Continuously updated intelligence
Live Spam and Robocall Trends
Track estimated US robocall volume, the phone numbers drawing the most recent FTC and FCC complaints, and the infrastructure patterns behind the current wave.
Updated September 21, 2026 · FTC data through July 30, 2026 · FCC data through August 1, 2026
National total · 2026 to date
28,815,530,300 estimated robocalls placed
Estimated nationwide volume through July 2026 from the YouMail Robocall Index.
YouMail estimates total US robocall volume by extrapolating from tens of millions of calls made to its users. It is an industry estimate, not an official government count.
Current signal board
What stands out now
Numbers drawing complaints now
Most-reported phone numbers in the current windows
Ranked by FTC complaints from the latest 30 days plus FCC originating-number mentions from the latest 180 days. Click any number to inspect its public evidence.
| Rank | Phone number | Recent activity | FTC · 30 days | FCC caller · 180 days | Historical total | Investigation |
|---|---|---|---|---|---|---|
| 1 | (321) 499-1734 | 606 | 602 | 4 | 967 | Advertiser trail |
| 2 | (855) 994-1955 | 380 | 376 | 4 | 438 | Advertiser trail |
| 3 | (520) 668-4313 | 292 | 292 | 0 | 292 | Volume spike mapped |
| 4 | (833) 662-5708 | 241 | 234 | 7 | 278 | Advertiser trail |
| 5 | (369) 216-6437 | 187 | 187 | 0 | 249 | Advertiser trail |
| 6 | (877) 578-4143 | 182 | 182 | 0 | 191 | Advertiser trail |
| 7 | (309) 301-1881 | 161 | 161 | 0 | 229 | Advertiser trail |
| 8 | (207) 204-5129 | 158 | 156 | 2 | 178 | Advertiser trail |
| 9 | (331) 248-4967 | 146 | 146 | 0 | 170 | Advertiser trail |
| 10 | (877) 556-9255 | 136 | 129 | 7 | 548 | Advertiser trail |
These are unverified public reporting signals, not findings about the owner or current user of a phone number. Caller ID can be spoofed.
Continuous investigation
What we are learning about the leading numbers
CallSlayer follows the strongest numbers across public complaints, reviewed message links, caller-name and carrier intelligence, FCC provider records, approved web research, and matching community submissions. Facts, supported connections, and unresolved questions remain visibly separate.
Investigation 1(321) 499-1734 Advertiser trail
This number is making serious noise. 606 recent public complaints or caller-number mentions put it on the board, with 967 reports or mentions in the available history.
Why this number matters
The number appears deeper in the pitch
FCC complaints identify it 361 times as an advertiser or business contact, separately from caller-ID reports. That can be more useful than the displayed caller ID when tracing who benefited from the contact.
This number recently lit up
602 FTC reports landed in the latest 30-day window after none in the preceding window.
Notable signal
CallSlayer scores the available evidence at 45 out of 100 based on strength, diversity, recency, and investigative significance. This is not a probability of fraud or a finding of wrongdoing.
Campaign pattern
- New burst: 602 FTC reports appeared in the latest 30-day window after none in the preceding window.
- The busiest day in the current window was July 10, 2026, with 74 FTC reports.
- 90% of its 602 FTC reports were identified by consumers as recorded messages or robocalls.
- The CallSlayer Evidence Signal is 45 out of 100 (notable signal). It measures the available evidence, not the probability of fraud.
The displayed caller ID may be only one layer of the operation. FCC reports separately identify this number as an advertiser or business contact 361 times, making the advertiser trail a priority.
The available evidence narrows the infrastructure and identity leads, but it does not yet establish the person or organization that placed every call or text.Open questions: what could crack this one
If you received this call or text, the most useful missing clues are:
- the name used in the greeting or voicemail
- any URL or short link in a related text
- what product, debt, donation, benefit, or threat the caller mentioned
- a screenshot, voicemail transcript, or exact script fragment
Full technical evidence recordCanonical number enrichment, with received-call authentication only when available
Canonical enrichment pending: the next top-number refresh will retry this number.
