Try reach out to this website, mms.mobilelife.co.th/mow/init.do, and you’ll receive an error.
Try http://mobilelife.ais.co.th instead.
Quoted from Wikipedia:
Thailand’s largest mobile operator, AIS was originally granted a 20-year mobile concession by the Telephone Organization of Thailand (TOT) on March 27, 1990. On September 26, 1996, an additional five years were granted whereby extending the concession life to 25 [...]