(303)-712-1837
Denver, CO · United States · Qwest Corporation
Complaints were filed by consumers with US regulators.
Number details
- Location
- Denver, CO · United States
- Carrier
- Qwest Corporation
- Line type
- Landline or business line
- Prefix status
- In Service
- Number pooling
- No · the whole prefix belongs to one carrier
- Operating company no.
- 9636
- Area code
- 303
- Prefix
- 303-712
- Also written as
- +1 303-712-1837 · +13037121837 · 303.712.1837
Carrier and line type come from the block this number was issued from. Numbers can be ported, so the current carrier may differ.
Complaints filed with regulators
- FCC complaints
- 1
- Robocall
- 1 of 1
- Most common subject
- Other Services
- First complaint
- 2026-10-05
- Latest complaint
- 2026-10-05
Source: FCC Consumer Complaints Data (unwanted calls), refreshed daily. Complaints are consumer statements and are not verified by the agencies or by us.
What people reported
No reports yet for this number. If it called you, be the first.
Other numbers in 303-712
No other number in this block has been reported here or complained about to the FCC.
Area code 303 · Colorado
- Prefixes in use
- 784
- Carriers
- 27
- Main cities
- Denver, Longmont, Fortlupton, Deckers
- This carrier
- Qwest Corporation holds 448 of 784 prefixes
- Qwest Corporation448 prefixes
- Cellco Partnership dba Verizon Wireless - Co60 prefixes
- Level 3 Communications, LLC - Co58 prefixes
- T-mobile Usa, Inc.39 prefixes
- New Cingular Wireless Pcs, LLC35 prefixes
About 303-712 numbers
Numbers starting 303-712 were assigned to Qwest Corporation for Denver, CO. Caller ID can be spoofed, so a local-looking number is not proof the call came from there.
How to check a phone number
A reverse phone lookup shows the number's original prefix assignment and any reports available here. It does not identify the person calling. Enter the full ten-digit number, including the area code, to see the records for that number rather than just its block.
- Check the city or exchange and carrier in the original assignment record. The line type is an estimate based on the carrier's name.
- Read any visitor reports and regulator complaints, including their dates and descriptions. Separate what someone reported from what the numbering record establishes.
- If the caller claims to represent a business or agency, find its contact number on a website, statement or card you already trust and contact it independently.
Sources behind the lookup
The lookup combines official prefix records with reports about individual numbers. Because these sources answer different questions, an assigned prefix and a consumer complaint should be read separately.
| Source | What it shows |
|---|---|
| CNAC / NANPA | The exchange, carrier and status of the original number block, rather than the identity of today's caller. |
| Visitor reports | Categories, comments and dates supplied by people who used this site. These statements are not verified. |
| Regulator complaints | Available FCC or FTC consumer complaint counts and dates. A complaint is an allegation, not a finding of fraud. |
Risks and limitations
Caller ID can be spoofed, so even a real local number may be displayed by someone else. Numbers can also be ported between carriers; the original assignment does not establish the current carrier or location. Toll-free codes are shared by Canada and the US and do not identify a city.
No reports means no reports are available here, not that a caller is safe. Do not send money, passwords or verification codes based on a lookup result. Read how caller ID spoofing works before deciding whether to call back.