Calls from 055 5588 XXXX
Block 055 5588 XXXX is allocated by Ofcom to Network Rail Infrastructure Limited, on the UK Corporate exchange (allocated 2005).
055 5588 XXXX is a UK geographic number block, UK. Standard landlines in this area use the format 0555 588 1234, with the first part being the dialling code and the rest being the local number.
This block — 055 5588 XXXX — was allocated by Ofcom to Network Rail Infrastructure Limited in 2005. Network Rail Infrastructure Limited either operates the numbers directly or sub-allocates them to resellers and downstream carriers, which is why a single 055 5588 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 calls from blocks like 055 5588 XXXX are actually one-ring 'wangiri' calls — the line rings once and disconnects, hoping you'll call back. While wangiri is more common from foreign numbers, UK number-spoofing means 055 5588 XXXX-style ringbacks are not unheard of. Don't return missed calls from unknown numbers without checking them first.
If a 055 5588 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 055 5588 XXXX
Is 055 5588 XXXX a real UK phone number?
Yes. 055 5588 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 Network Rail Infrastructure Limited for use on the UK public telephone network.
Who owns the 055 5588 XXXX number block?
055 5588 XXXX is currently allocated to Network Rail Infrastructure 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 055 5588 XXXX number based?
055 5588 XXXX is associated with UK Corporate. UK geographic numbers historically indicated the location of the line, although VoIP services and number-portability rules mean a 055 5588 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 055 5588 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 055
Try a different block within the same UK area code:
