Best guess is that's a number in UK domestic format, in which case it's a personal "follow-me" number that can be forwarded to almost anywhere in the world. UK 07010 becomes +44 7010 in international format.
(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.)
In what country?
Portugal
Country code +65 is Singapore.
Country code +358 is Finland.
No, the dialling code for Switzerland is +41.
90 is the dialling code for Turkey
221 is the international dialling code for the country of Senegal.
code 0700 means that the transmission computer also has a code that needs checked,
Luton's dialling code is 01582.
ISO country code: CH Internet country code: .ch Vehicle registration code: CH Aircraft registration code: HB International telephone dialling code: +41
+353 (Irish country code) (0)56 (Kilkenny local dialling code)
567218 is not a dialling code from the UK, which all start with zero. The dialling code for Glasgow, Scotland is 0141.