Calls from 01903 00 XXXX — Worthing
Block 01903 00 XXXX is allocated by Ofcom to Global Reach Networks Limited, on the Worthing exchange (allocated 2021).
01903 00 XXXX is a number block in Worthing, in the historic county of West Sussex, an area with a population of approximately 111,338. Standard landlines in this area use the format 01903 001234, with the first part being the dialling code and the rest being the local number.
This block — 01903 00 XXXX — was allocated by Ofcom to Global Reach Networks Limited in 2021. Global Reach Networks Limited either operates the numbers directly or sub-allocates them to resellers and downstream carriers, which is why a single 01903 00 XXXX prefix can be used by many different organisations. You can verify any allocation against Ofcom's National Telephone Numbering Plan, which is updated weekly.
A common UK scam pattern uses blocks like 01903 00 XXXX for 'tech support' calls: a caller claims to be from Microsoft, BT, or your antivirus provider, and tries to get you to install remote-access software. No legitimate UK tech-support team will phone you out of the blue and ask to take control of your computer.
If a 01903 00 XXXX number called you and you're not sure who it was, the safest steps are: don't return the call until you've verified it (search the full number online first), don't share personal or financial details, and register the number with the Telephone Preference Service (TPS) if it's a marketing call. Persistent unwanted calls can be reported to Ofcom and the ICO. To block a specific number on most UK mobiles and landlines, you can also enable network-level call screening through your provider.
FAQs about 01903 00 XXXX
Is 01903 00 XXXX a real UK phone number?
Yes. 01903 00 XXXX is part of an Ofcom-allocated UK number block — any number starting with that prefix is a real, dialable UK number assigned by Ofcom to Global Reach Networks Limited for use on the UK public telephone network.
Who owns the 01903 00 XXXX number block?
01903 00 XXXX is currently allocated to Global Reach Networks Limited in Ofcom's National Telephone Numbering Plan. The allocated carrier may operate the numbers directly or sub-allocate them to downstream resellers — both arrangements are normal under UK telecoms rules.
Where is a 01903 00 XXXX number based?
01903 00 XXXX is associated with Worthing. UK geographic numbers historically indicated the location of the line, although VoIP services and number-portability rules mean a 01903 00 XXXX number can technically be used anywhere a CP routes it. For most UK landlines the geographic match still holds.
How do I block calls from 01903 00 XXXX?
On most UK smartphones, open the recent-calls list, tap the number, and choose 'Block this caller'. UK landlines from BT, Sky, TalkTalk and Virgin Media include free 'BT Call Protect'-style screening you can enable in your provider's app. You can also register your number with the Telephone Preference Service (TPS) at tpsonline.org.uk to opt out of legitimate UK marketing calls.
Other blocks in 01903
Try a different block within the same UK area code:
