| Prefixes | City | County | Line Type | Company |
|---|---|---|---|---|
| 571-201 | Reston | Fairfax | Cell Phone | Omnipoint Communications Ca... |
| 571-203 | Herndon | Fairfax | Landline | Verizon Virginia, Inc. |
| 571-205 | Fairfax | Fairfax | Cell Phone | Cellco Partnership Dba Veri... |
| 571-209 | Leesburg | Loudoun | Landline | Cavalier Telephone, Llc |
| 571-212 | Arlington | Arlington | Cell Phone | New Cingular Wireless Pcs,... |
| 571-213 | Springfield | Fairfax | Cell Phone | New Cingular Wireless Pcs,... |
| 571-214 | Alexandria | Fairfax | Cell Phone | New Cingular Wireless Pcs,... |
| 571-215 | Fairfax | Fairfax | Cell Phone | New Cingular Wireless Pcs,... |
| 571-216 | Fairfax | Fairfax | Cell Phone | New Cingular Wireless Pcs,... |
| 571-217 | Arlington | Arlington | Cell Phone | New Cingular Wireless Pcs,... |
| 571-218 | Arlington | Arlington | Landline | Verizon Virginia, Inc. |
| 571-220 | Alexandria | Alexandria City | Cell Phone | Nextel Communications, Inc. |
| 571-221 | Woodbridge | Prince William | Cell Phone | Nextel Communications, Inc. |
| 571-222 | Gainesville | Prince William | Landline | Broadwing Communications, L... |
| 571-223 | Ashburn | Loudoun | Landline | Verizon Virginia, Inc. |
| 571-224 | Arlington | Arlington | Landline | Verizon Virginia, Inc. |
| 571-225 | Herndon | Fairfax | Cell Phone | New Cingular Wireless Pcs,... |
| 571-226 | Falls Church | Fairfax | Landline | Verizon Virginia, Inc. |
| 571-227 | Arlington | Arlington | Landline | Teleport Communications Gro... |
| 571-228 | Arlington | Arlington | Cell Phone | New Cingular Wireless Pcs,... |
| 571-229 | Manassas | Prince William | Landline | Us Lec Of Virginia, Llc |
| 571-230 | Sterling | Loudoun | Cell Phone | New Cingular Wireless Pcs,... |
| 571-231 | Fairfax | Fairfax | Landline | Verizon Virginia, Inc. |
| 571-232 | Ashburn | Loudoun | Cell Phone | New Cingular Wireless Pcs,... |
| 571-233 | Manassas | Prince William | Cell Phone | Nextel Communications, Inc. |
| 571-234 | Vienna | Fairfax | Landline | Dslnet Communications Va, I... |
| 571-235 | Reston | Fairfax | Cell Phone | Sprint Spectrum L.p. |
| 571-236 | Springfield | Fairfax | Cell Phone | New Cingular Wireless Pcs,... |
| 571-237 | Woodbridge | Prince William | Cell Phone | Nextel Communications, Inc. |
| 571-238 | Woodbridge | Prince William | Cell Phone | Nextel Communications, Inc. |
| 571-239 | Herndon | Fairfax | Cell Phone | New Cingular Wireless Pcs,... |
| 571-241 | Woodbridge | Prince William | Cell Phone | Sprint Spectrum L.p. |
| 571-242 | Arlington | Arlington | Cell Phone | New Cingular Wireless Pcs,... |
| 571-243 | Fairfax | Fairfax | Cell Phone | New Cingular Wireless Pcs,... |
| 571-244 | Alexandria | Alexandria City | Cell Phone | Sprint Spectrum L.p. |
| 571-245 | Alexandria | Alexandria City | Cell Phone | Sprint Spectrum L.p. |
| 571-246 | Leesburg | Loudoun | Cell Phone | Nextel Communications, Inc. |
| 571-247 | Manassas | Prince William | Cell Phone | New Cingular Wireless Pcs,... |
