The 703 area code covers Washington, D.C. suburbs, Herndon and 8 more places in Virginia.
Area code 703 is in Virginia, on Eastern Time. In the 703 area, phone numbers are given out most in Fairfax County, then Prince William and Loudoun counties. It has been in service since 1947. 571 covers the same area, so two neighbours can have different area codes.
- Where
- 4 counties in Virginia, mostly Fairfax County, Prince William County and Loudoun County
- Time zone
- Eastern Time
- In service since
- 1947, one of the original area codes
- Shares its area with
- 571 (since 2000)
- Prefixes in use
- 775
- How to dial
- Local calls need all 10 digits: 703-555-0142.
Find out who called you from a 703 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (703) number is on today, use our free carrier lookup.
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Washington, D.C. suburbs holds 71% of the phone prefixes in area code 703.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 775 prefixes in use shows where 703 numbers are actually given out.
- Washington, D.C. suburbs549 prefixes, 71%
- Herndon65 prefixes, 8%
- Manassas26 prefixes, 3%
- Leesburg24 prefixes, 3%
- Occoquan16 prefixes, 2%
- Triangle13 prefixes, 2%
- Lorton10 prefixes, 1%
- Dulles9 prefixes, 1%
Also served: Haymarket and Nokesville.
Of the carriers named here, Level 3 (Lumen) holds the most phone number prefixes in area code 703: 53 of 775.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 775 prefixes in use in 703 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| Level 3 (Lumen)Lumen's business and wholesale network | 53 | 7% |
| AT&T MobilityMobile network | 42 | 5% |
| PAETEC (Windstream)Windstream's business phone network | 40 | 5% |
| T-MobileMobile network | 31 | 4% |
| Teleport (AT&T)AT&T's business phone network | 20 | 3% |
| Metro by T-MobileT-Mobile's prepaid brand | 12 | 2% |
| 15 other carriers | 577 | 74% |
48% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
703 has been split once and overlaid once since 1947.
1947
703 is one of the original North American area codes.
1995
On July 15, 1995, 540 splits off and takes part of the 703 area.
2000
On March 1, 2000, 571 is added on top of 703, so new numbers here can get either code.
A 703 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 703 are 202, 301 and 410.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
These are the questions people ask most about area code 703.
Where is area code 703?
703 covers Washington, D.C. suburbs, Herndon, Manassas and Leesburg and 6 more places in Virginia. In the 703 area, phone numbers are given out most in Fairfax County, then Prince William and Loudoun counties.
What state is area code 703 in?
Virginia. 703 is a Virginia area code on Eastern Time.
What cities use area code 703?
The places holding the most 703 prefixes are Washington, D.C. suburbs, Herndon, Manassas, Leesburg, Occoquan, Triangle, Lorton and Dulles, out of 10 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 703?
No single phone company owns 703. NANPA's records list its 775 prefixes across many carriers, and the ones named on this page include Level 3 (Lumen), AT&T Mobility and PAETEC (Windstream). Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 703 in?
703 is on Eastern Time.
When did area code 703 start?
703 is one of the original North American area codes, in service since 1947.
Is 703 the same area as 571?
Yes. 571 (since 2000) covers the same ground as 703. Nobody's number changed when it was added; new lines simply get whichever code has numbers left, so two neighbours can have different codes.
How do I dial a 703 number?
Local calls need all 10 digits: 703-555-0142.
Is 703 a toll-free number?
No. 703 is a regular area code for Washington, D.C. suburbs and Herndon in Virginia, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 703?
The closest are 202/771 (Washington, D.C.), 301/240/227 (Washington, D.C. suburbs, Maryland), 410/443/667 (Baltimore, Maryland) and 717/223 (Harrisburg, Pennsylvania), measured between the centres of each area.
Who called me from a 703 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 703 a scam?
703 is a real Virginia area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.