05601 corporate & VoIP numbers
Ofcom’s numbering data lists 100 number ranges starting 05601, allocated to 8 providers. The largest holder is BT, with 22% of them. 055 numbers are used for corporate networks; 056 numbers are location-independent numbers often used by internet (VoIP) phone services.
Who were 05601 ranges given to?
Providers Ofcom allocated these number ranges to.
- Not allocated to a provider67 ranges
- BT22 ranges
- Magrathea Telecommunications Limited5 ranges
- The Excell Group Limited1 range
- Six Degrees Technology Group Limited1 range
- Orange Business Holdings UK Limited1 range
- Andrews & Arnold Ltd1 range
- I.T Communications Limited1 range
- Connect Telecom UK Limited1 range
Range status
How Ofcom lists the ranges starting 05601.
Allocations by year
Explore by the next digit
Each block below starts 05601. Pick one to narrow it down.
What a 05601 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.
05601 numbers: common questions
Who owns 05601 numbers?
Ofcom allocated the ranges starting 05601 to BT, Magrathea Telecommunications Limited, The Excell Group 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 05601 number from abroad?
Replace the leading 0 with +44. For example, a number starting 05601 becomes +44 5601 followed by the rest of the number.
How much does it cost to call a 05601 number?
Costs vary by provider – check your tariff.
Is a call from a 05601 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 05601 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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