Area codes / Kentucky / 606
The 606 area code
606 is an area code in Kentucky, in the Eastern and Central time zones. Get a local 606 number for your business, shared by everyone who answers it, or bring the 606 number you already have.
606 at a glance
- State
- Kentucky
- Time zone
- Eastern and Central
- In service since
- 1955
- Overlay
- None: the only code for its area
- Local calls
- Seven-digit dialing within the area code
Get a 606 business number
When you sign up for Onyx Phone, you pick a local number by area code: search 606, narrow it by the next three digits or the last four if you want something memorable, and it's yours on the spot. Which numbers are free changes daily.
The number rings everyone you assign to it, in the browser, on the iPhone and Android apps, and on desk phones, and texts from it are unlimited once US carriers approve your business. Your plan includes one number for each user, and more numbers are $5 a month.
Calling 606 customers
Local calls within 606 can be dialed with seven digits. 606 spans the Eastern and Central time zones, so the local time depends on where the caller is.
Calls from Onyx Phone show your business number, and once your business is verified, your caller ID name too, so 606 customers see who's calling.
Questions about area code 606
What state is area code 606?
Area code 606 is in Kentucky.
What time zone is area code 606 in?
Area code 606 covers places in the Eastern and Central time zones, so check which one a caller is in before you call early or late.
Is 606 an overlay area code?
No. Today 606 is the only area code for its part of Kentucky.
Can I get a 606 business number?
Onyx Phone sells US local numbers. When you pick your number, search the 606 area code; which numbers are free changes daily.
Can I keep the 606 number I already have?
Yes. Moving a number to Onyx Phone is free on every plan and usually takes 3 to 7 business days. You answer on a temporary number until it moves.
Included on every plan
Starter is $17, Business is $29, Scale is $42 per user a month, or less billed yearly. The plan includes a business number for each user and unlimited calling and texting in the US and Canada. Every plan starts with a 7-day free trial, and moving your current number over is free.
Area code data from the North American Numbering Plan Administrator (NANPA), file of October 24, 2026.