Area code 339
Area code 339 serves Boston and nearby parts of Massachusetts, including Lynn, Waltham and Woburn. It is on Eastern Time, which observes daylight saving time. 781 is an overlay for the same area.
Area code 339 at a glance
| State | Massachusetts (MA) |
| Main city | Boston |
| Time zone | Eastern Time |
| UTC offset | UTC−5 in winter, UTC−4 in summer |
| Daylight saving time | Yes |
| Overlay codes | 781 |
Cities in 339
- Boston
- Lynn
- Waltham
- Woburn
An area code shows where a number was first assigned. Mobile numbers keep their area code when people move, so the person you’re calling may be somewhere else.
When you can call a 339 number
Federal telemarketing rules under the TCPA allow sales calls between 8 AM and 9 PM in the called person’s local time. Here is that window for a 339 number, shown in your own time zone.
General information, not legal advice. Some states add rules for Sundays, holidays or the number of calls. See our calling hours guide.
| If you’re on | You can call 339 between |
|---|---|
| Eastern | 8:00 AM to 9:00 PM |
| Central | 7:00 AM to 8:00 PM |
| Mountain | 6:00 AM to 7:00 PM |
| Arizona | 5:00 AM to 6:00 PM |
| Pacific | 5:00 AM to 6:00 PM |
See the time in 339 without leaving your CRM
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Other area codes in Massachusetts
Questions about 339
What time zone is area code 339?
Area code 339 is on Eastern Time. It observes daylight saving time.
Where is area code 339?
Area code 339 is in Massachusetts. Its main city is Boston, and it also covers Lynn, Waltham and Woburn.
What are the legal hours to call a 339 number?
Under the federal TCPA, sales calls are allowed from 8 AM to 9 PM in the called person’s local time. Personal and informational calls are not limited by these hours.
What area codes overlay 339?
781 covers the same area as 339, so numbers in the same town can have either code.