Calls from 0900 403 XXXX
Block 0900 403 XXXX is allocated by Ofcom to Vodafone, on the UK Premium rate exchange (allocated 2013).
0900 403 XXXX is part of the UK premium-rate / service-charge range. Calls to numbers in this range — such as 0900 403 1234 — incur a service charge in addition to your provider's standard access charge. Ofcom and the regulator PSA cap these charges and require the service charge to be disclosed up-front in any advertising.
This block — 0900 403 XXXX — was allocated by Ofcom to Vodafone in 2013. Vodafone either operates the numbers directly or sub-allocates them to resellers and downstream carriers, which is why a single 0900 403 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.
Some 0900 403 XXXX calls are silent — your phone rings, you answer, and nobody is there. These are usually 'predictive dialler' calls made by call-centres that dialled more numbers than they have agents available to handle. Ofcom rules require any unanswered abandoned call to play a short identifying message; if it doesn't, you can report the caller to Ofcom.
If a 0900 403 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 0900 403 XXXX
Is 0900 403 XXXX a real UK phone number?
Yes. 0900 403 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 Vodafone for use on the UK public telephone network.
Who owns the 0900 403 XXXX number block?
0900 403 XXXX is currently allocated to Vodafone 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 0900 403 XXXX number based?
0900 403 XXXX is associated with UK Premium rate. UK geographic numbers historically indicated the location of the line, although VoIP services and number-portability rules mean a 0900 403 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 0900 403 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 0900
Try a different block within the same UK area code:
