SNET Diversified Group, Inc. was one of the companies owned by AT&T that provided AT&T Yahoo!-branded Internet services to customers located within Connecticut.
It did business as AT&T Internet Services.
Merger
Following AT&T's announcement that it would sell Southern New England Telephone and SNET America to Frontier Communications, SNET Diversified Group was merged into AT&T Corp.
References
SNET Diversified Group Wikipedia(Text) CC BY-SA