Area code 606: Kentucky
Area code 606 is a US state area code for Kentucky, on Eastern Time and Central Time. It has 636 prefixes in service across 125 rate centers, the largest being Corbin, Pikeville and Ashland. NANPA lists no overlay code for it. Local calls there take 7 digits.
Local time in area code 606
America/New_York
America/Chicago
Prefixes in service
636 of 792 possible
125 rate centers
Area code 606 facts
| Location | Kentucky, United States |
|---|---|
| Time zones | Eastern Time and Central Time |
| Overlays | None |
| In service since | January 1, 1955 |
| Local calls | 7 digits; toll calls 1 + 10 digits |
| Carrier | Not shown. An area code is where a number was issued; numbers port between carriers. Check line type |
Which cities and towns use area code 606?
NANPA records each prefix against a rate center, the local billing area a number belongs to, usually named after its main town. These are the 606 rate centers with the most prefixes in service. 113 smaller ones aren't listed.
| Rate center | Prefixes |
|---|---|
| Corbin | 37 |
| Pikeville | 30 |
| Ashland | 25 |
| Somerset | 24 |
| London | 21 |
| Morehead | 15 |
| Hazard | 15 |
| Middlesboro | 14 |
| Meads | 13 |
| Whitesburg | 12 |
| Paintsville | 12 |
| Barbourville | 10 |
Source: NANPA central office code assignments, file dated 10/17/2026. Each prefix holds up to 10,000 numbers.
How do I dial a 606 number?
NANPA's dialling plan for 606: local calls inside the code take 7 digits, toll calls 1 + 10 digits. From another area code, dial 1 first. From abroad, use +1. The examples use 555-0147, from a range reserved for fictional numbers.
| Local call inside 606 | 555-0147 |
|---|---|
| From another US or Canadian area code | 1-606-555-0147 |
| From outside North America | +1 606 555 0147 |
| E.164, for CRMs and SMS tools | +16065550147 |
When did area code 606 start?
Area code 606 went into service on January 1, 1955. It has no overlay, so every number in its area still starts with it.
Tools for 606 numbers
- Area code lookup
Look up any code or a whole list of numbers, or find the codes for a state or city.
- Area code time zone
Local time for a list of numbers, with a callable-now flag.
- NPA-NXX lookup
Rate center and state for one prefix, a level below the area code.
- TCPA calling hours checker
Whether it's inside the federal 8 a.m. to 9 p.m. calling window there now.
Next step
A 606 number tells you where it was issued, not what it is now.
Mobiles, landlines and VoIP lines share area codes, and numbers move between carriers. A live line-type and carrier lookup on every number in your list says which is which, and that decides which calling and texting rules apply. It's in the Email + Phone plan.
- Drop your list as a CSV
- See its rows, duplicates and bad formats, free
- 100 free email checks when you sign in with Google, no card
Ready to verify now? See the Email + Phone plan
Area code 606 questions
- What state is area code 606?
- Area code 606 is in Kentucky, United States. Its largest rate centers by number of prefixes are Corbin, Pikeville, Ashland, Somerset and London.
- What time zone is area code 606 in?
- Eastern Time and Central Time. The code crosses a time zone line, so the local time depends on where in the area the number was issued.
- Does area code 606 have an overlay?
- Not as of NANPA's file dated 10/16/2026. Every number in its area uses 606.
- When did area code 606 start?
- Area code 606 went into service on January 1, 1955.
- Is a 606 number a cell phone or a landline?
- The area code can't tell you. In the US and Canada mobiles, landlines and VoIP lines share area codes and prefixes, and numbers move between carriers and line types. Only a live line-type lookup answers it for one number.
- How many phone numbers does area code 606 have?
- 636 of its 792 possible prefixes are in service, and each prefix holds up to 10,000 numbers. That counts prefixes assigned to carriers, not numbers in use.
Other area codes in Kentucky
Sources
Location, overlays, in-service date and dialling plan: NANPA NPA database, file dated 10/16/2026. Prefixes and rate centers: NANPA central office code assignments, 10/17/2026. Time zones mapped to the IANA time zone database. By the SimpleVerifier Team; how we build these pages.