Area Code +30-21-(55700000...55709999) 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 : 55700000 Subscriber Number To : 55709999 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-(55600000...55609999) next › : +30-21-(60000000...60009999) Dialling Instructions For trunk calls: - 21 55700000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 30 21 55700000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 55700000 ~ 55709999 (Count: 10,000) Example: +30-21-55700000 / 0030-21-55700000 (021-55700000 / 0-21-55700000) +30-21-55700001 / 0030-21-55700001 (021-55700001 / 0-21-55700001) +30-21-55700002 / 0030-21-55700002 (021-55700002 / 0-21-55700002) +30-21-55700003 / 0030-21-55700003 (021-55700003 / 0-21-55700003) +30-21-55700004 / 0030-21-55700004 (021-55700004 / 0-21-55700004) ...+30-21-xxxxxxxx / 0030-21-xxxxxxxx (021-xxxxxxxx / 0-21-xxxxxxxx) ...+30-21-55709995 / 0030-21-55709995 (021-55709995 / 0-21-55709995) +30-21-55709996 / 0030-21-55709996 (021-55709996 / 0-21-55709996) +30-21-55709997 / 0030-21-55709997 (021-55709997 / 0-21-55709997) +30-21-55709998 / 0030-21-55709998 (021-55709998 / 0-21-55709998) +30-21-55709999 / 0030-21-55709999 (021-55709999 / 0-21-55709999)