WhoCalledLookupUS

Likely campaign · statistical grouping

Medical and prescription live-caller campaign on local numbers

One pattern, 645 numbers: between Jul 31 and Sep 28, 666 FTC Do Not Call complaints about medical & prescriptions calls came from 645 different local numbers in 30 prefix blocks across 21 area codes. 11% of complainants said it was a recorded message. 98% of the numbers were reported once and not again.

The evidence

Every required test passes, so this grouping is listed and linked from number and area-code pages.

  • Many numbersrequiredYes: 645 numbers, 666 complaints (needs 50+ and 100+).
  • Concentrated in prefix blocksrequiredYes: the median block has 11× as many reported numbers as a typical reported block in its area code (needs 10×).
  • Same complaint subjectrequiredYes: 94% of the blocks' informative complaints name medical and prescription calls (needs 80%).
  • Still activerequiredYes: last complaint 2026-09-28 (needs one within 14 days of the newest FTC data, 2026-09-28).
  • Reported by many peoplerequiredYes: the largest single source (one town and phone area code) filed 8% of the complaints (must be under 25%).
  • Numbers used briefly, then droppedsupportingYes: 98% of the numbers drew exactly one complaint in 60 days, the pattern of a dialer cycling through fresh caller IDs.
  • Live callerssupportingYes: 11% of complainants who answered said the call was a recorded message.
  • Matching scripts in community reportssupportingNo community reports on these numbers yet. If you got one of these calls, add what the caller said on the number's page.

How it runs

Each week brings a fresh set of numbers: the bars on the right count numbers seen for the first time. 32% of timed complaints fall between 3pm and 6pm; 100% come on weekdays.

Complaints per week

Numbers seen for the first time, per week

By hour of the day (as reported)

Where complainants live

13 states and territories in all.

  • Tennessee10616%
  • Ohio10015%
  • Texas9314%
  • North Carolina6910%
  • Virginia6410%
  • Kentucky538%
  • Pennsylvania436%
  • Missouri345%

Area codes on the caller ID

Numbers in the campaign's blocks, by area code (21 in all).

  • 615Nashville86 numbers · 3 blocks
  • 540Roanoke63 numbers · 2 blocks
  • 440Willoughby62 numbers · 3 blocks
  • 713Houston57 numbers · 3 blocks
  • 859Lexington52 numbers · 2 blocks
  • 910Fayetteville44 numbers · 1 block
  • 816Kansas City33 numbers · 1 block
  • 814Erie26 numbers · 2 blocks
  • 336Greensboro25 numbers · 1 block
  • 319Cedar Rapids23 numbers · 1 block

Busiest prefix blocks

The first six digits shared by the numbers. “Typical block” is the median number of reported numbers per reported block in the same area code. The carrier is who NANPA assigned the block to, not who made the calls.

BlockNumbersComplaints
(540) 759-xxxx5354
(910) 728-xxxx4444
(615) 633-xxxx4041
(859) 832-xxxx3940
(816) 627-xxxx3334
(440) 328-xxxx2829
(713) 965-xxxx2829
(336) 957-xxxx2525
(615) 651-xxxx2525
(319) 766-xxxx2323
(608) 631-xxxx2324
(567) 303-xxxx2121
(615) 614-xxxx2121
(316) 251-xxxx2020
(440) 359-xxxx2020

+ 15 more blocks.

Numbers with full report pages

1 of the 645 numbers have enough complaints for their own page. The rest drew one or two complaints each, which is the point: the numbers change faster than any block list.

If these calls reach you

  • Don't confirm your Medicare or insurance number to a caller. Medicare won't cold-call you to sell braces, test kits or plans.
  • Don't press a key to “opt out”. It tells the dialer your line is answered.
  • Because the number changes every time, blocking single numbers won't keep up. Turn on your carrier's free spam filter: iPhone, Android, Verizon, AT&T, T-Mobile.
  • Report it at donotcall.gov. Every report is a row in the data this page is built from.

Questions about this campaign

Is this one company calling?

We can't tell, and we don't name anyone. What the public FTC data shows is 645 different local numbers in 30 prefix blocks drawing 666 complaints about medical & prescriptions calls between 2026-07-31 and 2026-09-28, with the same call style and timing. That is how a single operation cycling caller IDs looks, but several operations using the same dialing method would look the same.

Why does each number only get one or two complaints?

98% of the numbers drew exactly one complaint in 60 days (1.0 per number on average). Robocall dialers display a fresh number, often spoofed, for each batch of calls, so blocking one number rarely stops the next call. Carrier spam filters and call-blocking apps work on the pattern instead.

When do these calls come in?

32% of complaints that give a time describe calls between 3pm and 6pm, and 100% came Monday to Friday, most on Fridays.

How do I stop these calls?

Don't confirm your Medicare or insurance number to a caller. Medicare won't cold-call you to sell braces, test kits or plans. Don't press a number to be removed; it confirms your line is live. Turn on your carrier's spam filter, block the number, and report the call at donotcall.gov so it's counted in the public data.

Other likely campaigns

Source: FTC Do Not Call complaints (unverified consumer reports), last 60 days to 2026-09-28, recalculated every 6 hours. Area-code and carrier data from NANPA.