Where in England has phone code 1215?

Answer 1

121 is the code for Birmingham if calling from overseas. The 5 is the first digit of the rest of the number. The complete number would look like +44 121 5xx xxxx, or 0121 5xx xxxx in domestic 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.)