606 area code — Corbin, KY geographic

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

Area code 606 is a geographic code serving Corbin, Kentucky in the Eastern and Central time zone. It has been in service since January 1, 1955. Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.

The code currently holds 629 working prefixes, held by 39 different carriers. Of these, 392 are pooled prefixes shared by multiple carriers. Numbers are anchored to 125 rate centers — billing localities that fix where each prefix belongs.

As demand grew it in turn gave rise to 859 (2000).

The current NANPA exhaust forecast is 4Q 2035.

This is one of the few NANP codes whose territory crosses a time-zone boundary (Eastern and Central), so identical codes can sit an hour apart.

Local calls inside 606 are dialed 7D; some cross-boundary 7d local dialing exists.

Among Kentucky codes, 606 stands out as one of the few NANP area codes whose territory spans two time zones.

If a 606 call asks for money or personal data, treat the displayed number as unverified: hang up and reach the organization through its published number. Numbering data locates numbers, not callers.

Largest localities in 606

FAQ

Why am I getting spam calls from 606 numbers?

Scammers spoof recognizable area codes so calls look local or familiar. A displayed 606 number does not prove the call originated there — see our guide to spotting spoofed calls.

Where is a 606 number from?

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

Is 606 a toll-free number?

No. 606 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.

Will 606 run out of numbers?

NANPA's current forecast projects exhaust in 4Q 2035 — decades of capacity remain.