Area code
Area code 660 — Missouri
Missouri · in service since October 12, 1997
Area code 660 covers parts of Missouri. It was created from area code 816 on October 12, 1997 and no other code overlays it.
Local time in Missouri
Spam reports from Sep 23 – Oct 22, 2026
Average #290 of 461 codes
294 FTC complaints
Consumer reports, not verified by the FTC.
See the reports- Time zoneCentral Time
- Local calls10 digits
- Prefixes533 assigned
- Runs out~2Q 2103
- Unwanted call?Block & report
Spam call reports about 660 numbers
Complaints by week
Sep 11 – Oct 22, 2026Show as table
| Week starting | Complaints |
|---|---|
| Sep 7 (3 days) | 6 |
| Sep 14 | 58 |
| Sep 21 | 99 |
| Sep 28 | 74 |
| Oct 5 | 52 |
| Oct 12 | 57 |
| Oct 19 (4 days) | 45 |
Compared with all codes
- Robocalls
- 81%all codes 75%
- Callers with the same code
- 47%all codes 35%
- Rank by complaints
- #290of 461 · middle half
- FCC complaints, Oct 2025 – Sep 2026
- 372 about text messages
What the calls were about
Sep 11 – Oct 22, 2026
| Subject | Complaints | |
|---|---|---|
| Reducing your debt (credit cards, mortgage, student loans) | 91 23% | |
| Calls pretending to be government, businesses, or family and friends | 49 13% | |
| Dropped call or no message | 36 9% | |
| Medical & prescriptions | 33 8% | |
| Vacation & timeshares | 4 1% | |
| Work from home & other ways to make money | 2 1% |
Where the people who complained live
Sep 11 – Oct 22, 2026
| State | Complaints | |
|---|---|---|
| Missouri | 199 51% | |
| Florida | 24 6% | |
| California | 19 5% | |
| Texas | 13 3% | |
| New York | 11 3% |
October 2026 (partial) report · most reported
Consumer reports, not verified by the FTC · source
Source: FTC Do Not Call complaints created Sep 11 – Oct 22, 2026. They are reported by consumers and are not verified by the FTC; caller ID can be spoofed (how we count).
Source: FCC Consumer Complaints data, unwanted calls filed Oct 1, 2025 – Sep 30, 2026, by caller ID; not verified by the FCC.
Area code 660 location and prefixes
| Exchange (NANPA) | Place | County | Prefixes |
|---|---|---|---|
| SEDALIA | Sedalia | Pettis County | 23 |
| KIRKSVILLE | Kirksville | Adair County | 15 |
| WARRENSBG | Warrensburg | Johnson County | 14 |
| CLINTON | Clinton | Henry County | 13 |
| MARYVILLE | Maryville | Nodaway County | 10 |
| MOBERLY | Moberly | Randolph County | 10 |
| CHILLICOTH | Chillicothe | Livingston County | 9 |
| MARSHALL | Marshall | Saline County | 9 |
| BOONVILLE | Boonville | Cooper County | 6 |
| BUTLER | Butler | Bates County | 6 |
Plus 214 smaller exchange areas.
Source: NANPA CO codes of Oct 23, 2026; places: U.S. Census Bureau, matched by DialWhere (how).
Is 660 running out of numbers?
Previous forecast (October 2025): 2101, moved later by 2 years.
Forecast exhaust year by edition
Source: NANPA NRUF forecast, April 2026 edition.
Who holds 660 prefixes
The five largest of 54 original holders
As listed by NANPA, not today’s carrier.
| Holder (as listed) | Prefixes | |
|---|---|---|
| Level 3 Communications, LLC | 63 12% | |
| Centurylink | 46 9% | |
| Onvoy, LLC | 41 8% | |
| Southwestern Bell | 40 8% | |
| Grand River Mutual Tel Co. | 36 7% |
Source: NANPA CO codes of Oct 23, 2026.
Questions about area code 660
What area code is 660?
A Missouri area code, in service since October 12, 1997.
Where is 660 area code, and what time zone is it in?
Missouri; Central Time.
Why am I getting spam calls from 660?
294 FTC complaints from Sep 23 – Oct 22, 2026, most often about debt reduction (not verified by the FTC; caller ID can be spoofed).
Will 660 get a new area code?
NANPA forecasts exhaust in 2Q 2103; no relief planning listed.