Corporate and VoIP numbers

055557 corporate & VoIP numbers

Ofcom’s numbering data lists 10 number ranges starting 055557, allocated to 1 provider. 055 numbers are used for corporate networks; 056 numbers are location-independent numbers often used by internet (VoIP) phone services.

Number type
Corporate and VoIP numbers
055 / 056
From abroad
+44 55557…
Drop the 0, add +44
Ofcom ranges
10
0 allocated
First allocated
—
1 provider

What a 055557 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.

The range holder isn’t necessarily the caller. Ofcom gives numbers to providers in blocks, and people and businesses can take their number with them when they switch. To find out who actually called, check the full number.
Questions

055557 numbers: common questions

Who owns 055557 numbers?

Ofcom allocated the ranges starting 055557 to Network Rail Infrastructure Limited. 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 055557 number from abroad?

Replace the leading 0 with +44. For example, a number starting 055557 becomes +44 55557 followed by the rest of the number.

How much does it cost to call a 055557 number?

Costs vary by provider – check your tariff.

Is a call from a 055557 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 055557 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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