Dialling code
01883
Area
Caterham
Number type
Geographic landline (01/02)
Local format
01883 XXXXXX
From abroad
+44 1883 XXXXXX
Ofcom number blocks
442
Blocks in service
163
Range holders
93

Where is the 01883 area code?

The 01883 dialling code is the UK geographic area code for Caterham. Because 01883 is a geographic (01/02) code, a number using it is tied to the Caterham dialling-code area — though with modern hosted telephony (VoIP) a business can keep a 01883 number after moving premises, so the code reflects the number’s designated area rather than a guaranteed physical location today.

Ofcom currently lists 442 number blocks under 01883, of which 163 are allocated to 93 communications providers.

Caterham phone number format

A Caterham 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 01883 XXXXXX (the Xs stand for the local digits). Ofcom has not reserved a fictitious drama range for 01883; for on-screen examples it recommends the unused 01632 96000001632 960999 range.

Who holds 01883 number ranges?

Ofcom allocates 01883 numbers to providers in blocks. These providers hold the largest allocations under 01883:

Range holder (allocated by Ofcom)Number blocksExample range
Vodafone Ltd (C&W)1901883 120XXX
BT1101883 30XXXX
Barritel Limited901883 820XXX
Gamma Telecom Holdings Limited801883 770XXX
Magrathea Telecommunications Limited701883 700XXX
Sky UK Limited501883 412XXX
GCI Network Solutions Limited401883 35XXXX
TalkTalk Communications Limited401883 418XXX

…and 85 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.

01883 number ranges

Browse the allocated 01883 ranges by their first local digit — each guide lists the providers holding that slice of Caterham’s numbers:

Call charges for 01883 numbers

Calls to 01883 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 01883 scam calls

Fraudsters frequently spoof local dialling codes, faking the caller ID so a scam call appears to come from a Caterham (01883) number you might trust. Remember:

  • A familiar 01883 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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