01603 972574 +44 1603 972574
Landline number from Norwich, range allocated to Colt Technology Services · Also written +44 1603 972574
No reports yetNobody has reported 01603 972574 on Who Calls You yet.
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About 01603 972574
01603 972574 is a UK landline number from Norwich (area code 01603). It sits in the block 01603 972xxx, which Ofcom allocated to Colt Technology Services on 26 March 2020. In the last 30 days it was looked up 3 times on Who Calls You, all in the past week, most recently on Sun 8 Nov. There are no reports about it yet: if it called you, you can be the first to say what the call was about. Calling it back costs the same as a normal UK call. We first listed it on 4 November 2026.
Number details
- UK format
- 01603 972574
- International
- +44 1603 972574
- No spaces
- 01603972574
- No spaces with +44
- +441603972574
- Number type
- Landline
- Location
- Norwich
- Area code
- 01603
- Range allocated to
- Colt Technology Services
Cost to call: Normal rate · Landline (01). A normal UK landline call, included in the minutes of most landline and mobile plans. UK call costs
Landline numbers linked to a town or area. Calls cost the same as a normal UK landline call and are usually included in phone plans.
Network details come from UK numbering allocations. The number may have moved to another provider since, and this does not show who made a call.
Numbers in the same range (01603 972xxx)
01603 972574 is in the number block 01603 972xxx (1,000 numbers), allocated by Ofcom to Colt Technology Services on 26 Mar 2020.
No other numbers from this block are on Who Calls You yet.
Companies and call centres often use numbers from one block, so reports about nearby numbers can be a useful hint. They are not proof about this number: blocks are shared, and numbers can be moved to another provider.
Recent activity
Last 30 days: 3 lookups and 0 reports on Who Calls You.
No reports in the last 30 days.
Reports about 01603 972574
No reports yet. If 01603 972574 called or texted you, your report helps other people decide whether to answer.
Report 01603 972574
What you should do
- Do not share personal or bank details with an unexpected caller. Banks, HMRC and the police never ask for PINs, passwords or one-time codes.
- Do not call back blindly. If the caller claims to be a company, contact it on the number from its official website, your card or a letter. For your bank you can call 159. Should you call back an unknown number?
- Block the number if the calls are unwanted (see below).
- Report it above, and report scams to Action Fraud. Forward scam texts to 7726 for free.
Caller ID can be faked. Scammers can make any number appear on your screen, including real numbers of real businesses or people. A report here is information to help you decide, not proof of who called.
Questions about 01603 972574
Who called me from 01603 972574?
01603 972574 is a UK landline number from Norwich, range allocated to Colt Technology Services. Nobody has reported 01603 972574 on Who Calls You yet. It is also written as +44 1603 972574, 01603972574 or +441603972574. We do not show who owns a number. Caller ID can be faked, so check the reports and never share personal details with a caller you do not know.
Is 01603 972574 a scam?
There are no reports about 01603 972574 yet, so we cannot say. Be careful with unexpected calls asking for money, passwords or bank details, and add a report if this number called you.
How do I block 01603 972574?
On iPhone open Recents, tap the (i) next to the number and choose Block Caller. On Android open the call log, press and hold the number and choose Block. On a landline, ask your provider about free call blocking such as BT Call Protect.