UK telephone area code 0114 (international: +44 114) is Sheffield. A number beginning with 0114 248 is most likely a BT landline in Mosborough. However, with number portability, any specific 0114 number might be located anywhere in the greater Sheffield 0114 zone, served by any local telephone company.
(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.)
The country code for the UK is +44.From Ireland, dial 0044 then the full UK telephone number minus any leading zero. For example, you would dial the UK number 0114 496 0018 as 00 44 114 496 0018.If you are ringing a landline telephone in Sheffield but only have the seven-digit local number, you will need to add on Sheffield's area code, which is 0114. So, to dial Sheffield 496 0018, you would dial 00 44 114 496 0018
Telephone country code +40 is Romania, and a number beginning with +40 343 is probably in Ialomita. Calling from North America (USA, Canada, etc.), the number would be dialed beginning with 011-40-343-etc. (011 is the international dialing prefix for outbound calls from North America). The other possibility is that 011 is a domestic area code or part of one. For example, in the UK, 0114 is the area code for Sheffield, and there are some "national dialling only" numbers that begin with 0114 0. In South Africa, 011 is one of the area codes for Johannesburg.
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.