Where is telephone area code 0218?

0218 may be a valid domestic area code in a variety of countries.

There is no area code 0218 in the UK.

Country code +218 (but not +0218) is Libya. Country codes never begin with zero.

(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.)