Area Code Lookup
What Area Code Is Dulles Metro?
2 area codes serve Dulles Metro · Virginia
Dulles Metro is served by area codes 571, 703. It is located in Virginia.
Area Codes Serving Dulles Metro
Frequently Asked Questions
What area code is Dulles Metro?
Dulles Metro is served by area codes 571, 703. It is located in Virginia.
Why does Dulles Metro have multiple area codes?
As demand for phone numbers increased, NANPA added area codes through splits (dividing the region) or overlays (layering a new code over the same geography). Dulles Metro now has 2 area codes — 571 and 703 — covering the same or overlapping areas.
How do I call Dulles Metro from outside the US?
To call Dulles Metro from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-571-XXX-XXXX). The +1 is the country code for all NANPA countries.