How much does it cost to call a 01833 number?

Calls to 01833 numbers are standard geographic landline calls, charged at your provider’s normal UK landline rate and usually included in inclusive minutes — the same as calling an 03 number.

I had a missed call from a 01833 number — is it a scam?

Not necessarily, but be careful: scammers spoof local codes such as 01833 so a call looks like it’s from Barnard Castle and you’re more likely to answer. If in doubt, hang up and call the organisation back on a number you find independently.

How do I dial a Barnard Castle number from abroad?

Drop the leading 0 and add +44. A number written as 01833 XXXXXX becomes +44 1833 XXXXXX when dialled internationally.

Can this tool tell me who owns the number?

No. It shows the area of the dialling code and the provider Ofcom allocated the number range to — not the individual or business holding a specific number, which may also have been ported to another network.

01833 Area Code – Barnard Castle | Dialling Code, Format & Call Charges

Q: Where is the 01833 area code?

01833 is the UK geographic dialling code for Barnard Castle. Any number written as 01833 XXXXXX is tied to the Barnard Castle dialling-code area, though with modern VoIP a business can keep its 01833 number after moving away.

Dialling code: 01833
Area: Barnard Castle
Number type: Geographic landline (01/02)
Local format: 01833 XXXXXX
From abroad: +44 1833 XXXXXX
Ofcom number blocks: 424
Blocks in service: 106
Range holders: 87

Where is the 01833 area code?

The 01833 dialling code is the UK geographic area code for Barnard Castle. Because 01833 is a geographic (01/02) code, a number using it is tied to the Barnard Castle dialling-code area — though with modern hosted telephony (VoIP) a business can keep a 01833 number after moving premises, so the code reflects the number’s designated area rather than a guaranteed physical location today.

Ofcom currently lists 424 number blocks under 01833, of which 106 are allocated to 87 communications providers.

Barnard Castle phone number format

A Barnard Castle 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 01833 XXXXXX (the Xs stand for the local digits). Ofcom has not reserved a fictitious drama range for 01833; for on-screen examples it recommends the unused 01632 960000–01632 960999 range.

Who holds 01833 number ranges?

Ofcom allocates 01833 numbers to providers in blocks. These providers hold the largest allocations under 01833:

Range holder (allocated by Ofcom)	Number blocks	Example range
GCI Network Solutions Limited	11	`01833 330XXX`
BT	8	`01833 35XXXX`
Fuse 2 Communications Ltd	2	`01833 531XXX`
TalkTalk Communications Limited	2	`01833 908XXX`
(AQ) LIMITED	1	`01833 85XXXX`
24 Seven Cloud Communications Ltd	1	`01833 541XXX`
API Telecom Limited	1	`01833 312XXX`
AQL Wholesale Ltd	1	`01833 20XXXX`

…and 79 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.

01833 number ranges

Browse the allocated 01833 ranges by their first local digit — each guide lists the providers holding that slice of Barnard Castle’s numbers:

01833 2XXXXX · 9 ranges 01833 3XXXXX · 36 ranges 01833 4XXXXX · 8 ranges 01833 5XXXXX · 33 ranges 01833 6XXXXX · 8 ranges 01833 8XXXXX · 9 ranges 01833 9XXXXX · 3 ranges

Call charges for 01833 numbers

Calls to 01833 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 01833 scam calls

Fraudsters frequently spoof local dialling codes, faking the caller ID so a scam call appears to come from a Barnard Castle (01833) number you might trust. Remember:

A familiar 01833 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:

01830 Kirkwhelpington Area code guide 01832 Clopton Area code guide 01834 Narberth Area code guide 01835 St Boswells Area code guide

Browse all UK area-code guides ›

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01833 area code – Barnard Castle