Cardiff phone numbers start 029
Cardiff is in Glamorgan, and its landline numbers begin 029.
An 029 number does not prove the caller is in Cardiff
138 phone companies hold 029 ranges, a number keeps its code when it moves provider, and caller ID can be faked outright. The code tells you which exchange the range was allocated to - nothing about who dialled.
- Area code
- 029
- Administrative area
- Glamorgan
- Nation
- Wales
- Population
- 383,536
- This town
- The place 029 is named after
- Phone companies holding ranges
- 138
Numbers reported on 029
Nobody has reported an 029 number to this site yet. That does not mean an 029 number is safe - it means no one has told us about one.
Other places on 029
029 covers more than Cardiff. A call showing this code could have been allocated to a range at any of these exchanges.
Codes near Cardiff
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Buy us a coffeeArea code and range data from Ofcom's published allocations, downloaded 1 October 2026. Town locations, populations and administrative areas from Wikidata (CC0), joined 1 October 2026 - towns within 40 km of the exchange. Reports are from visitors to this site and are unchecked. Browse every town A-Z.