865 area code
Knoxville area, Eastern Time.Area code 865 covers Knoxville, Maryville, Oak Ridge and 30 more places in Tennessee, on Eastern Time.
Right now in Knoxville
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer)
Calling hours: Every day, 8 AM to 9 PM (the federal rule)
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Where 865 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 865 has 33. Each one's share is how many 865 numbers start there. Its biggest metro area is Knoxville, TN.
- Knoxville55%
- Maryville8%
- Oak Ridge4%
- Sevierville3%
- Kingston2%
- Lenoir City2%
Also: Concord, Clinton, Mascot, Gatlinburg, Harriman, Powell, Jefferson City, Loudon, Dandridge, Sharps Chapel, Bean Station, Chestnut Hill + 15 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call an 865 number?
Sales calls to homes and cell phones have legal hours, set by the federal rule. Hold every 865 number to them, since you can't tell a work line from a personal cell.
What applies to 865Every day, 8 AM to 9 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
The 865 area code
865 went into service on November 1, 1999, split off from 423. Local calls take all 10 digits.
- 1999865 starts
Source: NANPA area code database
Calling a list of 865 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
865 area code FAQ
What area code is 865?
865 is a Tennessee area code for Knoxville, Maryville, Oak Ridge, Sevierville and 29 more places.
What time zone is the 865 area code in?
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer).
What are the calling hours for 865 numbers?
Every day, 8 AM to 9 PM, local time, under the federal rule.
When did the 865 area code start?
On November 1, 1999. It was split from 423.
Calling 865 numbers? Reach more of them.
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