01833 area code: Barnard Castle
01833 is the UK dialling code for Barnard Castle, in County Durham, England. Numbers are 01833 followed by 6 digits.
- Area
- Barnard Castle
- Where
- County Durham, England
- Written as
- 01833 xxxxxx
- Digits in a full number
- 11, including the 0
- Calling from abroad
- +44 1833 xxxxxx
- Phone companies holding ranges
- 85 (Ofcom allocation data). This doesn’t show which company a particular number is with, or who uses it.
Where 01833 is
Barnard Castle is a town in County Durham, England.
Could it be someone you know?
A number showing 01833 might look familiar. Check the full number before trusting the caller. It can help to think whether you know someone in or around Barnard Castle, Richmond or Stanhope and Bishop Auckland, have used a business there, booked or applied for something nearby, or are expecting a callback.
Codes near Barnard Castle
Straight-line distance from Barnard Castle.
Does 01833 tell me who called?
No. 01833 is assigned to Barnard Castle, but that doesn’t prove who is calling or where they are. Caller ID can be faked, a number keeps its code when it moves provider, and 85 phone companies hold ranges of 01833 numbers. Search the full number to see what people have reported about it and which phone company its range was given to.
Caller says they’re your bank, HMRC, the police or a courier? Hang up and call a number you trust, from your card, a letter or their website, or dial 159 for most UK banks.
Reported 01833 numbers
Nobody has reported an 01833 number to us yet. If one has been calling you, report it so the next person sees it.
Codes, code lengths and provider counts from Ofcom’s numbering data, downloaded 23 September 2026. Places from Wikidata. All UK area codes · Who called me? · Stop spam calls