Optional received-call evidence: No received-call authentication evidence is available for this number. STIR/SHAKEN is attached to individual received calls and cannot be manufactured by a number lookup.
Evidence labels apply to individual claims, not the number as a whole. Government complaints are consumer allegations, caller ID can be spoofed, and associations do not automatically prove who placed a particular contact.
Investigation 2(855) 994-1955 Advertiser trail
This number is making serious noise. 380 recent public complaints or caller-number mentions put it on the board, with 438 reports or mentions in the available history.
Why this number matters
The number appears deeper in the pitch
FCC complaints identify it 58 times as an advertiser or business contact, separately from caller-ID reports. That can be more useful than the displayed caller ID when tracing who benefited from the contact.
This number recently lit up
376 FTC reports landed in the latest 30-day window after none in the preceding window.
Notable signal
CallSlayer scores the available evidence at 43 out of 100 based on strength, diversity, recency, and investigative significance. This is not a probability of fraud or a finding of wrongdoing.
Campaign pattern
- New burst: 376 FTC reports appeared in the latest 30-day window after none in the preceding window.
- The busiest day in the current window was July 8, 2026, with 63 FTC reports.
- 94% of its 376 FTC reports were identified by consumers as recorded messages or robocalls.
- The CallSlayer Evidence Signal is 43 out of 100 (notable signal). It measures the available evidence, not the probability of fraud.
The displayed caller ID may be only one layer of the operation. FCC reports separately identify this number as an advertiser or business contact 58 times, making the advertiser trail a priority.
The available evidence narrows the infrastructure and identity leads, but it does not yet establish the person or organization that placed every call or text.Open questions: what could crack this one
If you received this call or text, the most useful missing clues are:
- the name used in the greeting or voicemail
- any URL or short link in a related text
- what product, debt, donation, benefit, or threat the caller mentioned
- a screenshot, voicemail transcript, or exact script fragment
Full technical evidence recordCanonical number enrichment, with received-call authentication only when available
Canonical enrichment pending: the next top-number refresh will retry this number.
Optional received-call evidence: No received-call authentication evidence is available for this number. STIR/SHAKEN is attached to individual received calls and cannot be manufactured by a number lookup.
Evidence labels apply to individual claims, not the number as a whole. Government complaints are consumer allegations, caller ID can be spoofed, and associations do not automatically prove who placed a particular contact.
Investigation 3(520) 668-4313 Volume spike mapped
This number is making serious noise. 292 recent public complaints or caller-number mentions put it on the board, with 292 reports or mentions in the available history.
Why this number matters
This number recently lit up
292 FTC reports landed in the latest 30-day window after none in the preceding window.
Campaign pattern
- New burst: 292 FTC reports appeared in the latest 30-day window after none in the preceding window.
- The busiest day in the current window was July 9, 2026, with 230 FTC reports.
- 100% of its 292 FTC reports were identified by consumers as recorded messages or robocalls.
- The CallSlayer Evidence Signal is 32 out of 100 (emerging signal). It measures the available evidence, not the probability of fraud.
The abrupt complaint burst is consistent with a newly activated campaign or a spoofed caller ID being used at scale.
The available evidence narrows the infrastructure and identity leads, but it does not yet establish the person or organization that placed every call or text.Open questions: what could crack this one
If you received this call or text, the most useful missing clues are:
- the name used in the greeting or voicemail
- any URL or short link in a related text
- the callback or payment number supplied during the call
- what product, debt, donation, benefit, or threat the caller mentioned
Full technical evidence recordCanonical number enrichment, with received-call authentication only when available
Canonical enrichment pending: the next top-number refresh will retry this number.
