906 area code — Marquette, MI geographic

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

If a call shows area code 906, the number was issued in the Marquette area — a code active since 1961, on Eastern and Central time. 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 356 active NXX prefixes in 906, assigned to 41 carriers. 214 of those prefixes are pooled — shared between carriers in thousands-number blocks. The code spans 93 rate centers (billing localities).

The dialing plan is 10D for home-NPA local calls and 10D across codes.

Unusually, 906 spans two time zones (Eastern and Central). When returning a call, check which part of Michigan the prefix belongs to — the difference is a full hour.

Worth noting: 906 is one of the few NANP area codes whose territory spans two time zones.

Practical takeaway: the 906 label narrows geography to Michigan, the prefix narrows it to a locality, and neither authenticates a caller. Verification means calling back through a number you found yourself.

Largest localities in 906

FAQ

Why am I getting spam calls from 906 numbers?

Scammers spoof recognizable area codes so calls look local or familiar. A displayed 906 number does not prove the call originated there — see our guide to spotting spoofed calls.

Where is a 906 number from?

906 is assigned to Marquette and surrounding areas of Michigan in the Eastern and Central time zone. The three digits after the area code (the prefix) narrow it down to a rate center.

Is 906 a toll-free number?

No. 906 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.