Area Code +31-544-(390000...399999) located in Groenlo, Gelderland (GE), more detail is as below. Place International Dialing Code : 31 International Prefix : 00 National Prefix : 0 National Destination Code : 544 Subscriber Number From : 390000 Subscriber Number To : 399999 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 : KPN B.V. Click here to buy Netherlands Area Code Database Other Information Language Code : nl (Dutch) Country Number : 528 (Netherlands) Country Code : NL (Netherlands) Region Code : GE Region Name : Gelderland City : Groenlo Timezone : Europe/Amsterdam Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 52.0400 Longitude : 6.6200 ‹ previous : +31-544-(370000...379999) next › : +31-544-(460000...469999) Dialling Instructions For trunk calls: 0 544 390000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 544 390000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 390000 ~ 399999 (Count: 10,000) Example: +31-544-390000 / 0031-544-390000 (0544-390000 / 0-544-390000) +31-544-390001 / 0031-544-390001 (0544-390001 / 0-544-390001) +31-544-390002 / 0031-544-390002 (0544-390002 / 0-544-390002) +31-544-390003 / 0031-544-390003 (0544-390003 / 0-544-390003) +31-544-390004 / 0031-544-390004 (0544-390004 / 0-544-390004) ...+31-544-xxxxxx / 0031-544-xxxxxx (0544-xxxxxx / 0-544-xxxxxx) ...+31-544-399995 / 0031-544-399995 (0544-399995 / 0-544-399995) +31-544-399996 / 0031-544-399996 (0544-399996 / 0-544-399996) +31-544-399997 / 0031-544-399997 (0544-399997 / 0-544-399997) +31-544-399998 / 0031-544-399998 (0544-399998 / 0-544-399998) +31-544-399999 / 0031-544-399999 (0544-399999 / 0-544-399999)