Area code 859: Kentucky
What is area code 859?
Area code 859 is a US state area code for Kentucky, on Eastern Time. It has 561 prefixes in service across 42 rate centers, the largest being Lexington, Covington and Boone. NANPA lists no overlay code for it. Local calls there take 10 digits. The code never shows a line is in service.
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See the phone add-onArea code 859 facts
| Location | Kentucky, United States |
|---|---|
| Time zone | Eastern Time |
| Overlays | None |
| Split from | 606 |
| In service since | April 1, 2000 |
| Local calls | 10 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 |
In short: 859 is Kentucky (Eastern Time). Format checks here are free and run in your browser; the current carrier and line type need a live lookup. Bulk phone number validator · Pro + Phone plan
Local time in area code 859
America/New_York
Prefixes in service
561 of 792 possible
42 rate centers
Which cities and towns use area code 859?
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 859 rate centers with the most prefixes in service. 30 smaller ones aren't listed.
| Rate center | Prefixes |
|---|---|
| Lexington | 164 |
| Covington | 95 |
| Boone | 32 |
| Winchester | 28 |
| Richmond | 24 |
| Danville | 16 |
| Mount Sterling | 13 |
| Berea | 11 |
| Harrodsburg | 11 |
| Cynthiana | 10 |
| Nicholasville | 10 |
| Paris | 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 859 number?
NANPA's dialling plan for 859: local calls inside the code take 10 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 859 | 859-555-0147 |
|---|---|
| From another US or Canadian area code | 1-859-555-0147 |
| From outside North America | +1 859 555 0147 |
| E.164, for CRMs and SMS tools | +18595550147 |
When did area code 859 start?
Area code 859 went into service on April 1, 2000, split from 606. It has no overlay, so every number in its area still starts with it.
Tools for 859 numbers
- Bulk phone number validator
Format, country and number type for every number in a CSV, with E.164 output.
- Area code lookup
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- Area code time zone
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- 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 859 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 phone add-on.
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Area code 859 questions
- What state is area code 859?
- Area code 859 is in Kentucky, United States. Its largest rate centers by number of prefixes are Lexington, Covington, Boone, Winchester and Richmond.
- What time zone is area code 859 in?
- Eastern Time.
- Does area code 859 have an overlay?
- Not as of NANPA's file dated 10/16/2026. Every number in its area uses 859.
- When did area code 859 start?
- Area code 859 went into service on April 1, 2000, split from 606.
- Is an 859 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 859 have?
- 561 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.
- Does a valid format mean a 859 number is in service?
- No. A format check only says the digits fit the North American Numbering Plan and that 859 is an assigned code. It cannot tell whether the number is connected, who answers it or which carrier serves it today, because numbers are reassigned and ported. A live carrier lookup reports the current carrier and line type, but even that is not proof someone answers.
- Can I check a list of 859 numbers for free?
- Yes. Paste them in the list tab above or upload a CSV to the bulk phone number validator: format, E.164, country and the numbering-plan line type are free for every row, with no account. Live carrier and line-type lookups come with Pro + Phone at $49.99/mo (5,000 a month).
Other area codes in Kentucky
All Kentucky area codes on the area code index.
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.