NumberingData
Methodology Download the data
Area code Verified Nov 1, 2026 · Source: NANPA

Area code 606 – Kentucky

606 has served Kentucky since 1955. 639 of its 786 number blocks are allocated (81%). No carrier dominates: AT&T 23.8%, Other CLEC / VoIP 23.5%, Windstream 18.3%. FTC complaints naming a 606 caller ID totalled 546 in the 33 days to 30 October 2026 (195th of 422 ranked codes).

State
Kentucky
In service since
1955
Time zone
Eastern, Central
Shares area with
No overlay

Who holds 606 number blocks

Share of the 639 assigned NXX blocks (81.3% of the 786 possible), across 40 carriers. This is share of number blocks, not of subscribers.

  • AT&T23.8%
  • Windstream19.7%
  • Other CLEC / VoIP19.1%
  • Onvoy12.4%
  • Verizon9.1%
  • Lumen5.9%
  • Charter4.9%
  • T-Mobile4.2%
  • Twilio0.6%
  • Telnyx0.2%
  • Bandwidth0.2%

Spam complaints naming 606

FTC Do Not Call complaints where the caller ID was a 606 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.

546 complaints in 33 days
#195 of 422 ranked codes

Rate centers in 606

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 126.

CORBIN37
PIKEVILLE33
ASHLAND25
SOMERSET24
LONDON21

Timeline

  1. 1955 606 goes into service in Kentucky.

More about 606

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.

All prefixes Every one of the 639 assigned NXX blocks, with the holder of each Local time Zone, UTC offset, clock changes and a live clock Spam complaints How often the code appears in FTC complaints, and what to do Carriers Who holds the number blocks, and why that is not who serves them

Frequently asked about 606

What state is area code 606?

Kentucky.

Is a call from 606 a scam?

Not by itself. 606 drew 546 FTC complaints in the 33 days to 30 October 2026, 195th 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 606 numbers?

AT&T holds the largest share of assigned number blocks at 23.8%. 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 606?

No. NANPA records 606 as 7-digit dialing for local calls.

Sources and verification

NANPA dialing note for this code: “7D”. Reviewed by the data desk. Spotted an error? Request a correction.