UK area code
029 — Cardiff
The 029 dialling code covers Cardiff in South Wales. Approximate population of the area: 480,000. Below are the currently-allocated Ofcom number ranges and the Range Holders they are assigned to.
About the 029 dialling code
029 is the UK area code for Cardiff and the surrounding South Wales area, listed in Ofcom’s National Telephone Numbering Plan. When a UK landline calls you and the number begins +44 29 the originating exchange is most likely physically located in or near Cardiff. Numbers in this code are allocated to UK communications providers in 1,000- or 10,000-number blocks; the table below shows which Range Holder Ofcom assigned each block to.
This is the same data Ofcom publishes every Wednesday in the public UK Numbering Data feed. We re-ingest the snapshot weekly, so the allocations you see here are at most seven days old. Because UK numbers are portable, the current carrier of any specific number on 029 can differ from the Range Holder shown — see Range Holder vs current provider for the full explanation.
To identify a specific 029 number, paste it into the lookup form above. You will see the Range Holder, the allocation status, the area-code metadata for Cardiff, and a live AI internet check summarising any public web reports about that exact number — useful when an unfamiliar 029 caller turns out to be a legitimate local business, a national contact-centre, or a scam.
Range holders on 029
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All allocated ranges on 029
Showing up to 200 ranges, ordered by prefix.
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Related lookups
FAQs about 029
What does the 029 area code cover?
029 is the UK dialling code for Cardiff and the wider South Wales area. The area has a population of approximately 480,000. When you receive a call starting with 029 from a UK landline, the originating exchange is likely in or near Cardiff.
Is a 029 number safe?
Most calls from 029 are legitimate landlines. Scammers can however spoof any UK area code, so a 029 prefix alone doesn't guarantee safety. Use the lookup above to see the Range Holder, then read the AI internet check for behavioural reports.
How many providers operate 029 number ranges?
Across the 0 ranges currently visible, 0 different Range Holders are listed. The top allocations are typically held by Openreach (BT), Virgin Media O2 and Sky.