Area Code +30-21-(55510000...55519999) 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 : 55510000 Subscriber Number To : 55519999 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 : CYTA HELLAS 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-(55500000...55509999) next › : +30-21-(55550000...55559999) Dialling Instructions For trunk calls: - 21 55510000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 30 21 55510000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 55510000 ~ 55519999 (Count: 10,000) Example: +30-21-55510000 / 0030-21-55510000 (021-55510000 / 0-21-55510000) +30-21-55510001 / 0030-21-55510001 (021-55510001 / 0-21-55510001) +30-21-55510002 / 0030-21-55510002 (021-55510002 / 0-21-55510002) +30-21-55510003 / 0030-21-55510003 (021-55510003 / 0-21-55510003) +30-21-55510004 / 0030-21-55510004 (021-55510004 / 0-21-55510004) ...+30-21-xxxxxxxx / 0030-21-xxxxxxxx (021-xxxxxxxx / 0-21-xxxxxxxx) ...+30-21-55519995 / 0030-21-55519995 (021-55519995 / 0-21-55519995) +30-21-55519996 / 0030-21-55519996 (021-55519996 / 0-21-55519996) +30-21-55519997 / 0030-21-55519997 (021-55519997 / 0-21-55519997) +30-21-55519998 / 0030-21-55519998 (021-55519998 / 0-21-55519998) +30-21-55519999 / 0030-21-55519999 (021-55519999 / 0-21-55519999)