<Tr> <Td_colspan="2"> List of United Kingdom dialing codes </Td> </Tr> <P> Telephone numbers in the United Kingdom are administered by the UK government's Office of Communications (Ofcom). For this purpose Ofcom established a telephone numbering plan, known as the National Telephone Numbering Plan, which is the system for assigning telephone numbers to subscriber stations . </P> <P> Since 28 April 2001, almost all geographic numbers and most non-geographic numbers have 9 or 10 national (significant) numbers after the "0" trunk code . All mobile telephone numbers have 10 national (significant) numbers after the "0" trunk code . The overall structure of the UK's National Numbering Plan is: </P> <Table> <Tr> <Th> Prefix </Th> <Th> Service type </Th> </Tr> <Tr> <Th> 01 </Th> <Td> Geographic area codes . </Td> </Tr> <Tr> <Th> 02 </Th> <Td> Geographic area codes (introduced in 2000). </Td> </Tr> <Tr> <Th> 03 </Th> <Td> Non-geographic numbers charged at standard geographic area code rates (introduced 2007). </Td> </Tr> <Tr> <Th> 04 </Th> <Td> Reserved . </Td> </Tr> <Tr> <Th> 05 </Th> <Td> Corporate numbering and VoIP services (some VoIP services use 08 or geographic numbers). Freephone (toll free) on 0500 until June 2017 . </Td> </Tr> <Tr> <Th> 06 </Th> <Td> Was reserved for possible use by personal numbering (PNS) instead of 070 following consumer confusion with mobile phones . </Td> </Tr> <Tr> <Th> 07 </Th> <Td> Mostly for mobile phones on 071xx, 072xx, 073xx, 074xx, 075xx, 07624, 077xx, 078xx, and 079xx . Personal numbering on 070 . Pagers on 076xx . </Td> </Tr> <Tr> <Th> 08 </Th> <Td> Freephone (toll free) on 080, and Special Services (formerly known as local and national rate) on 084 and 087 . </Td> </Tr> <Tr> <Th> 09 </Th> <Td> Premium Rate services (PRS). </Td> </Tr> </Table>

How many digits do uk phone numbers have
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