970 Area Code: Fort Collins, Colorado
Area code 970 serves Fort Collins, Greeley and Grand Junction, Colorado in the Mountain time zone, in service since 1995. Consumers have filed 7,606 unwanted-call complaints against 6,228 different 970 numbers, 859 of them with the FTC in the last 30 days. Look up the exact number that called you below.
Area code 970 at a glance
- State
- Colorado
- Main cities
- Fort Collins, Greeley, Grand Junction, Loveland, Durango, Vail + 110 more
- Counties
- Larimer County, Weld County, Mesa County, Eagle County + 27 more
- Local time
- —Mountain
- In service since
- April 2, 1995
- Split from
- 303
- Overlay code
- 748 (2025)
- Local dialing
- 10 digits (area code + number)
- Exchanges
- 120 rate centers, 786 prefixes
Sources: NANPA area code and central office code records (refreshed weekly); cities and counties matched from US Census Bureau and USGS place names.
Most-reported 970 numbers
Ranked by FTC Do Not Call complaints this month, then all-time FTC and FCC complaints. Only numbers with enough complaints for a full report page are listed. Click one for what it was reported for and where.
- (970) 303-2486Impostor (government, business, family)13 this month2026-10-20
- (970) 303-2044Impostor (government, business, family)8 this month2026-10-20
- (970) 782-73728 this month2026-10-16
- (970) 665-3768Debt reduction5 this month2026-10-09
- (970) 987-1914Home improvement & cleaning5 this month2026-09-24
- (970) 303-2482Impostor (government, business, family)17 reports2026-08-17
- (970) 707-83980 reports
- (970) 707-85410 reports
What calls from 970 numbers are about
2,468 FTC Do Not Call complaints about 970 numbers since Jul 24. The most common named subject is debt-relief pitches, at 31% of complaints (92% of those were recorded messages). Overall, 80% of callers who answered said the call was a robocall.
FTC complaint subjects
- Other / unspecified85835%
- Debt reduction77631%
- Dropped call / no message30412%
- No subject given1667%
- Impostor (government, business, family)1637%
- Medical & prescriptions733%
- Warranties & protection plans592%
FCC complaints by call type, last 2 years
- Prerecorded Voice39159%
- Live Voice22234%
- Text Message467%
Live-voice calls are from a person; prerecorded calls are robocalls.
When 970 spam calls come in
31% of complaints that give a call time describe calls between 1pm and 4pm. 92% came Monday to Friday, most on Tuesdays, the pattern of call-center robocall campaigns that run on business hours. Times are as consumers reported them to the FTC.
By hour of the day
By day of the week
Is it getting worse?
842 FTC complaints about 970 numbers in the last four weeks, up 16% on the four weeks before. FCC complaints about 970 numbers peaked in 2021 (684); the FTC's daily Do Not Call data has carried most of the volume since mid-2026.
FTC complaints per week
FCC complaints per year
Years shown as '15 to '26; the current year is partial.
Who gets these calls
Only 43% of the FTC complaints about 970 numbers came from Colorado residents; the most came from Florida, California and Texas. 970 numbers are being used for nationwide campaigns, so the area code says little about where the caller is.
Where complainants live
- Colorado1,07043%
- Florida1416%
- California1406%
- Texas1255%
- New York833%
What people with 970 numbers report
People whose own number starts with 970 filed 2,312 FTC complaints since Jul 24. 39% were about calls showing another 970 number. The most common named subject was debt-relief pitches.
Area codes on the calls they reported
- 970 (same code)89439%
- 7201055%
- 888 (toll-free)904%
- 833 (toll-free)824%
- 719753%
Likely campaigns using 970 numbers
Groups of numbers that drew the same FTC complaint in the same pattern over the last 60 days. The grouping is statistical and doesn't identify who is calling.
Busiest 970 prefixes this month
FTC complaints in the last 30 days, grouped by the first six digits. When one prefix collects complaints about many different numbers, a campaign is usually cycling through that block. The carrier is who NANPA assigned the prefix to, not who made the calls.
