those people using VoIP and having all local and national calls free. 1800, 1300 and 13 numbers are reverse charge networks. Other than the length of the number, the differences between a 13 number and a 1300 number is that the shorter number has a higher fee for the owner of the number: there should be no difference in cost to the caller. A call to an 1800 is free when dialled from a landline, and mobile phones since 2014. It depends on the individual mobile plan as how 13 and 1300 numbers are charged: all plans no longer charge for 1800 but 13 and 1300 may still be charged at a high rate, or outside included calls. These numbers "forward" to a geographic or mobile number. The recipient is usually charged at a set rate per second for each call, depending on plan and destination. Premium numbers (19) 190x (not to be confused with 0198) is the prefix for premium rate services (e.g. recorded information, competition lines, psychics, phone sex, etc.). (Prior to the introduction of 8-digit local numbers, the prefix was 0055.) 190 numbers incur a rate as charged by the provider – either at a per-minute rate (limited at $5.50 per minute) or a fixed rate (up to $38.50 per call). The latter method is most often used for fax-back services, where a timed charge is not appropriate. Costs of 190 calls for competitions involving chance are also often limited by state legislation to $0.55 per call. (In the previous numbering plan, 0055 numbers were limited to three bands: Premium Rate, Value Rate and Budget Rate, with per minute rates of $0.75, $0.60 and $0.40 respectively.) Other numbers beginning with 19 are used for premium-rate SMS services. These were originally trialled using the 188 prefix. These can range from a standard SMS cost (usually 25c), up to 55c for competition use, to several dollars for other uses, such as unique bid auctions. International access The main international prefix is 0011. (E.164 international format is supported from phones with the ability to dial the '+' symbol.) There are other codes for using a non-default carrier or a special plan: 0014 will route through the Primus network 0018 will route through the Telstra network 0019 will route through the Optus network Formerly, 0015 would route through Telstra on a special mode for international faxing. Telstra has retired this code.