Area Code +61-2-(55121000...55122999) located in Castle Rock, New South Wales (NSW), more detail is as below. Place International Dialing Code : 61 International Prefix : 0011 National Prefix : 0 National Destination Code : 2 Subscriber Number From : 55121000 Subscriber Number To : 55122999 National Destination Code Length : 1 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Optus Mobile Pty Limited Click here to buy Australia Area Code Database Other Information Language Code : en (English) Country Number : 36 (Australia) Country Code : AU (Australia) Region Code : NSW Region Name : New South Wales City : Castle Rock Timezone : Australia/Sydney Coordinated Universal Time : +10:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : -32.2600 Longitude : 150.7300 ‹ previous : +61-2-(55119000...55120999) next › : +61-2-(55123000...55124999) Dialling Instructions For trunk calls: 0 2 55121000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 0011 61 2 55121000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 55121000 ~ 55122999 (Count: 2,000) Example: +61-2-55121000 / 001161-2-55121000 (02-55121000 / 0-2-55121000) +61-2-55121001 / 001161-2-55121001 (02-55121001 / 0-2-55121001) +61-2-55121002 / 001161-2-55121002 (02-55121002 / 0-2-55121002) +61-2-55121003 / 001161-2-55121003 (02-55121003 / 0-2-55121003) +61-2-55121004 / 001161-2-55121004 (02-55121004 / 0-2-55121004) ...+61-2-xxxxxxxx / 001161-2-xxxxxxxx (02-xxxxxxxx / 0-2-xxxxxxxx) ...+61-2-55122995 / 001161-2-55122995 (02-55122995 / 0-2-55122995) +61-2-55122996 / 001161-2-55122996 (02-55122996 / 0-2-55122996) +61-2-55122997 / 001161-2-55122997 (02-55122997 / 0-2-55122997) +61-2-55122998 / 001161-2-55122998 (02-55122998 / 0-2-55122998) +61-2-55122999 / 001161-2-55122999 (02-55122999 / 0-2-55122999)