Optional received-call evidence: No received-call authentication evidence is available for this number. STIR/SHAKEN is attached to individual received calls and cannot be manufactured by a number lookup.
Evidence labels apply to individual claims, not the number as a whole. Government complaints are consumer allegations, caller ID can be spoofed, and associations do not automatically prove who placed a particular contact.
Investigation 4(833) 662-5708 Advertiser trail
This number is making serious noise. 241 recent public complaints or caller-number mentions put it on the board, with 278 reports or mentions in the available history.
Why this number matters
The number appears deeper in the pitch
FCC complaints identify it 36 times as an advertiser or business contact, separately from caller-ID reports. That can be more useful than the displayed caller ID when tracing who benefited from the contact.
This number recently lit up
234 FTC reports landed in the latest 30-day window after none in the preceding window.
Notable signal
CallSlayer scores the available evidence at 42 out of 100 based on strength, diversity, recency, and investigative significance. This is not a probability of fraud or a finding of wrongdoing.
Campaign pattern
- New burst: 234 FTC reports appeared in the latest 30-day window after none in the preceding window.
- The busiest day in the current window was July 2, 2026, with 68 FTC reports.
- 91% of its 234 FTC reports were identified by consumers as recorded messages or robocalls.
- The CallSlayer Evidence Signal is 42 out of 100 (notable signal). It measures the available evidence, not the probability of fraud.
The displayed caller ID may be only one layer of the operation. FCC reports separately identify this number as an advertiser or business contact 36 times, making the advertiser trail a priority.
The available evidence narrows the infrastructure and identity leads, but it does not yet establish the person or organization that placed every call or text.Open questions: what could crack this one
If you received this call or text, the most useful missing clues are:
- the name used in the greeting or voicemail
- any URL or short link in a related text
- what product, debt, donation, benefit, or threat the caller mentioned
- a screenshot, voicemail transcript, or exact script fragment
Full technical evidence recordCanonical number enrichment, with received-call authentication only when available
Canonical enrichment pending: the next top-number refresh will retry this number.
Optional received-call evidence: No received-call authentication evidence is available for this number. STIR/SHAKEN is attached to individual received calls and cannot be manufactured by a number lookup.
Evidence labels apply to individual claims, not the number as a whole. Government complaints are consumer allegations, caller ID can be spoofed, and associations do not automatically prove who placed a particular contact.
Investigation 5(369) 216-6437 Advertiser trail
This number is making serious noise. 187 recent public complaints or caller-number mentions put it on the board, with 249 reports or mentions in the available history.
Why this number matters
The number appears deeper in the pitch
FCC complaints identify it 62 times as an advertiser or business contact, separately from caller-ID reports. That can be more useful than the displayed caller ID when tracing who benefited from the contact.
This number recently lit up
187 FTC reports landed in the latest 30-day window after none in the preceding window.
Campaign pattern
- New burst: 187 FTC reports appeared in the latest 30-day window after none in the preceding window.
- The busiest day in the current window was July 29, 2026, with 116 FTC reports.
- 90% of its 187 FTC reports were identified by consumers as recorded messages or robocalls.
- The CallSlayer Evidence Signal is 38 out of 100 (emerging signal). It measures the available evidence, not the probability of fraud.
The displayed caller ID may be only one layer of the operation. FCC reports separately identify this number as an advertiser or business contact 62 times, making the advertiser trail a priority.
The available evidence narrows the infrastructure and identity leads, but it does not yet establish the person or organization that placed every call or text.Open questions: what could crack this one
If you received this call or text, the most useful missing clues are:
- the name used in the greeting or voicemail
- any URL or short link in a related text
- what product, debt, donation, benefit, or threat the caller mentioned
- a screenshot, voicemail transcript, or exact script fragment
Full technical evidence recordCanonical number enrichment, with received-call authentication only when available
Canonical enrichment pending: the next top-number refresh will retry this number.
