Where is area code 748?

Area code 748 is in Colorado. Its number blocks are assigned in 11 rate centres; the largest places include Durango, Eagle, Estes Park, Fraser, Gilcrest and Greeley.

What time zone is area code 748?

Area code 748 is in Mountain Time.

Is area code 748 an overlay?

Yes. 748 shares its area with 970, so local calls need all 10 digits. It was added to relieve 970.

When did area code 748 start?

Area code 748 went into service on Jul 7, 2025, according to NANPA.

Are calls from area code 748 spam?

30 numbers in 748 have FTC Do Not Call complaints (31 in all), most often “Dropped call or no message”. Most numbers in an area code are ordinary lines, so look up the exact number that called you.

How do I check who called me from a 748 number?

Enter the full 10-digit number in the search box on this page, or go to canadial.com/lookup/748 followed by the 7 remaining digits.

Area code 748 — Colorado

Area code 748 is in Colorado; its 11 rate centres include Durango, Eagle, Estes Park, Fraser and Gilcrest. It overlays 970.

State: Colorado
Time zone: Mountain Time · now —
In service since: Jul 7, 2025
Overlay: Yes, with 970
Created from: 970
Number blocks: 23 assigned, 0 unassigned of 23 in use or listed
Largest block holders: Onvoy, LLC, Wide Voice, LLC and Ahoi LLC

Area code facts: NANPA, Nov 3, 2026. Blocks: NANPA's CO code and thousands-block assignments, Nov 3, 2026. A block is assigned to a carrier; with number portability a number may have moved since.

Cities and rate centres in 748

By number blocks assigned there, largest first (11 rate centres in all). Names in capitals, like XXXXXXXXXX, are NANPA rate centre abbreviations with no exact Census place match.

XXXXXXXXXX 13
DIR ASST 1
Durango 1
Eagle 1
Estes Park 1
Fraser 1
FT COLLINS 1
Gilcrest 1
Greeley 1
Ignacio 1
Mead 1

Carriers holding 748 blocks

Onvoy, LLC 5 · 22%
Wide Voice, LLC 3 · 13%
Ahoi LLC 1 · 4%

Assigned blocks held, of 23; 3 carriers in all.

Spam and robocall complaints about 748 numbers

30 numbers in 748 have 31 complaints with the FTC's Do Not Call registry since May 2022; 21 (68%) were about robocalls. The FCC has 26 unwanted-call complaints naming 18 748 numbers.

Top call types (FTC)

Dropped call or no message 6 · 19%
Reducing your debt (credit cards, mortgage, student loans) 3 · 10%
Calls pretending to be government, businesses, or family and friends 3 · 10%
Lotteries, prizes & sweepstakes 1 · 3%
Medical & prescriptions 1 · 3%
Home improvement & cleaning 1 · 3%

Complaints filed by consumers; neither agency verifies them. Share of all complaints; the rest named another type or none.

Most-reported numbers in 748

Recently reported 748 numbers

The numbers with the newest complaint or report, by the date of the call (FTC) or of the report.

Questions about area code 748

Where is area code 748?: Area code 748 is in Colorado. Its number blocks are assigned in 11 rate centres; the largest places include Durango, Eagle, Estes Park, Fraser, Gilcrest and Greeley.
What time zone is area code 748?: Area code 748 is in Mountain Time.
Is area code 748 an overlay?: Yes. 748 shares its area with 970, so local calls need all 10 digits. It was added to relieve 970.
When did area code 748 start?: Area code 748 went into service on Jul 7, 2025, according to NANPA.
Are calls from area code 748 spam?: 30 numbers in 748 have FTC Do Not Call complaints (31 in all), most often “Dropped call or no message”. Most numbers in an area code are ordinary lines, so look up the exact number that called you.
How do I check who called me from a 748 number?: Enter the full 10-digit number in the search box on this page, or go to canadial.com/lookup/748 followed by the 7 remaining digits.

Other area codes in Colorado

All US and Canadian area codes · Spam calls in Colorado · Is this number spoofed?

303 719 720 970 983