Area Code +30-21-(03660000...03669999) 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 : 03660000 Subscriber Number To : 03669999 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 : OTE S.A 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-(03650000...03659999) next › : +30-21-(03670000...03679999) Dialling Instructions For trunk calls: - 21 03660000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 30 21 03660000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 03660000 ~ 03669999 (Count: 10,000) Example: +30-21-03660000 / 0030-21-03660000 (021-03660000 / 0-21-03660000) +30-21-03660001 / 0030-21-03660001 (021-03660001 / 0-21-03660001) +30-21-03660002 / 0030-21-03660002 (021-03660002 / 0-21-03660002) +30-21-03660003 / 0030-21-03660003 (021-03660003 / 0-21-03660003) +30-21-03660004 / 0030-21-03660004 (021-03660004 / 0-21-03660004) ...+30-21-xxxxxxxx / 0030-21-xxxxxxxx (021-xxxxxxxx / 0-21-xxxxxxxx) ...+30-21-03669995 / 0030-21-03669995 (021-03669995 / 0-21-03669995) +30-21-03669996 / 0030-21-03669996 (021-03669996 / 0-21-03669996) +30-21-03669997 / 0030-21-03669997 (021-03669997 / 0-21-03669997) +30-21-03669998 / 0030-21-03669998 (021-03669998 / 0-21-03669998) +30-21-03669999 / 0030-21-03669999 (021-03669999 / 0-21-03669999)