01529 area code: Sleaford
01529 is the UK dialling code for Sleaford, in North Kesteven, England. Numbers are 01529 followed by 6 digits.
- Area
- Sleaford
- Where
- North Kesteven, England
- Written as
- 01529 xxxxxx
- Digits in a full number
- 11, including the 0
- Calling from abroad
- +44 1529 xxxxxx
- Phone companies holding ranges
- 86 (Ofcom allocation data). This doesn’t show which company a particular number is with, or who uses it.
Where 01529 is
Sleaford is a town in North Kesteven, England.
Could it be someone you know?
A number showing 01529 might look familiar. Check the full number before trusting the caller. It can help to think whether you know someone in or around Sleaford, Honington or Martin, have used a business there, booked or applied for something nearby, or are expecting a callback.
Codes near Sleaford
Straight-line distance from Sleaford.
Does 01529 tell me who called?
No. 01529 is assigned to Sleaford, 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 86 phone companies hold ranges of 01529 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 01529 numbers
Nobody has reported an 01529 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