Telephone numbers in Greece

All dialable numbers are ten digits, except for short codes (3–5 digits in the 1 range), 807-XXXX (seven digits) used for calling card access codes, and numbers in the 5 range, used for routing purposes and not dialable by end-subscribers.

The only two-digit area code is 21 for the Athens Metropolitan area; three-digit codes are used for the cities Thessaloniki, Patras, Larissa, Heraklion, Kavala, and Tripoli.

Thus, many Greeks erroneously think that the area codes include this leading 0.

Subscriber numbers starting with 0 are assigned to the former monopoly OTE.

All geographical codes (21x, 231x) end in a number from 0 to 6 (210 or 212 for Athens, 2310 or 2312 for Thessaloniki).

Numbers whose code ends in "0" are or were originally operated by OTE.

The following defunct short codes were created and provided for free by OTE during its monopoly on the Greek telephony market.

104 - Automobile and Touring Club of Greece (ELPA) Roadside Assistance.

[3] Terminated according to the provisions of the 2002 National Numbering Plan and replaced by multiple 5-digit premium-rate codes.