the consumer to block dialing to 900 numbers. US telephone companies are prohibited from disconnecting local service as a means to force payment for 1 (900) calls. Furthermore, in 2002, AT&T withdrew from billing their customers for the fee structures. This was followed by other companies throughout the decade until 2012, when Verizon, the final hold-out, also withdrew from passing on the charges. Various attempts have been made by vendors to circumvent these protections by using Caribbean or other international numbers outside Federal Communications Commission jurisdiction to bill US telephone subscribers; the former +1 (809) countries were popular as their North American Numbering Plan format numbers look domestic but are not. The 101XXXX dial-around prefixes were also briefly the target of abuse by premium number providers posing as inter-exchange carriers, a practice which has now been stopped. A loophole which allowed US (but not Canadian) providers in toll-free area code 800 to bill for calls by claiming the subscriber agreed to the charges has also been largely closed by more stringent regulation. SMS (texting) also has a feature for premium rate services. They generally do not use 900 numbers, but instead use five-digit and six-digit numbers, shorter than a telephone number. Mexico Premium rate numbers in Mexico are served by Telmex and start with the dialling prefix 01-900, where 01 is the domestic long-distance prefix and 900 is the premium-rate area code. These numbers are usually used for the same purposes as in the United States. Oceania Australia In Australia, premium rate numbers generally begin with the prefix 19, with premium-rate voice services using the prefix 190x. Of these 1900 was the initial prefix and is the most common; since then 1901 and 1902 have also been allocated. The 1901 prefix is specifically reserved for "restricted services", where a user must register with the provider of the service on that number - these can include services of a sexual nature, although this is not the only definition of "restricted". The prefix 1906 is reserved for premium-rate paging services. Other numbers beginning with 19 are generally used for premium rate short message service (SMS) services on mobile phones. These were originally trialled using the 188 prefix. Previously (before the introduction of eight digit numbering), the prefix 0055 was used for this purpose, and as a result 190x numbers are occasionally referred to colloquially as 0055 numbers (pronounced double-oh, double-five). The first