Optional received-call evidence: No received-call authentication evidence is available for this number. STIR/SHAKEN is attached to individual received calls and cannot be manufactured by a number lookup.
Evidence labels apply to individual claims, not the number as a whole. Government complaints are consumer allegations, caller ID can be spoofed, and associations do not automatically prove who placed a particular contact.
Investigation 6(877) 578-4143 Advertiser trail
This number is making serious noise. 182 recent public complaints or caller-number mentions put it on the board, with 191 reports or mentions in the available history.
Why this number matters
The number appears deeper in the pitch
FCC complaints identify it 9 times as an advertiser or business contact, separately from caller-ID reports. That can be more useful than the displayed caller ID when tracing who benefited from the contact.
This number recently lit up
182 FTC reports landed in the latest 30-day window after none in the preceding window.
Campaign pattern
- New burst: 182 FTC reports appeared in the latest 30-day window after none in the preceding window.
- The busiest day in the current window was July 6, 2026, with 47 FTC reports.
- 89% of its 182 FTC reports were identified by consumers as recorded messages or robocalls.
- The CallSlayer Evidence Signal is 38 out of 100 (emerging signal). It measures the available evidence, not the probability of fraud.
The displayed caller ID may be only one layer of the operation. FCC reports separately identify this number as an advertiser or business contact 9 times, making the advertiser trail a priority.
The available evidence narrows the infrastructure and identity leads, but it does not yet establish the person or organization that placed every call or text.Open questions: what could crack this one
If you received this call or text, the most useful missing clues are:
- the name used in the greeting or voicemail
- any URL or short link in a related text
- what product, debt, donation, benefit, or threat the caller mentioned
- a screenshot, voicemail transcript, or exact script fragment
Full technical evidence recordCanonical number enrichment, with received-call authentication only when available
Canonical enrichment pending: the next top-number refresh will retry this number.
Optional received-call evidence: No received-call authentication evidence is available for this number. STIR/SHAKEN is attached to individual received calls and cannot be manufactured by a number lookup.
Evidence labels apply to individual claims, not the number as a whole. Government complaints are consumer allegations, caller ID can be spoofed, and associations do not automatically prove who placed a particular contact.
Investigation 7(309) 301-1881 Advertiser trail
This number is making serious noise. 161 recent public complaints or caller-number mentions put it on the board, with 229 reports or mentions in the available history.
Why this number matters
The number appears deeper in the pitch
FCC complaints identify it 68 times as an advertiser or business contact, separately from caller-ID reports. That can be more useful than the displayed caller ID when tracing who benefited from the contact.
This number recently lit up
161 FTC reports landed in the latest 30-day window after none in the preceding window.
Campaign pattern
- New burst: 161 FTC reports appeared in the latest 30-day window after none in the preceding window.
- The busiest day in the current window was July 28, 2026, with 42 FTC reports.
- 88% of its 161 FTC reports were identified by consumers as recorded messages or robocalls.
- The CallSlayer Evidence Signal is 38 out of 100 (emerging signal). It measures the available evidence, not the probability of fraud.
The displayed caller ID may be only one layer of the operation. FCC reports separately identify this number as an advertiser or business contact 68 times, making the advertiser trail a priority.
The available evidence narrows the infrastructure and identity leads, but it does not yet establish the person or organization that placed every call or text.Open questions: what could crack this one
If you received this call or text, the most useful missing clues are:
- the name used in the greeting or voicemail
- any URL or short link in a related text
- what product, debt, donation, benefit, or threat the caller mentioned
- a screenshot, voicemail transcript, or exact script fragment
Full technical evidence recordCanonical number enrichment, with received-call authentication only when available
Canonical enrichment pending: the next top-number refresh will retry this number.
Optional received-call evidence: No received-call authentication evidence is available for this number. STIR/SHAKEN is attached to individual received calls and cannot be manufactured by a number lookup.
