West Liberty, Ohio, is in area code +1 937, the same as Dayton.
(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 Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
The area code(s) for Toledo, Ohio are 419 and 567.
Mount Vernon, Ohio, is in area code 740.
There are currently 10 area codes in Ohio. When Ohio needs more area codes they will introduce an eleventh area code for the Columbus/Central Ohio area and a twelfth area code for the Cincinnati region.
Feesburg is in area code 937.
A zip code is for a town or a portion of a city. An area code is for a state or part of a state. An area code cannot determine the actual zip code location. The area code for (614) is for a large chunk of Ohio.
Defiance, Ohio, is in area codes 419 and 567 (overlay).
Area code 740. Area code 220 will be added as an overlay in 2015.
Zanesville, Ohio
It depends greatly on where in area code 740 (southeast Ohio) and somewhat on where in area code 513 (Cincinnati area).
The area code 513 covers the southwestern portion of Ohio. This area includes Cincinnati as well as many of the surrounding cities. These cities include Forest Park, Hamilton, Lebanon, West Chester, Mason, Middletown, Norwood, Oxford, Harrison, Cleaves, Miamitown, and Trenton.
The country code and area code of West Sumatra, Indonesia is 62, (0)75.
The country code and area code of West-Terschelling, Netherlands is 31, (0)562.