-Translation- AIS-CP 047/2006 April 4, 2006 Subject: Report on the results of the exercise of warrants (ESOP Grant I, II, III) in March 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) 45.324 40.985 87.816 Exercise Ratio (warrant:common share)1:1.05843 1:1.05843 1:1.04525 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 March as follows: Outstanding of ESOP Grant I Grant II Grant III No. of exercised warrants in - 70,000 12,900 this month (units) No. of remaining unexercised 1,815,500 3,939,500 8,254,600 warrants (units) No. of shares derived from - 74,089 13,483 this exercise (shares) No. of remaining shares reserved 1,936,076 4,128,486 8,385,415 for warrants (shares) Please be informed accordingly. Yours sincerely, -Signed- Siripen Sitasuwan (Mrs.) Director Advanced Info Service Public Company Limited