- Prefix
0800- Number type
- Freephone
- Cost to call
- Free from UK landlines and mobiles
- Geographic
- No – UK-wide
- Ofcom blocks in range
- 7,507
- Blocks in service
- 3,911
- Range holders
- 249
What are 0800 numbers?
Numbers starting 0800 are UK freephone
numbers in Ofcom’s 0800 & 0808 freephone numbers
range. They are not tied to any town or city. Ofcom currently lists
7,507 number blocks under 0800, of which
3,911 are allocated to
249 providers.
Who uses 0800 numbers?
Sales lines, customer service, helplines and donation lines that want to remove any cost barrier to calling.
Who holds 0800 number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| BT | 3,003 | 0800 000 XXXX |
| Vodafone Ltd (C&W) | 103 | 0800 001 4XXX |
| TalkTalk Communications Limited | 63 | 0800 014 2XXX |
| Telecoms World Limited | 46 | 0800 043 XXXX |
| GCI Network Solutions Limited | 36 | 0800 004 2XXX |
| Virgin Media Limited | 31 | 0800 013 XXXX |
| Colt Technology Services | 29 | 0800 058 4XXX |
| Gamma Telecom Holdings Limited | 21 | 0800 007 4XXX |
| Magrathea Telecommunications Limited | 21 | 0800 041 8XXX |
| TTNC Limited | 21 | 0800 118 2XXX |
| Datazero Ltd | 20 | 0800 058 8XXX |
| Nuso Cloud UK Limited | 17 | 0800 117 0XXX |
…and 237 more providers hold smaller allocations in this range.
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.
Scam & cost warnings
A free-to-call number is not proof an organisation is genuine: fake 'support' lines and refund scams use freephone numbers because they look reassuring. Verify the organisation independently before sharing any details.
Check a specific 0800 number
Paste the full number into the checker above to see its range holder and allocation status from this week’s Ofcom data — free, no sign-up.
Run mobiles for a business? See our business mobile network comparison or get a quote.
Related 080 prefixes
0800 & 0808 freephone numbers guide › · All UK number ranges ›