Advanced Info Service (AIS) is the top Thailand mobile telecommunication company with 54% revenue market share. As of December 2011, the Company registered 33.5 million mobile subscribers, representing 44% subscribers market share. With over 21 years of operation, AIS continues to deliver excellent service to Thai community through superior network covered more than 97% nationwide. In addition to the mobile operator business, AIS also have subsidiary companies which are determined to support the core business operation.