983 area code
Where the 983 area code is, its overlay and how to dial a +1 983 number from anywhere.
The 983 area code is in Colorado, United States (Mountain (MT)). To call from abroad: +1 983 555-0123. It is an overlay, so all 10 digits are dialled.
The 983 area code is a geographic North American Numbering Plan (NANP) code covering Colorado. It has been in service since 27-May-2021 and sits in the Mountain (MT) time zone.
How to dial a 983 number
+1 983 555-01231 983 555-0123983 555-0123Other Colorado area codes
Frequently asked questions
Where is the 983 area code?
The 983 area code is in Colorado, United States (Mountain (MT)).
Is 983 an overlay area code?
Yes. 983 overlays the same region as 303, 720, so callers dial all 10 digits.
Do I have to dial 10 digits for 983?
Yes — dial the area code plus the seven-digit number.
How do I call a 983 number from another country?
Dial your exit code (or +), then 1, then 983, then the number: +1 983 555-0123.
Source: NANPA numbering plan. An area code covers a region, not a precise address — a 983 number does not pinpoint a street or ZIP code.
Number holders in area code 983
Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 59 prefixes are in use in 983, shared by 21 companies. The largest holders:
| Company | Prefixes | Share |
|---|---|---|
| Onvoy, LLC | 11 | 19% |
| Multiple Ocn Listing | 9 | 15% |
| Wide Voice, LLC | 7 | 12% |
| 5 | 8% | |
| New Cingular Wireless PCS, LLC | 4 | 7% |
| Shelcomm | 3 | 5% |
Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.
Complaints about 983 numbers
- Reports to the FTC, last 30 days
- 167
- Recorded messages or robocalls
- 75%
- Rank among area codes
- #347 of 670
- Most reported subjects
- Reducing your debt (credit cards, mortgage, student loans) (77)
- Other (54)
- Dropped call or no message (7)
Period Aug 26 – Sep 24, 2026. These are the numbers shown on the caller ID of the reported calls; many are spoofed and do not belong to the real caller.
Source: US Federal Trade Commission, Do Not Call reported calls data (daily files).
All US area codes United States +1 Map of area code 983 — cities & rate centres