Calls from (028) 82121 XXX — Northern Ireland
Block (028) 82121 XXX is allocated by Ofcom to Zapappi Ltd, on the Northern Ireland exchange (allocated 2018).
(028) 82121 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 8212 1123, with the first part being the dialling code and the rest being the local number.
This block — (028) 82121 XXX — was allocated by Ofcom to Zapappi Ltd in 2018. Zapappi Ltd either operates the numbers directly or sub-allocates them to resellers and downstream carriers, which is why a single (028) 82121 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.
Energy-rebate and 'green grant' scams have been linked to UK landline blocks like (028) 82121 XXX. The caller claims you're eligible for a government rebate or smart-meter grant and pressures you into giving bank details to receive it. Real government rebates apply to your bill automatically — no outbound call is needed.
If a (028) 82121 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) 82121 XXX
Is (028) 82121 XXX a real UK phone number?
Yes. (028) 82121 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 Zapappi Ltd for use on the UK public telephone network.
Who owns the (028) 82121 XXX number block?
(028) 82121 XXX is currently allocated to Zapappi Ltd 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) 82121 XXX number based?
(028) 82121 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) 82121 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) 82121 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:
