Where is area code 740?
NANPA assigns 740 to Ohio. Area code 740 serves southeastern and central Ohio outside the immediate Columbus metropolitan core. Browse other codes in Ohio
Additional area detail: Public Utilities Commission of Ohio.
Verified area-code information
740 Area Code
740 is an in-service United States area code assigned to Ohio. It identifies a numbering region, not a caller’s current location.
Official Numbering RegionVerified NANPA Assignment
OhioArea Code 740
Country: United States•Time Zone: Eastern•Overlays: 220•In Service: 06-Dec-1997
- Numbering country
- United States
- Area-code type
- Geographic
- Numbering region
- Ohio
- Time-zone information
- Eastern
- In service since
- 06-Dec-1997
View the official area-code maps ↗. Maps show numbering areas, not a caller’s location.
Time zones associated with 740
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.
What area codes overlay 740?
The NANPA source lists 220 in the same overlay complex. An overlay can serve the same broad numbering area; individual numbers still do not prove where a person is.
How do you dial a 740 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 +1 740 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 740
NANPA’s US report listed 786 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 |
|---|---|
| NEWARK | 33 |
| LANCASTER | 29 |
| PORTSMOUTH | 28 |
| ZANESVILLE | 25 |
| ATHENS | 23 |
Top listed companies by assigned prefixes
| Assignment company | Assigned prefixes |
|---|---|
| FRONTIER NORTH, INC. - OH | 123 |
| OHIO BELL TEL CO | 105 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 82 |
| AERIAL COMMUNICATIONS, INC. | 65 |
| LEVEL 3 COMMUNICATIONS, LLC - OH | 63 |
740 prefix lookup
786 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 740
Enter the full ten-digit number to see its structure and formatting. The check stays in your browser.
Check a 740 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.
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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 740
Where is area code 740 located?
Area code 740 is located in central and southeastern Ohio, including cities such as Athens, Chillicothe, Lancaster, Marion, Portsmouth, and Zanesville. It is overlaid by 220.
What time zone is area code 740 in?
740 is assigned to Ohio, 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 740 mean the caller is in Ohio?
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.