Calls from (028) 21526 XXX — Northern Ireland
Block (028) 21526 XXX is allocated by Ofcom to INTELLIGENT EXCHANGES LIMITED, on the Northern Ireland exchange (allocated 2026).
(028) 21526 XXX is a number block in Northern Ireland, an area with a population of approximately 1,880,000. Standard landlines in this area use the format 028 2152 6123, with the first part being the dialling code and the rest being the local number.
This block — (028) 21526 XXX — was allocated by Ofcom to INTELLIGENT EXCHANGES LIMITED in 2026. INTELLIGENT EXCHANGES LIMITED either operates the numbers directly or sub-allocates them to resellers and downstream carriers, which is why a single (028) 21526 XXX prefix can be used by many different organisations. You can verify any allocation against Ofcom's National Telephone Numbering Plan, which is updated weekly.
Calls from (028) 21526 XXX sometimes link to 'parcel undelivered' or 'card details expired' courier scams. The caller asks you to confirm a delivery address or re-enter card details on a follow-up SMS link. Real UK couriers (Royal Mail, DPD, Evri) handle these via the apps you signed up to, not by phone.
If a (028) 21526 XXX 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 (028) 21526 XXX
Is (028) 21526 XXX a real UK phone number?
Yes. (028) 21526 XXX 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 INTELLIGENT EXCHANGES LIMITED for use on the UK public telephone network.
Who owns the (028) 21526 XXX number block?
(028) 21526 XXX is currently allocated to INTELLIGENT EXCHANGES 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 (028) 21526 XXX number based?
(028) 21526 XXX is associated with Northern Ireland. UK geographic numbers historically indicated the location of the line, although VoIP services and number-portability rules mean a (028) 21526 XXX 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 (028) 21526 XXX?
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 (028)
Try a different block within the same UK area code:
