The 865 area code covers Knoxville, Maryville and 23 more places in Tennessee.
Area code 865 is in Tennessee, on Eastern Time. In the 865 area, phone numbers are given out most in Knox County, then Blount and Anderson counties. It has been in service since November 1, 1999.
- Where
- 8 counties in Tennessee, mostly Knox County, Blount County and Anderson County
- Time zone
- Eastern Time
- In service since
- November 1, 1999
- Shares its area with
- No other area code
- Prefixes in use
- 506
- How to dial
- Local calls need all 10 digits: 865-555-0142.
Find out who called you from an 865 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (865) number is on today, use our free carrier lookup.
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Knoxville holds 55% of the phone prefixes in area code 865.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 506 prefixes in use shows where 865 numbers are actually given out.
- Knoxville276 prefixes, 55%
- Maryville41 prefixes, 8%
- Oak Ridge21 prefixes, 4%
- Sevierville14 prefixes, 3%
- Lenoir City11 prefixes, 2%
- Kingston11 prefixes, 2%
- Mascot8 prefixes, 2%
- Clinton8 prefixes, 2%
Also served: Harriman, Gatlinburg, Powell and Loudon and 13 smaller places.
BellSouth (AT&T) holds the most phone number prefixes in area code 865: 122 of 506.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 506 prefixes in use in 865 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| BellSouth (AT&T)AT&T's landline company | 122 | 24% |
| AT&T MobilityMobile network | 48 | 9% |
| PAETEC (Windstream)Windstream's business phone network | 44 | 9% |
| T-MobileMobile network | 29 | 6% |
| Teleport (AT&T)AT&T's business phone network | 29 | 6% |
| UScellularMobile network | 19 | 4% |
| 38 other carriers | 215 | 42% |
74% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
865 has covered the same ground since 1999.
1999
865 starts on November 1, 1999, split off from 423.
An 865 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 865 are 423, 828 and 606.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
Tennessee has 7 other area codes.
These are the questions people ask most about area code 865.
Where is area code 865?
865 covers Knoxville, Maryville, Oak Ridge and Sevierville and 21 more places in Tennessee. In the 865 area, phone numbers are given out most in Knox County, then Blount and Anderson counties.
What state is area code 865 in?
Tennessee. 865 is a Tennessee area code on Eastern Time.
What cities use area code 865?
The places holding the most 865 prefixes are Knoxville, Maryville, Oak Ridge, Sevierville, Lenoir City, Kingston, Mascot and Clinton, out of 25 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 865?
No single phone company owns 865. NANPA's records show BellSouth (AT&T) holds the most 865 prefixes, 122 of 506, followed by AT&T Mobility and PAETEC (Windstream). Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 865 in?
865 is on Eastern Time.
When did area code 865 start?
865 went into service on November 1, 1999, when it was split off from 423.
How do I dial an 865 number?
Local calls need all 10 digits: 865-555-0142.
Is 865 a toll-free number?
No. 865 is a regular area code for Knoxville and Maryville in Tennessee, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 865?
The closest are 423/729 (Chattanooga, Tennessee), 828 (Asheville, North Carolina), 606 (Corbin, Kentucky) and 864/821 (Greenville, South Carolina), measured between the centres of each area.
Who called me from an 865 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 865 a scam?
865 is a real Tennessee area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.