Dialling code
01933
Area
Wellingborough
Number type
Geographic landline (01/02)
Local format
01933 XXXXXX
From abroad
+44 1933 XXXXXX
Ofcom number blocks
433
Blocks in service
172
Range holders
101

Where is the 01933 area code?

The 01933 dialling code is the UK geographic area code for Wellingborough. Because 01933 is a geographic (01/02) code, a number using it is tied to the Wellingborough dialling-code area — though with modern hosted telephony (VoIP) a business can keep a 01933 number after moving premises, so the code reflects the number’s designated area rather than a guaranteed physical location today.

Ofcom currently lists 433 number blocks under 01933, of which 172 are allocated to 101 communications providers.

Wellingborough phone number format

A Wellingborough number is made up of a 5-digit area code followed by a 5 or 6-digit local number. Written in full it looks like 01933 XXXXXX (the Xs stand for the local digits). Ofcom has not reserved a fictitious drama range for 01933; for on-screen examples it recommends the unused 01632 96000001632 960999 range.

Who holds 01933 number ranges?

Ofcom allocates 01933 numbers to providers in blocks. These providers hold the largest allocations under 01933:

Range holder (allocated by Ofcom)Number blocksExample range
BT2001933 22XXXX
Sky UK Limited1201933 327XXX
GCI Network Solutions Limited1101933 200XXX
Vodafone Ltd (C&W)1001933 250XXX
TalkTalk Communications Limited701933 551XXX
Gamma Telecom Holdings Limited601933 42XXXX
GTT-EMEA LTD401933 721XXX
Colt Technology Services301933 718XXX

…and 93 more providers hold smaller allocations in this range.

Ofcom’s data shows the provider each number range was originally allocated to — not who holds an individual number today. Numbers are frequently moved (ported) between providers, and no public database reveals the person or business behind a specific number, so treat any service that claims to with suspicion.

01933 number ranges

Browse the allocated 01933 ranges by their first local digit — each guide lists the providers holding that slice of Wellingborough’s numbers:

Call charges for 01933 numbers

Calls to 01933 geographic numbers are charged at your phone provider’s standard UK landline rate and are normally included in inclusive call minutes. UK-wide 03 numbers are guaranteed by Ofcom to cost the same as 01/02 calls, while 084, 087 and 09 numbers cost considerably more — always check the prefix before you dial.

Spotting spoofed 01933 scam calls

Fraudsters frequently spoof local dialling codes, faking the caller ID so a scam call appears to come from a Wellingborough (01933) number you might trust. Remember:

  • A familiar 01933 area code is not proof the caller is local or genuine — caller ID can be faked.
  • Banks, HMRC and the police will never ask you to move money or share passwords or one-time codes over the phone.
  • If a call feels off, hang up, wait a moment, and call the organisation back on a number from their official website or your statement.
  • Report nuisance calls to the ICO and forward scam texts to 7726 (free).

Other dialling codes in this range

Numerically adjacent UK dialling codes:

Browse all UK area-code guides ›

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