What country has the area code 011518?

Answer 1

011 is not part of the country code or area code, it is the international access prefix for outbound calls from North America (USA, Canada, etc.).

Telephone country code +51 is Peru.

(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.)