Area code 865

About area code 865

Area code 865 is a geographic area code in Tennessee, in service since November 1, 1999, according to the North American Numbering Plan Administrator (NANPA). It is not part of an overlay, so every number in its territory starts with 865. It is in the Eastern time zone. The places with the most assigned exchanges include Knoxville, Maryville, Oak Ridge, Sevierville, and Lenoir City. By population, its largest named places are Knoxville, Oak Ridge, Maryville, Sevierville, and Lenoir City.

Places served by 865

865 holds 13% of the 3,797 central office codes assigned in Tennessee, the 5th most of the state's 8 codes. 20 Census places could be matched to rate centers with 865 exchanges; the most populous are Knoxville (199,000), Oak Ridge (34,039), Maryville (32,373), and Sevierville (18,231). Each place page lists the exact prefixes and carriers for that town.

Ten-digit and seven-digit dialing in 865

According to NANPA's dialing-plan data, local calls within 865 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "1+10 digit permissible at service provider discretion."

Who holds 865 exchanges

46 carriers hold the 506 central office codes assigned in 865. Bellsouth Telecomm INC d/b/a South Central Bell Tel has the most, with 122 (24%). 376 of the codes (74%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.

Where 865 numbers are rated

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 865 has codes in 33 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.

How full is area code 865?

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 506 are assigned in 865, 63% of 800. 84 were assigned in 2020 or later.

Getting a 865 number for your business

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

Porting a number you already use in area code 865 is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.