05555 corporate & VoIP numbers
Ofcom’s numbering data lists 100 number ranges starting 05555, allocated to 6 providers. The largest holder is Network Rail Infrastructure Limited, with 30% of them. 055 numbers are used for corporate networks; 056 numbers are location-independent numbers often used by internet (VoIP) phone services.
Who were 05555 ranges given to?
Providers Ofcom allocated these number ranges to.
- Not allocated to a provider63 ranges
- Network Rail Infrastructure Limited30 ranges
- Flextel Limited3 ranges
- Nationwide Telephone Assistance Ltd1 range
- CFL Communications Ltd1 range
- 24 Seven Communications Limited1 range
- Andrews & Arnold Ltd1 range
Range status
How Ofcom lists the ranges starting 05555.
Allocations by year
Explore by the next digit
Each block below starts 05555. Pick one to narrow it down.
What a 05555 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.
05555 numbers: common questions
Who owns 05555 numbers?
Ofcom allocated the ranges starting 05555 to Network Rail Infrastructure Limited, Flextel Limited, Nationwide Telephone Assistance Ltd 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 05555 number from abroad?
Replace the leading 0 with +44. For example, a number starting 05555 becomes +44 5555 followed by the rest of the number.
How much does it cost to call a 05555 number?
Costs vary by provider – check your tariff.
Is a call from a 05555 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 05555 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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