Editing Cardiff (section)

==Telecommunications==
{{See also|List of Wales dialling codes}}
'''029''' is the current telephone dialling code for Cardiff,<ref name="wales online 02921">{{cite news |last=Malone |first=Sam |url=https://www.walesonline.co.uk/news/local-news/new-029-22-cardiff-telephone-2731565 |title=New phone numbers for Cardiff as first sets of 029 prefixes begin running out |work=Wales Online |date=18 April 2013 |access-date=29 May 2023 }}</ref> as well as for the neighbouring towns of Penarth, Dinas Powys and [[Caerphilly]]. The dialling code is optional when dialling within the area: one can dial between any two phones within the 029 code using only the eight-digit local number.

Prior to the [[Big Number Change]] on 22 April 2000 the area had shorter, six-digit local numbers with an area code of 01222.<ref name="wales online 02921" /> This was 0222 before May 1995, derived from 0 (indicating it was a trunk call), 22 (CA on a telephone pad, for CArdiff) and 2 (as 220 was used for CAmbridge and 221 for BAth). Before the introduction of automated trunk call dialling, non-local numbers were accessed through a system of manual telephone exchanges, in common with rest if the United Kingdom.

There remains a common misconception that local numbers are still six digits long and that the code is 02920, even though there are newer Cardiff numbers in the ranges (029) 21xx xxxx and (029) 22xx xxxx.<ref name="wales online 02921" />