-Translation- AIS-CP 169/2548 December 30, 2005 Subject: Special Holiday To: President The Stock Exchange of Thailand Advanced Info Service Public Company Limited would like to announce details of the Company's special holiday which is different from the Stock Exchange of Thailand's holidays on Tuesday, January 3, 2006 Substitution for New year's day Please be inform accordingly Sincerely Yours, -Signed- Mr.Somprasong Boonyachai Director Advanced Info Service Public Company Limited