055 corporate & VoIP numbers
Ofcom’s numbering data lists 400 number ranges starting 055, allocated to 8 providers. The largest holder is Network Rail Infrastructure Limited, with 8% of them. 055 numbers are used for corporate networks; 056 numbers are location-independent numbers often used by internet (VoIP) phone services.
Who were 055 ranges given to?
Providers Ofcom allocated these number ranges to.
- Not allocated to a provider349 ranges
- Network Rail Infrastructure Limited30 ranges
- BT10 ranges
- Flextel Limited4 ranges
- 24 Seven Communications Limited2 ranges
- CFL Communications Ltd2 ranges
- Andrews & Arnold Ltd1 range
- Nationwide Telephone Assistance Ltd1 range
- Pulsant (Scotland) Limited1 range
Range status
How Ofcom lists the ranges starting 055.
Allocations by year
Explore by the next digit
Each block below starts 055. Pick one to narrow it down.
What a 055 number tells you
What it is
055 numbers are used for corporate networks; 056 numbers are location-independent numbers often used by internet (VoIP) phone services.
What it costs
Costs vary by provider – check your tariff.
Watch out for
Because they are not tied to a place, these numbers say little about where a caller really is.
055 numbers: common questions
Who owns 055 numbers?
Ofcom allocated the ranges starting 055 to Network Rail Infrastructure Limited, BT, Flextel Limited and others. Numbers can be moved between providers, so this shows who the range was originally given to – not who is using a particular number today.
How do I call a 055 number from abroad?
Replace the leading 0 with +44. For example, a number starting 055 becomes +44 55 followed by the rest of the number.
How much does it cost to call a 055 number?
Costs vary by provider – check your tariff.
Is a call from a 055 number a scam?
Because they are not tied to a place, these numbers say little about where a caller really is. Check the full number on Who’s Calling to see if it belongs to a verified business and what other people have reported.
Did a 055 number call you?
Check the full number to see if it belongs to a verified UK business and what other people have reported.
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