| 571-248 | Gainesville | Prince William | Landline | Verizon South Inc.va (contel) |
| 571-251 | Alexandria | Alexandria City | Cell Phone | Sprint Spectrum L.p. |
| 571-252 | Ashburn | Loudoun | Landline | Verizon Virginia, Inc. |
| 571-257 | Alexandria | Alexandria City | Landline | Cox Virginia Telcom, Inc. Va |
| 571-258 | Leesburg | Loudoun | Landline | Verizon Virginia, Inc. |
| 571-259 | Alexandria | Fairfax | Cell Phone | Nextel Communications, Inc. |
| 571-261 | Gainesville | Prince William | Landline | Verizon South Inc.va (contel) |
| 571-262 | Herndon | Fairfax | Landline | Mcimetro Access Transmissio... |
| 571-263 | Sterling | Loudoun | Cell Phone | Sprint Spectrum L.p. |
| 571-264 | Woodbridge | Prince William | Cell Phone | Sprint Spectrum L.p. |
| 571-265 | Woodbridge | Prince William | Cell Phone | New Cingular Wireless Pcs,... |
| 571-268 | Sterling | Loudoun | Cell Phone | Sprint Spectrum L.p. |
| 571-271 | Fort Lauderdale | Broward | Landline | Coretel Virginia, Llc Va |
| 571-272 | Alexandria | Alexandria City | Landline | Verizon Virginia, Inc. |
| 571-274 | Alexandria | Fairfax | Cell Phone | Omnipoint Communications Ca... |
| 571-275 | Alexandria | Alexandria City | Cell Phone | Omnipoint Communications Ca... |
| 571-276 | Sterling | Loudoun | Cell Phone | Omnipoint Communications Ca... |
| 571-277 | Alexandria | Fairfax | Cell Phone | Omnipoint Communications Ca... |
| 571-278 | Annandale | Fairfax | Cell Phone | Omnipoint Communications Ca... |
| 571-280 | Lovettsville | Loudoun | Landline | Verizon Virginia, Inc. |
| 571-281 | Centreville | Fairfax | Landline | Level 3 Communications, Llc... |
| 571-282 | Falls Church | Fairfax | Landline | Broadview Networks, Inc. Va |
| 571-283 | Reston | Fairfax | Cell Phone | Nextel Communications, Inc. |
| 571-285 | Woodbridge | Prince William | Cell Phone | Sprint Spectrum L.p. |
| 571-287 | Chantilly | Fairfax | Cell Phone | Cellco Partnership Dba Veri... |
| 571-288 | Woodbridge | Prince William | Cell Phone | Sprint Spectrum L.p. |
| 571-289 | Fredericksburg | Stafford | Cell Phone | Cellco Partnership Dba Veri... |
| 571-291 | Ashburn | Loudoun | Landline | Level 3 Communications, Llc... |
| 571-292 | Manassas | Prince William | Landline | Cavalier Telephone, Llc |
| 571-294 | Vienna | Fairfax | Cell Phone | New Cingular Wireless Pcs,... |
| 571-296 | Manassas | Manassas City | Cell Phone | New Cingular Wireless Pcs,... |
| 571-297 | Falls Church | Fairfax | Landline | Level 3 Communications, Llc... |
| 571-299 | Herndon | Fairfax | Landline | Us Lec Of Virginia, Llc |
| 571-303 | Arlington | Arlington | Landline | Teleport Communications Gro... |
| 571-308 | Reston | Fairfax | Landline | Comcast Phone Of Virginia,... |
| 571-309 | Alexandria | Alexandria City | Cell Phone | New Cingular Wireless Pcs,... |
| 571-312 | Arlington | Arlington | Landline | Cox Virginia Telcom, Inc. Va |
| 571-313 | Reston | Fairfax | Landline | Comcast Phone Of Virginia,... |
| 571-315 | Arlington | Arlington | Cell Phone | Omnipoint Communications Ca... |
