When did 3 digit phone numbers end?

Answer 1

Three-digit phone numbers have not entirely "ended," as they still exist in various forms, such as area codes and special service numbers (like 911 for emergencies). However, the transition to more complex numbering plans began in the late 20th century, particularly with the introduction of seven-digit local numbers in the 1940s and 1950s. The move towards ten-digit dialing, which includes area codes, was more widely adopted in the 1990s and early 2000s. Today, the use of three-digit numbers is limited to specific services and emergency calls.