| Geographic landlines (01/02) | 4,123 |
| Mobile (07) | 24 |
| Personal numbering (070) | 4 |
| UK-wide 03 numbers | 184 |
| Freephone (0800 / 0808) | 43 |
| 084 service numbers | 49 |
| 087 service numbers | 41 |
| 089 service numbers | 1 |
| Premium rate (09) | 7 |
Gamma Telecom Holdings Limited also holds 28 mobile or personal-numbering blocks, so a call or text from an 07 number can come from one of their ranges. UK mobile numbers are ported constantly, though, so the allocation tells you where the range started, not which network the phone is on today.
Where Gamma Telecom Holdings Limited’s landline numbers are
Gamma Telecom Holdings Limited holds geographic (01/02) blocks in 598 dialling-code areas. These are the codes where they hold the most:
| Dialling code | Area | Allocated blocks |
|---|---|---|
020 | London | 213 |
01202 | Bournemouth | 65 |
01273 | Brighton | 59 |
028 | Northern Ireland | 58 |
01224 | Aberdeen | 55 |
01223 | Cambridge | 48 |
01908 | Milton Keynes | 47 |
01865 | Oxford | 44 |
01483 | Guildford | 40 |
01925 | Warrington | 39 |
01782 | Stoke-on-Trent | 34 |
01604 | Northampton | 33 |
…plus smaller allocations in 586 more dialling codes.
Number ranges Gamma Telecom Holdings Limited holds
The ranges where Gamma Telecom Holdings Limited holds the largest allocations. Each one links to a full guide showing every provider in that range:
…and 1,207 more ranges across the numbering plan.
What a call from a Gamma Telecom Holdings Limited range means
If our phone number checker shows Gamma Telecom Holdings Limited for a number, it means Ofcom allocated the block that number sits in to Gamma Telecom Holdings Limited. That is genuinely useful — it tells you the number is a real, allocated UK number of a known type — but three caveats matter:
- It is not the caller. The person or business on the other end is a customer of Gamma Telecom Holdings Limited, or of a reseller buying numbers wholesale from them.
- It may not even be their network any more. Numbers are ported between providers all the time, and Ofcom’s data keeps showing the original allocation.
- Caller ID can be faked. Spoofing lets a fraudster display any number, including one from a Gamma Telecom Holdings Limited range they have nothing to do with.
Ofcom’s data shows the provider each number range was originally allocated to — not who holds an individual number today. Numbers are frequently moved (ported) between providers, and no public database reveals the person or business behind a specific number, so treat any service that claims to with suspicion.
Had an unexpected call from one of these numbers?
Check the number itself rather than the provider name. Our guide to the UK number ranges scammers use covers the patterns worth knowing, and who called me? walks through identifying a caller honestly. Forward scam texts free to 7726, and report scam calls to Action Fraud.
Other UK range holders
Operators with a similar-sized share of the numbering plan:
All UK range holders › · All UK number ranges › · All UK area codes ›