Lookup › Area code 312 › 312-940
312-940 Prefix — Chicgozn04, Illinois
Phone numbers starting with 312-940 are based in Chicgozn04, Illinois, primarily served by Ip Horizon, LLC.
Recently looked-up numbers in 312-940
More about this region
Area code 312 directory · About area code 312 · Get a IL phone number
Last updated: July 10, 2026