Area Code +33-177-(040000...049999) located in Guyancourt, YVELINES (78), more detail is as below. Place International Dialing Code : 33 International Prefix : 00 National Prefix : 0 National Destination Code : 177 Subscriber Number From : 040000 Subscriber Number To : 049999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : SOCIETE FRANCAISE DU RADIOTELEPHONE Click here to buy France Area Code Database Other Information Language Code : fr (French) Country Number : 250 (France) Country Code : FR (France) Region Code : 78 Region Name : YVELINES City : Guyancourt Timezone : Europe/Paris Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 48.7600 Longitude : 2.0800 ‹ previous : +33-177-(030000...039999) next › : +33-177-(050000...059999) Dialling Instructions For trunk calls: 0 177 040000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 33 177 040000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 040000 ~ 049999 (Count: 10,000) Example: +33-177-040000 / 0033-177-040000 (0177-040000 / 0-177-040000) +33-177-040001 / 0033-177-040001 (0177-040001 / 0-177-040001) +33-177-040002 / 0033-177-040002 (0177-040002 / 0-177-040002) +33-177-040003 / 0033-177-040003 (0177-040003 / 0-177-040003) +33-177-040004 / 0033-177-040004 (0177-040004 / 0-177-040004) ...+33-177-xxxxxx / 0033-177-xxxxxx (0177-xxxxxx / 0-177-xxxxxx) ...+33-177-049995 / 0033-177-049995 (0177-049995 / 0-177-049995) +33-177-049996 / 0033-177-049996 (0177-049996 / 0-177-049996) +33-177-049997 / 0033-177-049997 (0177-049997 / 0-177-049997) +33-177-049998 / 0033-177-049998 (0177-049998 / 0-177-049998) +33-177-049999 / 0033-177-049999 (0177-049999 / 0-177-049999)