313-740 Prefix — Detroitzn6, Michigan

Phone numbers starting with 313-740 are based in Detroitzn6, Michigan, primarily served by T-Mobile.

Recently looked-up numbers in 313-740

• 313-740-4233

More about this region

Area code 313 directory · About area code 313 · Get a MI phone number

Last updated: March 7, 2026