07624 (or +44 7624 from overseas) is used for mobile phones from the Isle of Man. This is not actually part of the United Kingdom, although it is a British crown dependency and shares the same telephone dialing code.
Mobile phones in the Isle of Man (and also in the Channel Islands of Jersey and Guernsey) are provided by different companies from the United Kingdom itself (England, Scotland, Wales and Northern Ireland). They are, therefore, charged at different rates to standard UK mobile phone numbers.
A UK telephone number beginning with 07924 (or +44 7924 in international format) is a mobile phone from the Isle of Man. Although the Isle of Man is technically not part of the UK, it is a British crown dependency that shares country code +44, and calls from the UK to the IoM are dialled as domestic calls, although the charging may be different.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
That's a mobile phone number. In international format, it becomes +44 7724.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
07724 is a mobile on O2.
Stanraer
All UK area codes begin with a 0. There is no area code 6010 in the UK, and there is no 06010 code either.
UK area code 020 is London.
There is no area code 20 in the UK
There is no 01134 code in the UK.
The country code and area code of Aberdeen, United Kingdom is 44, (0)1224.
Cambridge is in area code 01223, or +44 1223 from outside the UK.
In the UK, 0121 is the area code for Birmingham.
Until the early 1990's, area code +44 21 (or 021 within the UK) was Birmingham, which is now area code +44 121 (or 0121 within the UK). There has never been an area code +44 217 (or 0217) in the UK.
The area code "029" is assigned to the city Cardiff in Wales, UK.
Slough. There is no 0753 code in the UK.
There is no UK area code like 0491. If the number is pre-1995 then this area code is now 01491 which covers Henley-on-Thames.
UK area code 0161 is Manchester. 0161 644 is an unused prefix.