Geographic numbers

01923 numbers in Watford

01923 is the area code for Watford. Ofcom’s numbering data lists 415 number ranges starting 01923, allocated to 118 providers. The largest holder is BT, with 10% of them.

Number type
Geographic numbers
01 / 02
Area
Watford
0 area codes
Ofcom ranges
415
301 allocated
First allocated
1994
118 providers

Who were 01923 ranges given to?

Providers Ofcom allocated these number ranges to.

  • Not allocated to a provider114 ranges
  • BT41 ranges
  • Gamma Telecom Holdings Limited30 ranges
  • Virgin Media Limited24 ranges
  • Vodafone Ltd (C&W)21 ranges
  • Sky UK Limited17 ranges
  • GTT-EMEA LTD10 ranges
  • Colt Technology Services9 ranges
  • TalkTalk Communications Limited9 ranges
  • Magrathea Telecommunications Limited8 ranges
  • Voxbone SA4 ranges
  • IOVOX Limited3 ranges

+ 107 more

Range status

How Ofcom lists the ranges starting 01923.

Allocated · 301 Protected · 108 Free · 4 Quarantined · 2

Allocations by year

19942026

What do these statuses mean?

Explore by the next digit

Each block below starts 01923. Pick one to narrow it down.

What a 01923 number tells you

What it is

Ordinary landline numbers tied to a place. The area code tells you which dialling area the number was issued for – 0161 is Manchester, 020 is London, 01388 is Bishop Auckland.

What it costs

Charged as a normal UK call and usually included in landline and mobile allowances.

Watch out for

A local-looking number feels familiar, which is exactly why scammers spoof them. A local area code is not proof the caller is local.

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

01923 numbers: common questions

Who owns 01923 numbers?

Ofcom allocated the ranges starting 01923 to BT, Gamma Telecom Holdings 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 01923 number from abroad?

Replace the leading 0 with +44. For example, a number starting 01923 becomes +44 1923 followed by the rest of the number.

How much does it cost to call a 01923 number?

Charged as a normal UK call and usually included in landline and mobile allowances.

Is a call from a 01923 number a scam?

A local-looking number feels familiar, which is exactly why scammers spoof them. A local area code is not proof the caller is local. 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 01923 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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