Evidence labels apply to individual claims, not the number as a whole. Government complaints are consumer allegations, caller ID can be spoofed, and associations do not automatically prove who placed a particular contact.
Investigation 8(207) 204-5129 Advertiser trail
This number is making serious noise. 158 recent public complaints or caller-number mentions put it on the board, with 178 reports or mentions in the available history.
Why this number matters
The number appears deeper in the pitch
FCC complaints identify it 20 times as an advertiser or business contact, separately from caller-ID reports. That can be more useful than the displayed caller ID when tracing who benefited from the contact.
This number recently lit up
156 FTC reports landed in the latest 30-day window after none in the preceding window.
Notable signal
CallSlayer scores the available evidence at 41 out of 100 based on strength, diversity, recency, and investigative significance. This is not a probability of fraud or a finding of wrongdoing.
Campaign pattern
- New burst: 156 FTC reports appeared in the latest 30-day window after none in the preceding window.
- The busiest day in the current window was July 24, 2026, with 17 FTC reports.
- 86% of its 156 FTC reports were identified by consumers as recorded messages or robocalls.
- The CallSlayer Evidence Signal is 41 out of 100 (notable signal). It measures the available evidence, not the probability of fraud.
The displayed caller ID may be only one layer of the operation. FCC reports separately identify this number as an advertiser or business contact 20 times, making the advertiser trail a priority.
The available evidence narrows the infrastructure and identity leads, but it does not yet establish the person or organization that placed every call or text.Open questions: what could crack this one
If you received this call or text, the most useful missing clues are:
- the name used in the greeting or voicemail
- any URL or short link in a related text
- what product, debt, donation, benefit, or threat the caller mentioned
- a screenshot, voicemail transcript, or exact script fragment
Full technical evidence recordCanonical number enrichment, with received-call authentication only when available
Canonical enrichment pending: the next top-number refresh will retry this number.
Optional received-call evidence: No received-call authentication evidence is available for this number. STIR/SHAKEN is attached to individual received calls and cannot be manufactured by a number lookup.
Evidence labels apply to individual claims, not the number as a whole. Government complaints are consumer allegations, caller ID can be spoofed, and associations do not automatically prove who placed a particular contact.
Investigation 9(331) 248-4967 Advertiser trail
This number is making serious noise. 146 recent public complaints or caller-number mentions put it on the board, with 170 reports or mentions in the available history.
Why this number matters
The number appears deeper in the pitch
FCC complaints identify it 24 times as an advertiser or business contact, separately from caller-ID reports. That can be more useful than the displayed caller ID when tracing who benefited from the contact.
This number recently lit up
146 FTC reports landed in the latest 30-day window after none in the preceding window.
Campaign pattern
- New burst: 146 FTC reports appeared in the latest 30-day window after none in the preceding window.
- The busiest day in the current window was July 20, 2026, with 87 FTC reports.
- 90% of its 146 FTC reports were identified by consumers as recorded messages or robocalls.
- The CallSlayer Evidence Signal is 37 out of 100 (emerging signal). It measures the available evidence, not the probability of fraud.
The displayed caller ID may be only one layer of the operation. FCC reports separately identify this number as an advertiser or business contact 24 times, making the advertiser trail a priority.
The available evidence narrows the infrastructure and identity leads, but it does not yet establish the person or organization that placed every call or text.Open questions: what could crack this one
If you received this call or text, the most useful missing clues are:
- the name used in the greeting or voicemail
- any URL or short link in a related text
- what product, debt, donation, benefit, or threat the caller mentioned
- a screenshot, voicemail transcript, or exact script fragment
Full technical evidence recordCanonical number enrichment, with received-call authentication only when available
Canonical enrichment pending: the next top-number refresh will retry this number.
Optional received-call evidence: No received-call authentication evidence is available for this number. STIR/SHAKEN is attached to individual received calls and cannot be manufactured by a number lookup.
