US Area Code Lookup
Enter a code to see its state and time zone, or search by location to find every code that serves it — 313 codes, instantly.
The ones everyone recognizes.
Runs entirely in your browser.
Area codes are assigned by the North American Numbering Plan (NANP) — we match what you type against that table on your device, no API call, no signup.
A code shows where it was issued, not a caller's exact address, and mobile numbers travel with their owner.
Built for anyone reading a number.
Choosing a recognizable local code before entering a new market.
Timing outreach to a prospect's actual local business hours.
Identifying where an unfamiliar incoming call is really from.
Validating area codes in signup forms and CRM data.
Every state, code count included.
Click a state to jump back up and see its codes.
Get a local number in that area code.
Rozper provisions numbers in most active US area codes — usually live within minutes.
Questions, answered.
Need numbers beyond the US?
Rozper provisions local and toll-free numbers across 150+ countries on one bill.