01603 Phone Numbers — Norwich
01603 is the geographic telephone area code for Norwich and surrounding areas in Norfolk, England. Below you will find community reports for numbers beginning 01603, along with information about who called and whether the number has been flagged as a nuisance caller.
About 01603 numbers
| Prefix | 01603 |
| Area | Norwich |
| Region | Norfolk |
| Country | England |
| Number type | Geographic |
| Description | Geographic — associated with a specific location in the UK |
| UK format | 01603 xxxxxx |
| International | +44 1603 xxxxxx |
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Caller ID can be spoofed
The area code 01603 appearing on your phone does not guarantee the caller is actually in Norwich. Scammers routinely fake (spoof) caller ID to display a local or trusted number. Always verify the identity of any unexpected caller independently before taking action.
Reported numbers starting 01603 (5 found)
🛡️ Staying safe with unexpected calls
- Never share passwords, PINs or one-time codes over the phone — your bank, HMRC, or any legitimate organisation will never ask for these.
- Never send money based on a request from an unexpected caller, even if they claim to be from your bank or the police.
- Hang up and call back using the official number from the organisation's website — not the number that called you and not a number they give you during the call.
- Take your time — genuine callers will not pressure you to make immediate decisions or payments.
- Report scam calls to Action Fraud on 0300 123 2040 or at actionfraud.police.uk, and to Ofcom by texting the number to 7726 (free).