The 931 area code covers Clarksville, Cookeville and 80 more places in Tennessee.
Area code 931 is in Tennessee, on Eastern Time and Central Time. In the 931 area, phone numbers are given out most in Montgomery County, then Maury and Putnam counties. It has been in service since September 15, 1997.
- Where
- 8 counties in Tennessee, mostly Montgomery County, Maury County and Putnam County
- Time zone
- Eastern Time and Central Time
- In service since
- September 15, 1997
- Shares its area with
- No other area code
- Prefixes in use
- 538
- How to dial
- Local calls inside 931 can still be dialed with just 7 digits.
Find out who called you from a 931 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (931) number is on today, use our free carrier lookup.
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Clarksville holds 13% of the phone prefixes in area code 931.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 538 prefixes in use shows where 931 numbers are actually given out.
- Clarksville71 prefixes, 13%
- Cookeville38 prefixes, 7%
- Columbia32 prefixes, 6%
- Shelbyville22 prefixes, 4%
- Crossville17 prefixes, 3%
- Tullahoma17 prefixes, 3%
- Winchester15 prefixes, 3%
- Lawrenceburg13 prefixes, 2%
Also served: McMinnville, Baxter, Pulaski and Fayetteville and 70 smaller places.
BellSouth (AT&T) holds the most phone number prefixes in area code 931: 79 of 538.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 538 prefixes in use in 931 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| BellSouth (AT&T)AT&T's landline company | 79 | 15% |
| AT&T MobilityMobile network | 53 | 10% |
| Level 3 (Lumen)Lumen's business and wholesale network | 45 | 8% |
| T-MobileMobile network | 39 | 7% |
| Charter (Spectrum)Cable company's phone service | 28 | 5% |
| PAETEC (Windstream)Windstream's business phone network | 26 | 5% |
| 35 other carriers | 268 | 50% |
72% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
931 has covered the same ground since 1997.
1997
931 starts on September 15, 1997, split off from 615.
A 931 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 931 are 615, 256 and 731.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
Tennessee has 7 other area codes.
These are the questions people ask most about area code 931.
Where is area code 931?
931 covers Clarksville, Cookeville, Columbia and Shelbyville and 78 more places in Tennessee. In the 931 area, phone numbers are given out most in Montgomery County, then Maury and Putnam counties.
What state is area code 931 in?
Tennessee. 931 is a Tennessee area code on Eastern Time and Central Time.
What cities use area code 931?
The places holding the most 931 prefixes are Clarksville, Cookeville, Columbia, Shelbyville, Crossville, Tullahoma, Winchester and Lawrenceburg, out of 82 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 931?
No single phone company owns 931. NANPA's records show BellSouth (AT&T) holds the most 931 prefixes, 79 of 538, followed by AT&T Mobility and Level 3 (Lumen). Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 931 in?
931 is on Eastern Time and Central Time.
When did area code 931 start?
931 went into service on September 15, 1997, when it was split off from 615.
How do I dial a 931 number?
Local calls inside 931 can still be dialed with just 7 digits.
Is 931 a toll-free number?
No. 931 is a regular area code for Clarksville and Cookeville in Tennessee, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 931?
The closest are 615/629 (Nashville, Tennessee), 256/938 (Huntsville, Alabama), 731 (Jackson, Tennessee) and 270/364 (Owensboro, Kentucky), measured between the centres of each area.
Who called me from a 931 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 931 a scam?
931 is a real Tennessee area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.