+44 1603 Area Code
The 1603 area code serves Norwich in United Kingdom. Learn the cities covered, time zone, dialing format and how to get a local 1603 business number.
Cities & regions in the 1603 area code (1)
Frequently asked questions
Where is the 1603 area code?+
1603 is an area code in United Kingdom, primarily covering Norwich.
How do I dial 1603 from abroad?+
Dial your country's international exit code, then +44 1603 followed by the local number. From inside United Kingdom, dial 01603 then the local number.
Can I get a 1603 phone number for my business?+
Yes. AstraQom provisions local +44 1603 DID numbers for SIP trunking, hosted PBX and contact centers — usually within minutes, with no long-term contract.
Does a 1603 number work over VoIP?+
Yes. Numbers are delivered over SIP on Tier-1 carriers with full HD voice, fax-over-IP (T.38), CNAM and emergency calling where supported.
Get a local 1603 number for your business
Local presence in seconds. Hosted PBX, SIP trunking and contact-center routing on Tier-1 carriers with 24/7 human support.
United Kingdom uses GMT (UTC) and British Summer Time (BST, UTC+1).
AstraQom is an independent global telecom carrier serving 117 countries. We provision local 1603 United Kingdom DID numbers, SIP trunks, hosted PBX, contact-center routing and SD-WAN — all on Tier-1 carrier infrastructure with no grey termination and 24/7 multilingual support.