How much does it cost to call a 01403 number?

Calls to 01403 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 01403 number — is it a scam?

Not necessarily, but be careful: scammers spoof local codes such as 01403 so a call looks like it’s from Horsham 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 Horsham number from abroad?

Drop the leading 0 and add +44. A number written as 01403 XXXXXX becomes +44 1403 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.

01403 Area Code – Horsham | Dialling Code, Format & Call Charges

Q: Where is the 01403 area code?

01403 is the UK geographic dialling code for Horsham. Any number written as 01403 XXXXXX is tied to the Horsham dialling-code area, though with modern VoIP a business can keep its 01403 number after moving away.

Dialling code: 01403
Area: Horsham
Number type: Geographic landline (01/02)
Local format: 01403 XXXXXX
From abroad: +44 1403 XXXXXX
Ofcom number blocks: 460
Blocks in service: 174
Range holders: 100

Where is the 01403 area code?

The 01403 dialling code is the UK geographic area code for Horsham. Because 01403 is a geographic (01/02) code, a number using it is tied to the Horsham dialling-code area — though with modern hosted telephony (VoIP) a business can keep a 01403 number after moving premises, so the code reflects the number’s designated area rather than a guaranteed physical location today.

Ofcom currently lists 460 number blocks under 01403, of which 174 are allocated to 100 communications providers.

Horsham phone number format

A Horsham 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 01403 XXXXXX (the Xs stand for the local digits). Ofcom has not reserved a fictitious drama range for 01403; for on-screen examples it recommends the unused 01632 960000–01632 960999 range.

Who holds 01403 number ranges?

Ofcom allocates 01403 numbers to providers in blocks. These providers hold the largest allocations under 01403:

Range holder (allocated by Ofcom)	Number blocks	Example range
BT	26	`01403 21XXXX`
Vodafone Ltd (C&W)	18	`01403 03XXXX`
Gamma Telecom Holdings Limited	8	`01403 33XXXX`
Sky UK Limited	8	`01403 372XXX`
TalkTalk Communications Limited	5	`01403 451XXX`
Colt Technology Services	4	`01403 456XXX`
GCI Network Solutions Limited	3	`01403 39XXXX`
Resilient Limited	3	`01403 490XXX`

…and 92 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.

01403 number ranges

Browse the allocated 01403 ranges by their first local digit — each guide lists the providers holding that slice of Horsham’s numbers:

01403 0XXXXX · 1 ranges 01403 2XXXXX · 9 ranges 01403 3XXXXX · 16 ranges 01403 4XXXXX · 42 ranges 01403 5XXXXX · 37 ranges 01403 6XXXXX · 23 ranges 01403 7XXXXX · 11 ranges 01403 8XXXXX · 18 ranges 01403 9XXXXX · 17 ranges

Call charges for 01403 numbers

Calls to 01403 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 01403 scam calls

Fraudsters frequently spoof local dialling codes, faking the caller ID so a scam call appears to come from a Horsham (01403) number you might trust. Remember:

A familiar 01403 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:

01398 Dulverton Area code guide 01400 Honington Area code guide 01404 Honiton Area code guide 01405 Goole Area code guide

Browse all UK area-code guides ›

Run mobiles for a business? See our business mobile network comparison or get a quote.

01403 area code – Horsham