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US area code · Tennessee

Area code 865

Where the 865 area code is, its overlay and how to dial a +1 865 number from anywhere.

CoversKnoxville, TennesseeTime zoneEastern (ET)TypeGeographic
Quick answer

The 865 area code is in Knoxville, Tennessee, United States (Eastern (ET)). To call from abroad: +1 865 555-0123.

StateTennessee
Main areaKnoxville
Time zoneEastern (ET)
TypeGeographic
10-digit dialingRequired
In service since15-Apr-1999

The 865 area code is a geographic North American Numbering Plan (NANP) code covering Knoxville, Tennessee. It has been in service since 15-Apr-1999 and sits in the Eastern (ET) time zone.

How to dial a 865 number

From abroad+1 865 555-0123
Within the US / Canada1 865 555-0123
Locally (same area)865 555-0123

Cities in the 865 area code

A 865 number is usually in one of these places in Tennessee — 3 counties.

Knoxville KnoxMaryville BlountOak Ridge Anderson

Other Tennessee area codes

423615629729731901931

Frequently asked questions

Where is the 865 area code?

The 865 area code is in Knoxville, Tennessee, United States (Eastern (ET)).

Do I have to dial 10 digits for 865?

Yes — dial the area code plus the seven-digit number.

How do I call a 865 number from another country?

Dial your exit code (or +), then 1, then 865, then the number: +1 865 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 865 number does not pinpoint a street or ZIP code.

Missed a call from +1 865?

In the 30 days to September 24, 2026, 599 unwanted calls showing a 865 number were reported to the US Federal Trade Commission, 50% of them recorded messages or robocalls. That puts 865 at #137 of 670 area codes reported.

Other229
Medical & prescriptions119
Calls pretending to be government, businesses, or family and friends91
Reducing your debt (credit cards, mortgage, student loans)32
Before you call back
  • If you do not know anyone in Tennessee, do not call back: a genuine caller will leave a message or send a text.
  • Scammers fake the number shown on caller ID, so a 865 number can hide a caller anywhere in the world.
  • Never give a code received by text or a bank detail to an unknown caller. In the US, calls can be reported at reportfraud.ftc.gov.

Who issues +1 865 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 865:

Bellsouth Telecomm Inc Dba South Central Bell Tel 122Cellco Partnership Dba Verizon Wireless 50New Cingular Wireless PCS, LLC 48Paetec Itel, LLC 44Onvoy, LLC 35Powertel Nashville Licenses, Inc. 29

About 19% of the 520 prefixes in use belong to mobile carriers: a 865 number is often a cell phone, and it may have moved to another carrier since.

Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.

All US area codes United States +1 Map of area code 865 — cities & rate centres