Area Code +31-172-(234000...234999) located in Alphen aan den Rijn, Zuid-Holland (ZH), more detail is as below. Place International Dialing Code : 31 International Prefix : 00 National Prefix : 0 National Destination Code : 172 Subscriber Number From : 234000 Subscriber Number To : 234999 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 : ZH Region Name : Zuid-Holland City : Alphen aan den Rijn Timezone : Europe/Amsterdam Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 52.1300 Longitude : 4.6600 ‹ previous : +31-172-(233000...233999) next › : +31-172-(235000...235999) Dialling Instructions For trunk calls: 0 172 234000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 172 234000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 234000 ~ 234999 (Count: 1,000) Example: +31-172-234000 / 0031-172-234000 (0172-234000 / 0-172-234000) +31-172-234001 / 0031-172-234001 (0172-234001 / 0-172-234001) +31-172-234002 / 0031-172-234002 (0172-234002 / 0-172-234002) +31-172-234003 / 0031-172-234003 (0172-234003 / 0-172-234003) +31-172-234004 / 0031-172-234004 (0172-234004 / 0-172-234004) ...+31-172-xxxxxx / 0031-172-xxxxxx (0172-xxxxxx / 0-172-xxxxxx) ...+31-172-234995 / 0031-172-234995 (0172-234995 / 0-172-234995) +31-172-234996 / 0031-172-234996 (0172-234996 / 0-172-234996) +31-172-234997 / 0031-172-234997 (0172-234997 / 0-172-234997) +31-172-234998 / 0031-172-234998 (0172-234998 / 0-172-234998) +31-172-234999 / 0031-172-234999 (0172-234999 / 0-172-234999)