Dialling code
01903
Area
Worthing
Number type
Geographic landline (01/02)
Local format
01903 XXXXXX
From abroad
+44 1903 XXXXXX
Ofcom number blocks
388
Blocks in service
219
Range holders
105

Where is the 01903 area code?

The 01903 dialling code is the UK geographic area code for Worthing. Because 01903 is a geographic (01/02) code, a number using it is tied to the Worthing dialling-code area — though with modern hosted telephony (VoIP) a business can keep a 01903 number after moving premises, so the code reflects the number’s designated area rather than a guaranteed physical location today.

Ofcom currently lists 388 number blocks under 01903, of which 219 are allocated to 105 communications providers.

Worthing phone number format

A Worthing 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 01903 XXXXXX (the Xs stand for the local digits). Ofcom has not reserved a fictitious drama range for 01903; for on-screen examples it recommends the unused 01632 96000001632 960999 range.

Who holds 01903 number ranges?

Ofcom allocates 01903 numbers to providers in blocks. These providers hold the largest allocations under 01903:

Range holder (allocated by Ofcom)Number blocksExample range
BT3301903 20XXXX
Gamma Telecom Holdings Limited1601903 25XXXX
TalkTalk Communications Limited1201903 297XXX
Sky UK Limited1001903 386XXX
Vodafone Ltd (C&W)1001903 321XXX
Colt Technology Services701903 801XXX
Magrathea Telecommunications Limited701903 860XXX
Virgin Media Limited601903 52XXXX

…and 97 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.

01903 number ranges

Browse the allocated 01903 ranges by their first local digit — each guide lists the providers holding that slice of Worthing’s numbers:

Call charges for 01903 numbers

Calls to 01903 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 01903 scam calls

Fraudsters frequently spoof local dialling codes, faking the caller ID so a scam call appears to come from a Worthing (01903) number you might trust. Remember:

  • A familiar 01903 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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