Area code 959 – Connecticut
959 has served Connecticut since 2014, split from 860. It is still largely empty: 164 of 786 number blocks allocated. No carrier dominates: Other CLEC / VoIP 33.5%, Onvoy / Inteliquent 28.0%, T-Mobile 8.5%. It shares its geography with overlay codes 860, so local calls take all ten digits. Spam complaints are comparatively rare: 248 in the 33 days to 30 October 2026, 323rd of the 422 codes with five or more complaints.
- State
- Connecticut
- In service since
- 2014
- Time zone
- Eastern
- Shares area with
- 860
Who holds 959 number blocks
Share of the 164 assigned NXX blocks (20.9% of the 786 possible), across 32 carriers. This is share of number blocks, not of subscribers.
- Other CLEC / VoIP30.5%
- Onvoy28%
- T-Mobile9.1%
- Verizon8.5%
- AT&T6.7%
- Charter5.5%
- Bandwidth3%
- Peerless1.2%
- Windstream1.2%
- Telnyx1.2%
- Dish1.2%
- Lumen1.2%
- Vonage0.6%
- Comcast0.6%
- TPx0.6%
- Twilio0.6%
Spam complaints naming 959
FTC Do Not Call complaints where the caller ID was a 959 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 959
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 53.
Timeline
- 2014 959 goes into service, split from or overlaid on 860.
More about 959
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 959
What state is area code 959?
Connecticut. It covers the same area as 860/959.
Is a call from 959 a scam?
Not by itself. 959 drew 248 FTC complaints in the 33 days to 30 October 2026, 323rd 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 959 numbers?
Other CLEC / VoIP holds the largest share of assigned number blocks at 33.5%. 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 959?
Yes – ten digits for local calls in 959, 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.