What city in Germany has the code 636?

Answer 1

German telephone area codes beginning with 0636 (or +49 636 in international format) are in the North Palatine Uplands (Nordpfälzer Bergland), but you need one more digit to identify a specific town. For example, 06361 is Rockenhausen.

(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.)