Area code
Area code 748 — Colorado
Colorado · in service since July 7, 2025
Area code 748 covers parts of Colorado. It is an overlay: 970 serves the same area, so neighbors can have different area codes.
Overlay, same area: 970
Local time in Colorado
Spam reports from Sep 23 – Oct 22, 2026
None in the FTC archive
Consumer reports, not verified by the FTC.
FCC count- Time zoneMountain Time
- Local calls10 digits
- Prefixes23 assigned
- Runs out~4Q 2088
- Unwanted call?Block & report
Spam call reports about 748 numbers
No FTC complaints about 748 numbers
Sep 11 – Oct 22, 2026
- FCC complaints, Oct 2025 – Sep 2026
- 0
Consumer reports, not verified by the FTC · source
Source: FTC Do Not Call complaints created Sep 11 – Oct 22, 2026. They are reported by consumers and are not verified by the FTC; caller ID can be spoofed (how we count).
Source: FCC Consumer Complaints data, unwanted calls filed Oct 1, 2025 – Sep 30, 2026, by caller ID; not verified by the FCC.
Area code 748 location and prefixes
| Exchange (NANPA) | Place | County | Prefixes |
|---|---|---|---|
| DURANGO | Durango | La Plata County | 1 |
| EAGLE | Eagle | Eagle County | 1 |
| ESTES PARK | Estes Park | Larimer County | 1 |
| FRASER | Fraser | Grand County | 1 |
| FT COLLINS | Fort Collins | Larimer County | 1 |
| GILCREST | Gilcrest | Weld County | 1 |
| GREELEY | Greeley | Weld County | 1 |
| IGNACIO | Ignacio | La Plata County | 1 |
| MEAD | Mead | Weld County | 1 |
Source: NANPA CO codes of Oct 23, 2026; places: U.S. Census Bureau, matched by DialWhere (how).
NANPA record
- Location
- Colorado
- Assigned by NANPA
- December 18, 2023
- Local dialing
- 10 digits (NANPA: 10D)
- NANPA planning letters
- PL-625
Source: NANPA, NPA database of Oct 24, 2026.
Is 748 running out of numbers?
Previous forecast (October 2025): 2082, moved later by 6 years.
Forecast exhaust year by edition
Source: NANPA NRUF forecast, April 2026 edition.
Who holds 748 prefixes
All four original holders
As listed by NANPA, not today’s carrier.
| Holder (as listed) | Prefixes | |
|---|---|---|
| Multiple Ocn Listing | 14 61% | |
| Onvoy, LLC | 5 22% | |
| Wide Voice, LLC | 3 13% | |
| Ahoi LLC | 1 4% |
Source: NANPA CO codes of Oct 23, 2026.
Questions about area code 748
What area code is 748?
A Colorado area code, in service since July 7, 2025.
Where is 748 area code, and what time zone is it in?
Colorado; Mountain Time.
Will 748 get a new area code?
NANPA forecasts exhaust in 4Q 2088; no relief planning listed.