UK-wide 03 numbers

03703 UK-wide numbers

Ofcom’s numbering data lists 100 number ranges starting 03703, allocated to 17 providers. The largest holder is Vodafone Ltd (C&W), with 12% of them. Non-geographic numbers used by public bodies, charities and businesses that want one number for the whole country. 030 is used by public sector and not-for-profit organisations.

Number type
UK-wide 03 numbers
03
From abroad
+44 3703…
Drop the 0, add +44
Ofcom ranges
100
56 allocated
First allocated
2007
17 providers

Who were 03703 ranges given to?

Providers Ofcom allocated these number ranges to.

  • Not allocated to a provider44 ranges
  • Vodafone Ltd (C&W)12 ranges
  • Alphatalk Limited10 ranges
  • Virgin Media Limited9 ranges
  • Flextel Limited5 ranges
  • Colt Technology Services4 ranges
  • TalkTalk Communications Limited2 ranges
  • TTNC Limited2 ranges
  • GCI Network Solutions Limited2 ranges
  • Magrathea Telecommunications Limited2 ranges
  • Spitfire Network Services Limited1 range
  • 4D Interactive Ltd1 range

+ 6 more

Range status

How Ofcom lists the ranges starting 03703.

Allocated · 56 Protected · 43 Free · 1

Allocations by year

20072024

What do these statuses mean?

Explore by the next digit

Each block below starts 03703. Pick one to narrow it down.

What a 03703 number tells you

What it is

Non-geographic numbers used by public bodies, charities and businesses that want one number for the whole country. 030 is used by public sector and not-for-profit organisations.

What it costs

Never cost more than calling an 01 or 02 number, and count towards inclusive minutes.

Watch out for

Banks and government departments often use 03 numbers, so scammers spoof them. If a caller asks for security details, hang up and call the number on your card or statement.

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

03703 numbers: common questions

Who owns 03703 numbers?

Ofcom allocated the ranges starting 03703 to Vodafone Ltd (C&W), Alphatalk Limited, Virgin Media 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 03703 number from abroad?

Replace the leading 0 with +44. For example, a number starting 03703 becomes +44 3703 followed by the rest of the number.

How much does it cost to call a 03703 number?

Never cost more than calling an 01 or 02 number, and count towards inclusive minutes.

Is a call from a 03703 number a scam?

Banks and government departments often use 03 numbers, so scammers spoof them. If a caller asks for security details, hang up and call the number on your card or statement. 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 03703 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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