Lookup › Area code 312 › 312-558
312-558 Prefix — Barrington, Illinois
Phone numbers starting with 312-558 are based in Barrington, Illinois, primarily served by Level 3 Communications, LLC -.
Recently looked-up numbers in 312-558
More about this region
Area code 312 directory · About area code 312 · Get a IL phone number
Last updated: June 25, 2026