Area Code +39-0789-(172...172999) located in Olbia, Olbia-Tempio (OL), more detail is as below. Place International Dialing Code : 39 International Prefix : 00 National Destination Code : 0789 Subscriber Number From : 172 Subscriber Number To : 172999 National Destination Code Length : 4 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : FastWeb S.p.A. Click here to buy Italy Area Code Database Other Information Language Code : it (Italian) Country Number : 380 (Italy) Country Code : IT (Italy) Region Code : OL Region Name : Olbia-Tempio City : Olbia Timezone : Europe/Rome Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 6 Latitude : 40.9200 Longitude : 9.4900 ‹ previous : +39-0789-(171...171999) next › : +39-0789-(173...173999) Dialling Instructions For trunk calls: - 0789 172 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 39 0789 172 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 172 ~ 172999 (Count: 172,828) Example: +39-0789-000172 / 0039-0789-000172 (0789-000172 / -0789-000172) +39-0789-000173 / 0039-0789-000173 (0789-000173 / -0789-000173) +39-0789-000174 / 0039-0789-000174 (0789-000174 / -0789-000174) +39-0789-000175 / 0039-0789-000175 (0789-000175 / -0789-000175) +39-0789-000176 / 0039-0789-000176 (0789-000176 / -0789-000176) ...+39-0789-xxxxxx / 0039-0789-xxxxxx (0789-xxxxxx / -0789-xxxxxx) ...+39-0789-172995 / 0039-0789-172995 (0789-172995 / -0789-172995) +39-0789-172996 / 0039-0789-172996 (0789-172996 / -0789-172996) +39-0789-172997 / 0039-0789-172997 (0789-172997 / -0789-172997) +39-0789-172998 / 0039-0789-172998 (0789-172998 / -0789-172998) +39-0789-172999 / 0039-0789-172999 (0789-172999 / -0789-172999)