Area Code +30-21-(03540000...03549999) 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 : 03540000 Subscriber Number To : 03549999 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-(03530000...03539999) next › : +30-21-(03550000...03559999) Dialling Instructions For trunk calls: - 21 03540000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 30 21 03540000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 03540000 ~ 03549999 (Count: 10,000) Example: +30-21-03540000 / 0030-21-03540000 (021-03540000 / 0-21-03540000) +30-21-03540001 / 0030-21-03540001 (021-03540001 / 0-21-03540001) +30-21-03540002 / 0030-21-03540002 (021-03540002 / 0-21-03540002) +30-21-03540003 / 0030-21-03540003 (021-03540003 / 0-21-03540003) +30-21-03540004 / 0030-21-03540004 (021-03540004 / 0-21-03540004) ...+30-21-xxxxxxxx / 0030-21-xxxxxxxx (021-xxxxxxxx / 0-21-xxxxxxxx) ...+30-21-03549995 / 0030-21-03549995 (021-03549995 / 0-21-03549995) +30-21-03549996 / 0030-21-03549996 (021-03549996 / 0-21-03549996) +30-21-03549997 / 0030-21-03549997 (021-03549997 / 0-21-03549997) +30-21-03549998 / 0030-21-03549998 (021-03549998 / 0-21-03549998) +30-21-03549999 / 0030-21-03549999 (021-03549999 / 0-21-03549999)