Colt Technology Services phone numbers

Colt Technology Services holds 2,032 blocks of UK phone numbers allocated by Ofcom, the first one in 1996. Numbers from these ranges may be used by Colt Technology Services itself or by its business customers and resellers.

1,705Landline (01, 02)

110UK-wide (03)

24Mobile and personal (07)

33Freephone (080)

63Business rate (084, 087)

88Premium rate (09)

9Other (05 and more)

Main landline areas

020 London (216) 028 Northern Ireland (43) 01223 Cambridge (23) 01483 Guildford (18) 01865 Oxford (17) 01224 Aberdeen (16) 01273 Brighton (14) 01753 Slough (14) 01908 Milton Keynes (14) 01202 Bournemouth (13) 01582 Luton (12) 0161 Manchester (12)

Numbers from Colt Technology Services ranges on WhoCallsYou

We have no numbers from Colt Technology Services ranges yet. Search the number that called you to check who holds its range.

Did a Colt Technology Services number call you?

The range holder is the company Ofcom gave the numbers to. It is often not the caller: many providers sell numbers to call centres, businesses and internet phone services, and numbers can be moved (ported) to another network. Caller ID can also be faked.

To find out more, open the number and read the reports from other people. If the call was a scam, report it to Action Fraud. To stop the calls, see how to block unwanted calls.

Source: Ofcom numbering data, latest allocation 6 Oct 2026.