-Translation- AIS-CP 019/2006 February 2, 2006 Subject: Report on the results of the exercise of warrants (ESOP Grant I, II, III) in January 2006. To: The President The Stock Exchange of Thailand Advanced Info Service Public Company Limited ("the Company") issued and offered the warrants to purchase the Company's ordinary shares to directors and employees of the Company (ESOP). The details of Warrants are as follows: Details of ESOP Grant I Grant II Grant III The number of warrants (units) 14,000,000 8,467,200 8,999,500 Issuing Date March 27,2002 May 30,2003 May 31,2004 Exercise Price (Baht/Share) 46.160 41.741 89.435 Exercise Ratio 1:1.03927 1:1.03927 1:1.02633 (warrant:common share) Maturity of Warrants 5 years from the issuing date The Company would like to report the results of the exercise of warrants (ESOP Grant I, II, III) in January 2006, as follows: Outstanding of ESOP Grant I Grant II Grant III No. of exercised warrants 618,100 577,600 213,400 in this month (units) No. of remaining unexercised 1,885,500 4,009,500 8,276,300 warrants (units) No. of shares derived from 642,365 600,274 219,017 this exercise (shares) No. of remaining shares reserved 2,008,823 4,202,575 8,407,929 for warrants (shares) Please be informed accordingly. Yours sincerely, -Signed- Mr. Somprasong Boonyachai Director Advanced Info Service Public Company Limited