308 area code — Grand Island, NE geographic

Data: NANPA public reports, current as of July 28, 2026.

Phone numbers beginning 308 are registered to the Grand Island area of Nebraska (Central and Mountain time zone). The code entered service on January 1, 1955. Because of number portability and VoIP, the area code tells you where the number was issued, not where the caller is right now.

NANPA lists 461 active NXX prefixes in 308, assigned to 62 carriers. 286 of those prefixes are pooled — shared between carriers in thousands-number blocks. The code spans 167 rate centers (billing localities).

Practical takeaway: the 308 label narrows geography to Nebraska, the prefix narrows it to a locality, and neither authenticates a caller. Verification means calling back through a number you found yourself.

Official projections put exhaust at 1Q 2057.

Unusually, 308 spans two time zones (Central and Mountain). When returning a call, check which part of Nebraska the prefix belongs to — the difference is a full hour.

The dialing plan is 7D for home-NPA local calls and 7D across codes.

Worth noting: 308 is one of the few NANP area codes whose territory spans two time zones.

Largest localities in 308

FAQ

Will 308 run out of numbers?

NANPA's current forecast projects exhaust in 1Q 2057 — decades of capacity remain.

Why am I getting spam calls from 308 numbers?

Scammers spoof recognizable area codes so calls look local or familiar. A displayed 308 number does not prove the call originated there — see our guide to spotting spoofed calls.

Where is a 308 number from?

308 is assigned to Grand Island and surrounding areas of Nebraska in the Central and Mountain time zone. The three digits after the area code (the prefix) narrow it down to a rate center.