636 Area Code — Scam Calls, Location & Who's Calling
Area code 636 serves Missouri in the Central time zone, in service since 1999. The FCC has 1,686 unwanted-call complaints against 1,366 different 636 numbers on record. Look up the exact number that called you below.
Most-reported 636 numbers
Ranked by FCC unwanted-call complaints. Click a number for its full report.
- (636) 410-••••19 complaints · 2018-04-24
- (636) 224-••••13 complaints · 2016-12-01
- (636) 236-••••11 complaints · 2016-04-08
- (636) 290-••••10 complaints · 2016-03-18
- (636) 244-••••10 complaints · 2015-04-09
- (636) 323-••••8 complaints · 2018-10-15
- (636) 730-••••8 complaints · 2018-03-27
- (636) 323-••••7 complaints · 2025-04-02
- (636) 204-••••7 complaints · 2024-11-15
- (636) 947-••••7 complaints · 2016-12-06
- (636) 323-••••7 complaints · 2016-05-19
- (636) 224-••••7 complaints · 2015-11-23
- (636) 875-••••6 complaints · 2024-08-24
- (636) 591-••••6 complaints · 2018-09-19
- (636) 649-••••6 complaints · 2017-05-11
- (636) 373-••••6 complaints · 2017-05-03
- (636) 346-••••6 complaints · 2016-06-15
- (636) 541-••••6 complaints · 2015-12-04
- (636) 259-••••6 complaints · 2015-03-19
- (636) 875-••••5 complaints · 2025-02-19
- (636) 224-••••5 complaints · 2017-10-02
- (636) 271-••••5 complaints · 2016-08-08
- (636) 274-••••5 complaints · 2016-07-20
- (636) 448-••••5 complaints · 2015-07-02
- (636) 489-••••4 complaints · 2025-06-05
636 unwanted-call complaints, last 12 months
Monthly FCC complaint volume against 636 numbers. Spikes usually mark an active robocall campaign cycling through the code.
Carriers operating in 636
Carriers assigned to 636 prefixes that visitors have looked up so far — resolved from official NPA-NXX assignment records.
- SOUTHWESTERN BELLI · 10 prefixes
- T-MOBILE USA, INC.Wireless · 7 prefixes
- LEVEL 3 COMMUNICATIONS, LLC - MOC · 6 prefixes
- PAETEC ITEL, LLCC · 5 prefixes
- MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MOC · 4 prefixes
- NEW CINGULAR WIRELESS PCS, LLC - ILWireless · 3 prefixes
- CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MOWireless · 2 prefixes
- TELEPORT COMMUNICATIONS AMERICA, LLC - MOC · 2 prefixes
About area code 636
- Serves
- Missouri
- Time zone
- Central
- In service since
- 1999-05-22
- Overlay
- No
Source: NANPA numbering records, refreshed weekly.
Spam calls from 636? What to know
Seeing repeated missed calls from 636 numbers you don't recognize is the classic signature of neighbor-spoofing robocall campaigns. The caller isn't necessarily in Missouri — spoofing software displays whatever digits the campaign chooses. Never call unknown numbers back; look them up first, and report unwanted calls to the FCC to build the public record.
Area code 636 FAQs
Where is area code 636?
Area code 636 serves Missouri, in the Central time zone. It has been in service since 1999.
Why do I keep getting calls from 636 numbers?
Robocallers use "neighbor spoofing" — displaying a number with a local area code to make you more likely to answer. A call showing area code 636 may not originate from Missouri at all. Look up the full 10-digit number on this site to see its complaint history before calling back.
Are 636 numbers safe to call back?
Area codes themselves are neither safe nor unsafe — 636 contains millions of legitimate lines alongside any spoofed or spam numbers. The FCC has logged 1,686 unwanted-call complaints against 1,366 distinct 636 numbers in our current data window. Check the specific number's report page before returning a missed call.