Area Code +30-21-(77020000...77029999) located in Athens, Attiki (A1), more detail is as below. Place International Dialing Code : 30 International Prefix : 00 National Prefix : 0 National Destination Code : 21 Subscriber Number From : 77020000 Subscriber Number To : 77029999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : VOICENET Click here to buy Greece Area Code Database Other Information Language Code : el (Greek) Country Number : 300 (Greece) Country Code : GR (Greece) Region Code : A1 Region Name : Attiki City : Athens Timezone : Europe/Athens Coordinated Universal Time : +02:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 37.9800 Longitude : 23.7200 ‹ previous : +30-21-(77010000...77019999) next › : +30-21-(77030000...77039999) Dialling Instructions For trunk calls: - 21 77020000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 30 21 77020000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 77020000 ~ 77029999 (Count: 10,000) Example: +30-21-77020000 / 0030-21-77020000 (021-77020000 / 0-21-77020000) +30-21-77020001 / 0030-21-77020001 (021-77020001 / 0-21-77020001) +30-21-77020002 / 0030-21-77020002 (021-77020002 / 0-21-77020002) +30-21-77020003 / 0030-21-77020003 (021-77020003 / 0-21-77020003) +30-21-77020004 / 0030-21-77020004 (021-77020004 / 0-21-77020004) ...+30-21-xxxxxxxx / 0030-21-xxxxxxxx (021-xxxxxxxx / 0-21-xxxxxxxx) ...+30-21-77029995 / 0030-21-77029995 (021-77029995 / 0-21-77029995) +30-21-77029996 / 0030-21-77029996 (021-77029996 / 0-21-77029996) +30-21-77029997 / 0030-21-77029997 (021-77029997 / 0-21-77029997) +30-21-77029998 / 0030-21-77029998 (021-77029998 / 0-21-77029998) +30-21-77029999 / 0030-21-77029999 (021-77029999 / 0-21-77029999)