Bangkok:India were relegated to Fed Cup Asia/Oceania Zone group II after top seeds Australia blanked them 3-0 in their third and final group I match here.
After successive defeats to Indonesia and New Zealand in pool A, India were once again missing Sania Mirza as Australia gave them a sound thrashing.
Isha Lakhani started the proceedings for the Indians and wasted a one-set lead to go down 6-3 4-6 1-6 against Jessica Moore.
Sunitha Rao was next to come but the US-based player was swept aside 3-6 5-7 by Casey Dellacqua.
The 2-0 Aussie lead made the doubles tie inconsequential but the top seeds were in no mood to concede even an inch as Dellacqua and Rennae Stubbs beat Sunitha and Shikha Uberoi 7-6 (2) 6-0 to complete the rout.
In the other group matches Taiwan defeated Thailand 3-0, New Zealand blanked Indonesia 3-0, Uzbekistan thrashed Hong Kong 2-1.