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Area code 748

Area code 748 serves Colorado, including Durango, Eagle and Estes Park (Mountain time). It has been in service since July 7, 2025 and shares its area with 970.

Numbers starting with 748 drew 1 report to the FTC from Aug 14, 2026 to Nov 11, 2026 and 0 complaints to the FCC since November 2023. The number on your screen can be faked, so a 748 number proves nothing about where a call came from.

Location
Colorado
Time zone
Mountain
In service since
July 7, 2025Created from 970
Overlay
Same area as 970
Local calls
Dial 10 digitsArea code needed, even next door
Exchanges in use
10 of 792held by 3 carriers
Projected to run out
1Q 2101NANPA forecast 2026.2

Complaints about 748 numbers

Reports where the number on the consumer's caller ID (or, for the FCC, the number the caller asked them to call back) starts with 748. These are counts of what people reported; the agencies do not verify them.

FTC reports, Aug 14, 2026 to Nov 11, 2026

1

FCC complaints since November 2023

0

Different 748 numbers reported

1

What people said 748 calls were about

Subjects picked in FTC reports, August 14, 2026 to November 11, 2026. 1 of 1 reports were robocalls.

Show as a table
SubjectReports
Other1

Places served by 748

NANPA lists 10 rate centers for 748. A rate center is the town or district a block of numbers is tied to for billing; sorted here by how many exchanges each holds.
  • Durango1
  • Eagle1
  • Estes Park1
  • Fort Collins1
  • Fraser1
  • Gilcrest1
  • Grand Junction1
  • Greeley1
  • Ignacio1
  • Mead1

Phone companies holding 748 exchanges

Each exchange (the three digits after the area code) is assigned to one carrier. 100% of these exchanges are pooled: their numbers are handed out in blocks of 1,000 to other carriers, so the holder below is not always the company serving a given number.

Exchanges held, top 3 of 3 carriers

NANPA central office code assignments, file of November 11, 2026.

Show as a table
Carrier (legal name)Exchanges
Onvoy, LLC - CO5
Wide Voice, LLC - CO4
Ahoi LLC1

Check a 748 number

A check shows the carrier and rate center of the number's exchange and every FTC and FCC report about that exact number. Why the number on screen can be fake.

Other area codes in Colorado

NANPA area code database and central office code file of November 11, 2026; FCC complaints November 1, 2023 to November 11, 2026; FTC reports August 14, 2026 to November 11, 2026. How the data is used.

Official sources (7)Show