Carriers operating in 970
NANPA has assigned 786 970 prefixes (NPA-NXX central-office codes) across 120 rate centers: 28% to wireless carriers, 70% to landline and VoIP operators; 68% are pooled blocks shared by several carriers. 20 prefixes were assigned in the last 12 months (newest 2026-10-16). The carrier holding a prefix is who the number was issued through. It says nothing about who is calling, since caller ID is routinely spoofed.
| Carrier | Type | Prefixes | Rate centers | Newest assignment |
|---|---|---|---|---|
| Qwest (CenturyLink / Lumen) | Incumbent landline (ILEC) | 189(24%) | 61 | 2020-04-15 |
| Onvoy (Sinch) | Competitive / VoIP (CLEC) | 99(13%) | 69 | 2026-10-16 |
| Verizon Wireless (Cellco Partnership) | Wireless | 77(10%) | 18 | 2026-08-21 |
| T-Mobile USA | Wireless | 70(9%) | 12 | 2025-12-03 |
| AT&T Mobility (New Cingular Wireless PCS) | Wireless | 54(7%) | 23 | 2025-10-30 |
| Level 3 (Lumen) | Competitive / VoIP (CLEC) | 47(6%) | 25 | 2023-02-13 |
| Ton80 Communications, LLC | Competitive / VoIP (CLEC) | 22(3%) | 22 | 2022-03-24 |
| CenturyLink (Lumen) | Incumbent landline (ILEC) | 21(3%) | 20 | — |
| Union Telephone Company | Incumbent landline (ILEC) | 17(2%) | 15 | 2012-05-08 |
| Bandwidth.com | Competitive / VoIP (CLEC) | 16(2%) | 15 | 2026-04-14 |
| Commio, LLC | Competitive / VoIP (CLEC) | 14(2%) | 14 | 2024-03-12 |
| Peerless Network | Competitive / VoIP (CLEC) | 14(2%) | 14 | 2016-03-09 |
Largest rate centers (exchanges) by prefixes: Fort Collins (96), Greeley (62), Grand Junction (57), Loveland (36), Durango (29), Vail (24), Glenwood Springs (21), Montrose (19), Aspen (17), Dillon (17). Source: NANPA Central Office Code Utilized Assignments (public, refreshed weekly).
What to do about calls from 970 numbers
Before you call back
- Debt reduction is the top named complaint here. Don't pay upfront fees for debt relief; the FTC's Telemarketing Sales Rule bans them. Talk to your lender or a nonprofit credit counselor instead. Read about debt-relief robocalls.
- Look up the full number above. A missed call from 970 with no voicemail is usually a robocall; anyone who needs you will leave a message.
- Block repeat callers: iPhone, Android, or your carrier's free filter (Verizon, AT&T, T-Mobile).
Report it in Colorado
- Unwanted sales calls and robocalls: donotcall.gov (FTC). Scams and fraud: ReportFraud.ftc.gov.
- Spoofing, texts and call-blocking problems: FCC consumer complaints.
- State complaints: Colorado Attorney General.
- 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.
Your FTC and FCC reports are published (without your name or number) in the datasets this page is built from. How to report unwanted calls.
Area code 970: questions answered from the data
Where is area code 970?
Area code 970 serves Fort Collins, Greeley and Grand Junction, Colorado, covering Larimer County, Weld County and Mesa County and 28 more counties. It has been in service since April 2, 1995. It was split from area code 303.
What time zone is area code 970 in?
Area code 970 is in the Mountain time zone (UTC−7, or UTC−6 during daylight saving time). The current local time is shown at the top of this page.
Which area codes overlay 970?
748 (in service 2025) serves the same area as 970. New numbers there can be issued with any of these codes, and local calls need all 10 digits. A spoofed call can display any of them.
What are calls from 970 numbers usually about?
Since Jul 24, consumers filed 2,468 FTC Do Not Call complaints about 970 numbers. The most common named subject was debt-relief pitches: 31% of complaints, 92% of them recorded messages. Across all subjects, 80% of callers who answered the question said the call was a robocall.
When do 970 spam calls happen?
31% of the complaints that give a call time describe calls between 1pm and 4pm, and 92% came on weekdays, most often on Tuesday. Times are as consumers reported them.
Are calls from 970 numbers really local?
Not necessarily. Only 43% of the FTC complaints about 970 numbers came from Colorado residents; the most came from Florida, California and Texas. 970 numbers are being used for nationwide campaigns, so the area code says little about where the caller is.
Are 970 robocalls increasing?
In the four weeks to Oct 20, consumers filed 842 FTC complaints about 970 numbers, 16% more than the four weeks before.
How do I report a 970 scam call in Colorado?
Report unwanted sales calls and robocalls to the FTC at donotcall.gov, and scams to ReportFraud.ftc.gov. The FCC takes complaints at consumercomplaints.fcc.gov. In Colorado, the Colorado Attorney General also handles consumer complaints about scam calls. Reports feed the public data this page is built from.
Other Colorado area codes
Sources: FTC Do Not Call complaints (unverified consumer reports), published every weekday and available here from Jul 24; FCC Consumer Complaint Data, public record, imported nightly; NANPA numbering records. A number appearing here means consumers reported calls that displayed it. Caller ID can be spoofed.