339 area code — Lynn, MA geographic

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

Area code 339 is a geographic code serving Lynn, Massachusetts in the Eastern time zone. It has been in service since May 2, 2001. It is part of the 339/781 overlay complex — these codes share the same territory. Note that porting and VoIP mean a 339 number can be used from anywhere — the code marks where the number was assigned.

103 central-office prefixes are currently active in this code, spread across 22 code-holding carriers. Thousands-block pooling applies to 103 prefixes, so a single prefix can belong to several carriers. Its prefixes map to 35 distinct rate centers.

339 was created from 781 in 2001.

Dialing: 10D locally, 10D to other codes (1+10 digit permissible at service provider discretion).

Practical takeaway: the 339 label narrows geography to Massachusetts, 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 339

FAQ

Why do 781 and 339 cover the same place?

They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 339/781 complex shares one service area, and local calls are dialed with 10 digits.

Why am I getting spam calls from 339 numbers?

Scammers spoof recognizable area codes so calls look local or familiar. A displayed 339 number does not prove the call originated there — see our guide to spotting spoofed calls.

Where is a 339 number from?

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

Is 339 a toll-free number?

No. 339 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.