Evidence labels apply to individual claims, not the number as a whole. Government complaints are consumer allegations, caller ID can be spoofed, and associations do not automatically prove who placed a particular contact.
Investigation 10(877) 556-9255 Advertiser trail
This number is making serious noise. 136 recent public complaints or caller-number mentions put it on the board, with 548 reports or mentions in the available history.
Why this number matters
The number appears deeper in the pitch
FCC complaints identify it 401 times as an advertiser or business contact, separately from caller-ID reports. That can be more useful than the displayed caller ID when tracing who benefited from the contact.
This number recently lit up
129 FTC reports landed in the latest 30-day window after none in the preceding window.
Notable signal
CallSlayer scores the available evidence at 40 out of 100 based on strength, diversity, recency, and investigative significance. This is not a probability of fraud or a finding of wrongdoing.
Campaign pattern
- New burst: 129 FTC reports appeared in the latest 30-day window after none in the preceding window.
- The busiest day in the current window was July 8, 2026, with 13 FTC reports.
- 97% of its 129 FTC reports were identified by consumers as recorded messages or robocalls.
- The CallSlayer Evidence Signal is 40 out of 100 (notable signal). It measures the available evidence, not the probability of fraud.
The displayed caller ID may be only one layer of the operation. FCC reports separately identify this number as an advertiser or business contact 401 times, making the advertiser trail a priority.
The available evidence narrows the infrastructure and identity leads, but it does not yet establish the person or organization that placed every call or text.Open questions: what could crack this one
If you received this call or text, the most useful missing clues are:
- the name used in the greeting or voicemail
- any URL or short link in a related text
- what product, debt, donation, benefit, or threat the caller mentioned
- a screenshot, voicemail transcript, or exact script fragment
Full technical evidence recordCanonical number enrichment, with received-call authentication only when available
Canonical enrichment pending: the next top-number refresh will retry this number.
Optional received-call evidence: No received-call authentication evidence is available for this number. STIR/SHAKEN is attached to individual received calls and cannot be manufactured by a number lookup.
Evidence labels apply to individual claims, not the number as a whole. Government complaints are consumer allegations, caller ID can be spoofed, and associations do not automatically prove who placed a particular contact.
Infrastructure context
Area-code, carrier, and line-type patterns
Leading area codes
833 (10,369 recent) · 855 (5,859 recent) · 866 (5,838 recent) · 877 (5,634 recent) · 844 (5,140 recent)
Published carrier observations
Onvoy (498 numbers) · HD Carrier LLC (435 numbers) · Peerless Network (399 numbers) · Verizon Wireless (246 numbers) · Twilio - SMS/MMS-SVR (215 numbers)
Published line types
nonFixedVoip (1,313 numbers) · tollFree (1,165 numbers) · mobile (1,098 numbers) · landline (784 numbers) · fixedVoip (100 numbers)
How to interpret this
Carrier and line-type data can change after porting. Caller ID can be spoofed. These patterns narrow an investigation; they do not identify a caller by themselves.
Methodology and limits
Fresh, transparent, and deliberately cautious
Counts are aggregated from public FTC and FCC complaint datasets. A complaint is an unverified report, not a finding of wrongdoing.
Top-number dossiers combine public complaint aggregates, the complete sanitized number-enrichment contract, privacy-thresholded CallSlayer observations, separately reviewed Hunter web evidence, and explicitly approved caller-only transcript excerpts. Unreviewed transcripts, recipient speech, recordings, screenshots, accounts, cases, and visitor data are excluded.
The national volume figure is a YouMail industry estimate extrapolated from tens of millions of calls made to its users; it is not an official government census. FTC and FCC figures elsewhere on this page are consumer complaints or number mentions—not call volume. Lookup rankings are aggregate counts and contain no visitor identity.
The dashboard can change as source datasets and sanitized enrichment update. Weekly editions preserve exact prior states so movement can be audited instead of reconstructed.