The 717 area code serves south central Pennsylvania (places like Lancaster, Harrisburg, York, etc.)
The 717 area code serves parts of sixteen counties in Pennsylvania:
Adams County
Berks County (portions of west)
Chester County (extreme western portion)
Cumberland County
Dauphin County
Franklin County
Fulton County (all except a portion of its NW)
Huntingdon County (Kishacoquillas Valley only)
Juniata County
Lancaster County (all except a portion of its extreme NE)
Lebanon County (all except a portion of its extreme SE)
Mifflin County (all except a portion of its extreme SW)
Perry County
Schuylkill County (Lykens Valley only)
Snyder County (portions of south)
York County
The country code and area code of Atlatlahuca, Mexico is 52, (01)717.
Leichtenstein is telephone country code +423.
where is telephone country code 1816
The country code and area code of Yichang- HB, China is 86, (0)717.
The country code and area code of Colonia Obligado, Paraguay is 595, (0)717.
The country code and area code of El Laaid, Sudan is 249, (0)717.
That is not a country code.
Fiji has telephone country code +679.
Country code +57 is Colombia.
Gibraltar is country code +350.
Moldova is country code +373.
Slovenia is country code +386.