WhoCalledLookupUS

Robocalls in Colorado

Colorado consumers have filed 33,940 unwanted-call complaints with the FCC against 28,498 different phone numbers between 2014-01-01 and 2026-11-03 — 3.4% of all state-attributed complaints, ranking 8 nationally. Complaints in the last 12 months are up 196% on the 12 months before that.

33,940
FCC complaints
16,855
FTC DNC reports
5,029
FTC reports, last 30 days
#8
National rank (FCC)

What Colorado residents are reporting

16,855 FTC Do Not Call complaints from Colorado since Jul 24. The most common named subject is debt reduction, at 26%. 75% of complainants who answered said the call was a recorded message.

Complaint subjects

  • Other / unspecified7,03542%
  • Debt reduction4,29926%
  • Dropped call / no message1,4148%
  • Impostor (government, business, family)1,3798%
  • Medical & prescriptions8195%
  • No subject given6714%
  • Home improvement & cleaning4233%

When the calls come (as reported)

28% between 1pm and 4pm; 94% on weekdays, most on Wednesdays.

Week by week

5,130 complaints from Colorado in the last four weeks, up 11% on the four weeks before.

Neighbor spoofing in Colorado

34% of the calls Colorado residents reported showed the resident's own area code, and 42% showed a Colorado area code of any kind. 22% came from toll-free numbers. Most calls here don't pretend to be local, so a familiar area code is less of a warning sign than in states where spoofing dominates. How neighbor spoofing works.

What the caller ID showed

  • The resident's own area code5,80934%
  • Another Colorado area code1,3428%
  • Toll-free number3,63122%
  • Out-of-state area code6,07336%

Area codes on the calls

  • 303 (Colorado)2,53515%
  • 720 (Colorado)1,96712%
  • 970 (Colorado)1,3278%
  • 719 (Colorado)1,2177%
  • 8337504%
  • 8776464%

Colorado area codes

Each county is coloured by the area code that holds most of its phone prefixes. Overlay codes share one territory and one colour. Complaint counts are from Colorado residents since Jul 24.

Map of Colorado counties coloured by area code: 748/970, 719, 303/720/983
Built from NANPA prefix assignments and US Census Bureau county boundaries. Area codes follow exchange boundaries, so county colours are approximate at the edges.
Area codeResidents' complaintsCalls showing it
303 · 720 · 9839,2894,607
7192,7511,217
748 · 9702,3751,327

Likely campaigns reaching Colorado

11% of Colorado's FTC complaints in the campaign window match one of these statistical groupings: many numbers, the same complaint, the same pattern. They don't identify who is calling.

Colorado complaint volume by year

Unwanted-call complaints filed with the FCC by Colorado consumers each year. The shape of this curve reflects both actual call volume and how aware consumers are that the FCC complaint centre exists.

Area codes most reported in Colorado

The displayed area code of numbers reported by Colorado consumers — often, but not always, a local code, because spoofing favours familiar-looking numbers.

How the calls reached Colorado

Prerecorded Voice
15,118
Live Voice
9,544
Abandoned Calls
6,856
Text Message
2,248
Autodialed Live Voice Call
149
Email
2
Wireless (cell phone)
17,321
Wired
9,945
Internet (VOIP)
6,664

Numbers Colorado residents reported this month

The numbers Colorado consumers reported most to the FTC's Do Not Call Registry in the last 30 days — 5,029 reports in all, 756 of them this week; 75% were described as robocalls. Click a number for what it was reported for.

What Colorado residents were called about this month

  • Other / unspecified
    1,995
  • Debt reduction
    1,323
  • Impostor (government, business, family)
    460
  • Dropped call / no message
    378
  • Medical & prescriptions
    252
  • No subject given
    238
  • Home improvement & cleaning
    107
  • Warranties & protection plans
    107

Numbers most reported to the FCC by Colorado consumers

Ranked by how many Colorado FCC complaints name them, limited to the last five years. A number appearing here means people in Colorado reported receiving calls that displayed it — not that its owner placed them.

Do Not Call protection in Colorado

Colorado is one of the states that maintains its own Do Not Call registry alongside the federal National Do Not Call Registry, so telemarketers calling Colorado numbers are expected to check both lists. Registering on the federal list at donotcall.gov is free and never expires; the state list is administered separately and may have its own registration process and renewal period.

Whatever your state does, the federal National Do Not Call Registry applies, and the Telephone Consumer Protection Act gives you a private right of action against certain unlawful calls. Report unwanted calls at the FCC complaint centre and fraud at ReportFraud.ftc.gov. In Colorado, the Colorado Attorney General also takes consumer complaints about scam calls.

Do Not Call classification per National Association of Attorneys General — history of Do Not Call. This is general information, not legal advice.

Colorado robocall FAQs

What are Colorado robocalls about right now?

Since 2026-07-24, Colorado residents filed 16,855 FTC Do Not Call complaints. The most common named subject was debt reduction, at 26% of complaints, and 75% of callers who answered said the call was a recorded message.

Are spam calls in Colorado using local numbers?

Often. 34% of the calls Colorado residents reported to the FTC showed the resident's own area code, and 42% showed a Colorado area code of any kind; 22% came from toll-free numbers. A local-looking number is no evidence the caller is local.

When do robocalls hit Colorado?

28% of complaints that give a call time describe calls between 1pm and 4pm local time as reported.

How many robocall complaints do Colorado residents file?

Colorado consumers have filed 33,940 unwanted-call complaints with the FCC against 28,498 distinct phone numbers, covering 2014-01-01 to 2026-11-03. That is 3.4% of all state-attributed complaints in the dataset, ranking Colorado 8 among US states and territories by complaint volume.

Does Colorado have its own Do Not Call list?

Colorado is one of the states that maintains its own Do Not Call registry alongside the federal National Do Not Call Registry, so telemarketers calling Colorado numbers are expected to check both lists. Registering on the federal list at donotcall.gov is free and never expires; the state list is administered separately and may have its own registration process and renewal period.

Where do the calls reported in Colorado come from?

The FCC records the state the person filing the complaint was in, not where the caller was. Because caller ID is easily spoofed, a call reported in Colorado may have been placed from anywhere in the world and may have displayed a Colorado number that belongs to an uninvolved person. Area code alone tells you nothing reliable about a caller's location.

What kind of calls are reported most in Colorado?

Prerecorded Voice is the most-reported category in Colorado, accounting for 15,118 of the 33,940 complaints (45%). Live Voice is second with 9,544.

Complaint figures from the FCC Consumer Complaint Data Center, imported nightly, and FTC Do Not Call complaints (unverified consumer reports), published every weekday. The state recorded is the state the complainant filed from.