Area code 339 – Massachusetts
339 has served Massachusetts since 2001, split from 781. It is still largely empty: 105 of 786 number blocks allocated. No carrier dominates: Other CLEC / VoIP 29.5%, Verizon 24.8%, Onvoy / Inteliquent 17.1%. It shares its geography with overlay codes 781, so local calls take all ten digits. Spam complaints are comparatively rare: 160 in the 33 days to 30 October 2026, 356th of the 422 codes with five or more complaints.
- State
- Massachusetts
- In service since
- 2001
- Time zone
- Eastern
- Shares area with
- 781
Who holds 339 number blocks
Share of the 105 assigned NXX blocks (13.4% of the 786 possible), across 23 carriers. This is share of number blocks, not of subscribers.
- Verizon24.8%
- Onvoy17.1%
- Other CLEC / VoIP17.1%
- Windstream10.5%
- T-Mobile9.5%
- Lumen8.6%
- AT&T3.8%
- Comcast2.9%
- Peerless1.9%
- Dish1%
- Telnyx1%
- Bandwidth1%
- Charter1%
Spam complaints naming 339
FTC Do Not Call complaints where the caller ID was a 339 number, 28 Sep – 30 Oct 2026 (33 days). Caller IDs on spam calls are frequently spoofed, so these are complaints about the code, not calls proven to originate in it.
Rate centers in 339
NANPA allocates number blocks to rate centers and records their names abbreviated to ten characters, so these are NANPA's codes rather than place names – CHAMPAURBN is Champaign-Urbana, NWYRCYZN01 is a New York City zone. We show them unchanged instead of guessing at the full names. Showing the largest 5 of 35.
Timeline
- 2001 339 goes into service, split from or overlaid on 781.
More about 339
Separate pages for the questions that need their own answer: what time it is there, what the complaint data says, who holds the number blocks, and how the code compares with the one it shares its area with.
Frequently asked about 339
What state is area code 339?
Massachusetts. It covers the same area as 339/781.
Is a call from 339 a scam?
Not by itself. 339 drew 160 FTC complaints in the 33 days to 30 October 2026, 356th of 422 ranked codes – mid-pack or lower. Spam callers spoof caller IDs, so the only useful check is the full number.
Which carrier owns 339 numbers?
Other CLEC / VoIP holds the largest share of assigned number blocks at 29.5%. The rest is spread across 3 other carriers. This is share of number blocks, not of subscribers – people keep their numbers when they switch carriers.
Do I need to dial 10 digits in 339?
Yes – ten digits for local calls in 339, because it shares its area with another code.
Sources and verification
- NANPA – NPA Database (npa_report.csv), file date 11/01/2026, retrieved Nov 1, 2026
- NANPA – CO Code Assignment Records, All States (utilized), file updated 11/01/2026, retrieved Nov 1, 2026
- FTC – Do Not Call Reported Calls Data, 25 daily files 28 Sep – 30 Oct 2026, retrieved Nov 1, 2026
NANPA dialing note for this code: “10D”. Reviewed by the data desk. Spotted an error? Request a correction.