Where is area code 865?
NANPA assigns 865 to Tennessee. The source report does not provide city-level coverage for this record, so this page does not guess a particular city. Browse other codes in Tennessee
Verified area-code information
865 Area Code
865 is an in-service United States area code assigned to Tennessee. It identifies a numbering region, not a caller’s current location.
Official Numbering RegionVerified NANPA Assignment
TennesseeArea Code 865
Country: United States•Time Zone: Eastern•In Service: 01-Nov-1999
- Numbering country
- United States
- Area-code type
- Geographic
- Numbering region
- Tennessee
- Time-zone information
- Eastern
- In service since
- 01-Nov-1999
View the official area-code maps ↗. Maps show numbering areas, not a caller’s location.
Time zones associated with 865
NANPA lists Eastern for this numbering area. These are numbering-region time zones, not a caller’s current location.
Eastern time
An area code can span more than one time zone. Local daylight-saving rules may differ.
How do you dial a 865 number?
Use the North American country calling code +1 followed by the three-digit area code and seven-digit local number. For example, write the pattern as +1 865 XXX XXXX. Local dialing rules and charges depend on your location and provider. Check a supported dialing format or check NANPA’s 10-digit dialing list.
Assigned prefixes in 865
NANPA’s US report listed 500 assigned prefixes on 2026-09-29. These are code assignments, not a count of active phone numbers or proof of a caller’s current carrier. Search any US area code and prefix.
Top rate-center labels by assigned prefixes
| Rate center | Assigned prefixes |
|---|---|
| KNOXVILLE | 275 |
| MARYVILLE | 40 |
| OAK RIDGE | 20 |
| SEVIERVL | 14 |
| KINGSTON | 11 |
Top listed companies by assigned prefixes
| Assignment company | Assigned prefixes |
|---|---|
| BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 122 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 49 |
| NEW CINGULAR WIRELESS PCS, LLC - GA | 48 |
| PAETEC ITEL, LLC | 44 |
| ONVOY, LLC - TN | 32 |
865 prefix lookup
500 assigned prefixes are listed for this area code. Search NANPA’s US central-office code assignments. The listed company and rate center describe an assignment; number portability means they cannot identify the current carrier, subscriber, or caller.
The area-code file loads when you search. The three-digit prefix stays in your browser.
Check a number with area code 865
Enter the full ten-digit number to see its structure and formatting. The check stays in your browser.
Check a 865 number
Enter a 10-digit +1 North American number. We check its structure and area-code record, not the caller’s identity or whether the line is active.
Processed locally in your browser. Nothing you enter is sent to OfficialAreaCode or saved.
Received an unfamiliar call?
The displayed number may be spoofed. Do not rely on an area code as proof of caller identity. If the caller claims to represent a business, end the call and contact that business using a number you found independently.
Common questions about 865
What time zone is area code 865 in?
865 is assigned to Tennessee, and the NANPA record associates it with Eastern time. A phone number does not reveal its owner’s current time zone. The clock above uses a representative time zone for the numbering area.
Does 865 mean the caller is in Tennessee?
No. An area code is an assignment, and a person can travel, move, use internet calling, or display a spoofed number.
Can this page identify who called?
No. OfficialAreaCode has no live subscriber directory or spam-report database.