748 area code
Where the 748 area code is, its overlay and how to dial a +1 748 number from anywhere.
The 748 area code is in Colorado, United States (Mountain (MT)). To call from abroad: +1 748 555-0123. It is an overlay, so all 10 digits are dialled.
The 748 area code is a geographic North American Numbering Plan (NANP) code covering Colorado. It has been in service since 18-Dec-2023 and sits in the Mountain (MT) time zone.
How to dial a 748 number
+1 748 555-01231 748 555-0123748 555-0123Other Colorado area codes
Frequently asked questions
Where is the 748 area code?
The 748 area code is in Colorado, United States (Mountain (MT)).
Is 748 an overlay area code?
Yes. 748 overlays the same region as 970, so callers dial all 10 digits.
Do I have to dial 10 digits for 748?
Yes — dial the area code plus the seven-digit number.
How do I call a 748 number from another country?
Dial your exit code (or +), then 1, then 748, then the number: +1 748 555-0123.
Source: NANPA numbering plan. An area code covers a region, not a precise address — a 748 number does not pinpoint a street or ZIP code.
Number holders in area code 748
Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 14 prefixes are in use in 748, shared by 1 companies. The largest holders:
| Company | Prefixes | Share |
|---|---|---|
| Multiple Ocn Listing | 14 | 100% |
Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.
All US area codes United States +1 Map of area code 748 — cities & rate centres