AT&T Southern New England Telephone

The Southern New England Telephone Company (commonly referred to as SNET by its customers) started operations on January 27, 1878 as the District Telephone Company of New Haven. It was the founder of the first telephone exchange, as well as the world's first telephone book. Since its inception, SNET has held a monopoly on most of the telephone services in the state of Connecticut; the only remaining exception is the Greenwich and Byram exchanges where Verizon New York provides telephone service. The Southern New England Telephone Company currently does business as AT&T Connecticut.