01665 area code: Alnwick
01665 is the UK dialling code for Alnwick, in Northumberland, England. Numbers are 01665 followed by 6 digits.
- Area
- Alnwick
- Where
- Northumberland, England
- Written as
- 01665 xxxxxx
- Digits in a full number
- 11, including the 0
- Calling from abroad
- +44 1665 xxxxxx
- Phone companies holding ranges
- 89 (Ofcom allocation data). This doesn’t show which company a particular number is with, or who uses it.
Where 01665 is
Alnwick is a town in Northumberland, England.
Could it be someone you know?
A number showing 01665 might look familiar. Check the full number before trusting the caller. It can help to think whether you know someone in or around Alnwick, Rothbury or Bamburgh, have used a business there, booked or applied for something nearby, or are expecting a callback.
Codes near Alnwick
Straight-line distance from Alnwick.
Does 01665 tell me who called?
No. 01665 is assigned to Alnwick, 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 89 phone companies hold ranges of 01665 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 01665 numbers
Nobody has reported an 01665 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