Where is area code 771?
NANPA assigns 771 to District of Columbia. The source report does not provide city-level coverage for this record, so this page does not guess a particular city. Browse other codes in District of Columbia
Verified area-code information
771 Area Code
771 is an in-service United States area code assigned to District of Columbia. It identifies a numbering region, not a caller’s current location.
Official Numbering RegionVerified NANPA Assignment
District of ColumbiaArea Code 771
Country: United States•Time Zone: Eastern•Overlays: 202•In Service: 09-Nov-2021
- Numbering country
- United States
- Area-code type
- Geographic
- Numbering region
- District of Columbia
- Time-zone information
- Eastern
- In service since
- 09-Nov-2021
View the official area-code maps ↗. Maps show numbering areas, not a caller’s location.
Time zones associated with 771
NANPA lists Eastern for this numbering area. These are numbering-region time zones, not a caller’s current location.
Eastern time
An area code can span more than one time zone. Local daylight-saving rules may differ.
What area codes overlay 771?
The NANPA source lists 202 in the same overlay complex. An overlay can serve the same broad numbering area; individual numbers still do not prove where a person is.
How do you dial a 771 number?
Use the North American country calling code +1 followed by the three-digit area code and seven-digit local number. For example, write the pattern as +1 771 XXX XXXX. Local dialing rules and charges depend on your location and provider. Check a supported dialing format or check NANPA’s 10-digit dialing list.
Assigned prefixes in 771
NANPA’s US report listed 70 assigned prefixes on 2026-09-29. These are code assignments, not a count of active phone numbers or proof of a caller’s current carrier. Search any US area code and prefix.
Top rate-center labels by assigned prefixes
| Rate center | Assigned prefixes |
|---|---|
| WSHNGTNZN1 | 70 |
Top listed companies by assigned prefixes
| Assignment company | Assigned prefixes |
|---|---|
| ONVOY, LLC - DC | 12 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 10 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - DC | 10 |
| BANDWIDTH.COM CLEC, LLC - DC | 7 |
| NEW CINGULAR WIRELESS PCS, LLC - DC | 5 |
771 prefix lookup
70 assigned prefixes are listed for this area code. Search NANPA’s US central-office code assignments. The listed company and rate center describe an assignment; number portability means they cannot identify the current carrier, subscriber, or caller.
The area-code file loads when you search. The three-digit prefix stays in your browser.
Check a number with area code 771
Enter the full ten-digit number to see its structure and formatting. The check stays in your browser.
Check a 771 number
Enter a 10-digit +1 North American number. We check its structure and area-code record, not the caller’s identity or whether the line is active.
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Received an unfamiliar call?
The displayed number may be spoofed. Do not rely on an area code as proof of caller identity. If the caller claims to represent a business, end the call and contact that business using a number you found independently.
Common questions about 771
What time zone is area code 771 in?
771 is assigned to District of Columbia, and the NANPA record associates it with Eastern time. A phone number does not reveal its owner’s current time zone. The clock above uses a representative time zone for the numbering area.
Does 771 mean the caller is in District of Columbia?
No. An area code is an assignment, and a person can travel, move, use internet calling, or display a spoofed number.
Can this page identify who called?
No. OfficialAreaCode has no live subscriber directory or spam-report database.