Area Code +31-521-(550000...559999) located in Steenwijk, Drenthe (DR), more detail is as below. Place International Dialing Code : 31 International Prefix : 00 National Prefix : 0 National Destination Code : 521 Subscriber Number From : 550000 Subscriber Number To : 559999 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 : DR Region Name : Drenthe City : Steenwijk Timezone : Europe/Amsterdam Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 52.7900 Longitude : 6.1200 ‹ previous : +31-521-(530000...539999) next › : +31-521-(570000...579999) Dialling Instructions For trunk calls: 0 521 550000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 521 550000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 550000 ~ 559999 (Count: 10,000) Example: +31-521-550000 / 0031-521-550000 (0521-550000 / 0-521-550000) +31-521-550001 / 0031-521-550001 (0521-550001 / 0-521-550001) +31-521-550002 / 0031-521-550002 (0521-550002 / 0-521-550002) +31-521-550003 / 0031-521-550003 (0521-550003 / 0-521-550003) +31-521-550004 / 0031-521-550004 (0521-550004 / 0-521-550004) ...+31-521-xxxxxx / 0031-521-xxxxxx (0521-xxxxxx / 0-521-xxxxxx) ...+31-521-559995 / 0031-521-559995 (0521-559995 / 0-521-559995) +31-521-559996 / 0031-521-559996 (0521-559996 / 0-521-559996) +31-521-559997 / 0031-521-559997 (0521-559997 / 0-521-559997) +31-521-559998 / 0031-521-559998 (0521-559998 / 0-521-559998) +31-521-559999 / 0031-521-559999 (0521-559999 / 0-521-559999)