Mobile
07755 Mobile numbers UK
07755 is a UK mobile range. In the latest Ofcom data the 07755 blocks are allocated to Core Communication Services Limited. Calls and texts to 07755 numbers are charged at your standard mobile rate.
400,000 of the million 07755 numbers are allocated, the first in 2009.
07755 at a glance
- Number type
- UK mobile, standard rate (not premium, not a landline)
- Numbers allocated
- 400,000 of 1,000,000 (40%)
- Providers
- Core Communication Services Limited 400,000 numbers since 2009
- Big four networks
- None: every range is held by a smaller provider
- First issued
- 18 June 2009
- Newest range
- 18 June 2009
- Location
- None: UK mobile numbers aren't tied to a place
Source: Ofcom numbering data, re-imported weekly.
What it costs to call an 07755 number
Standard mobile rate, usually inside call bundles.
- From a mobile
- Normally in inclusive minutes; 3p to 65p a minute outside them
- From a landline
- Often included; otherwise typically 10p to 20p a minute plus a set-up fee (usually 23p)
Source: Ofcom call costs guide (updated 31 January 2025). Ofcom treats these as indicative; your provider sets the final price.
If a 07755 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 Report Fraud online or on 0300 123 2040. Report Fraud replaced Action Fraud on 4 December 2025 for England, Wales and Northern Ireland; in Scotland call Police Scotland on 101.
Who owns a 07755 number?
07755 is not an area code: it is a slice of the national 07 mobile range that Ofcom hands to providers in blocks. The largest holder of 07755 numbers is Core Communication Services Limited. A number can be ported to another network while keeping its digits, so the holder is the original provider rather than necessarily today’s. The person behind a number isn’t public: no legitimate free service can name a stranger from their mobile number. See UK mobile networks by prefix for how blocks are shared out.
Ranges starting with 0775510 on Ofcom's register
| Prefix | Status | Range holder | Allocated |
|---|---|---|---|
| +44 77550 | Protected | — | — |
| +44 77551 | Protected | — | — |
| +44 77552 | Allocated | Core Communication Services Limited | 18 June 2009 |
| +44 77553 | Allocated | Core Communication Services Limited | 18 June 2009 |
| +44 77554 | Allocated | Core Communication Services Limited | 18 June 2009 |
| +44 77555 | Allocated | Core Communication Services Limited | 18 June 2009 |
| +44 77556 | Protected | — | — |
| +44 77557 | Protected | — | — |
| +44 77558 | Protected | — | — |
| +44 77559 | Protected | — | — |
Related lookups
- 07752 numbersNearby UK mobile block
- 07753 numbersNearby UK mobile block
- 07754 numbersNearby UK mobile block
- 07756 numbersNearby UK mobile block
- 07757 numbersNearby UK mobile block
- 07758 numbersNearby UK mobile block
- 07744 numbersAlso mostly Core Communication, 8 ranges
- 07 MobileAll UK mobile blocks
- 0800 Freephone
- 0808 Freephone
- 0345 UK-rate
- 0333 UK-rate
- 0843 Service rate
- How 0800 freephone numbers work in the UKCornerstone guide
- 0808 numbers UK — what they costCornerstone guide
- 0345 numbers explainedCornerstone guide
- 0345 vs 0800: which is cheaper to call?Cornerstone guide
FAQs about 07755
Which network are 07755 numbers on?
Ofcom has allocated 400,000 of the million 07755 numbers (40%) to 1 provider: Core Communication Services Limited (400,000). None of the four big networks (EE, O2, Three, Vodafone) holds any of it. A number can be ported, so its current network may differ.
When were 07755 numbers first issued?
The oldest allocation still on Ofcom's register for 07755 dates from 18 June 2009.
Can I find out who owns a 07755 number?
Ofcom's register names the provider behind each 07755 range, not the person using a number, and UK mobile numbers aren't in any public directory. Enter the full number above to see its range holder and any verdicts or reports about that exact number.
What does it cost to call a 07755 number?
It's a standard UK mobile number: calls are normally in inclusive minutes, and Ofcom's call costs guide puts calls outside a bundle at 3p to 65p a minute from a mobile and typically 10p to 20p a minute from a landline.
How do I report a 07755 number?
Copy the number from your recent calls and text it to 7726 (free); forward scam texts to 7726 too. If you lost money, call your bank and report it to Report Fraud on 0300 123 2040 (Police Scotland on 101 in Scotland). Register with the Telephone Preference Service to cut sales calls.