| 571-321 | Centreville | Fairfax | Landline | Cavalier Telephone, Llc |
| 571-322 | Springfield | Fairfax | Landline | Cavalier Telephone, Llc |
| 571-323 | Herndon | Fairfax | Landline | Cavalier Telephone, Llc |
| 571-329 | Lorton | Fairfax | Cell Phone | Cellco Partnership Dba Veri... |
| 571-330 | Woodbridge | Prince William | Cell Phone | Sprint Spectrum L.p. |
| 571-331 | Alexandria | Alexandria City | Cell Phone | Omnipoint Communications Ca... |
| 571-332 | Herndon | Fairfax | Cell Phone | Omnipoint Communications Ca... |
| 571-333 | Leesburg | Loudoun | Landline | Openband Of Virginia, Inc. |
| 571-334 | Alexandria | Alexandria City | Cell Phone | Cellco Partnership Dba Veri... |
| 571-336 | Herndon | Fairfax | Landline | Dslnet Communications Va, I... |
| 571-338 | Alexandria | Fairfax | Cell Phone | Omnipoint Communications Ca... |
| 571-339 | Fort Belvoir | Fairfax | Landline | Us Lec Of Virginia, Llc |
| 571-344 | Alexandria | Fairfax | Landline | Verizon Virginia, Inc. |
| 571-345 | Manassas | Prince William | Landline | Verizon Virginia, Inc. |
| 571-349 | Ashburn | Loudoun | Landline | Unknown |
| 571-366 | Alexandria | Alexandria City | Cell Phone | New Cingular Wireless Pcs,... |
| 571-374 | Buckhannon | Upshur | Landline | Ymax Communications Corp. Va |
| 571-379 | Manassas | Prince William | Landline | Comcast Phone Of Virginia,... |
| 571-382 | Mc Lean | Fairfax | Landline | Verizon Virginia, Inc. |
| 571-405 | Springfield | Fairfax | Cell Phone | Cellco Partnership Dba Veri... |
| 571-408 | Woodbridge | Prince William | Cell Phone | Cellco Partnership Dba Veri... |
| 571-410 | Miami | MiamiDade | Landline | Unknown |
| 571-423 | Falls Church | Fairfax | Landline | Verizon Virginia, Inc. |
| 571-426 | Ashburn | Loudoun | Cell Phone | Omnipoint Communications Ca... |
| 571-431 | Alexandria | Alexandria City | Landline | Verizon Virginia, Inc. |
| 571-432 | Fairfax | Fairfax | Landline | Verizon Virginia, Inc. |
| 571-434 | Sterling | Loudoun | Landline | Verizon Virginia, Inc. |
| 571-435 | Culver City | Los Angeles | Landline | Verizon Virginia, Inc. |
| 571-436 | Manassas | Prince William | Cell Phone | Nextel Communications, Inc. |
| 571-437 | Woodbridge | Prince William | Cell Phone | Nextel Communications, Inc. |
| 571-438 | Springfield | Fairfax | Landline | Atx Telecommunications Serv... |
| 571-439 | Woodbridge | Prince William | Cell Phone | Cellco Partnership Dba Veri... |
| 571-451 | Arlington | Arlington | Landline | Ctc Communications Corp. Va |
| 571-480 | Arlington | Arlington | Cell Phone | New Cingular Wireless Pcs,... |
| 571-481 | Alexandria | Fairfax | Cell Phone | New Cingular Wireless Pcs,... |
| 571-482 | Arlington | Arlington | Cell Phone | New Cingular Wireless Pcs,... |
| 571-483 | Alexandria | Alexandria City | Landline | Verizon Virginia, Inc. |
| 571-484 | Sterling | Loudoun | Cell Phone | Omnipoint Communications Ca... |
| 571-490 | Reston | Fairfax | Landline | Verizon Virginia, Inc. |
| 571-514 | Herndon | Fairfax | Landline | Cavalier East Llc Md |
| 571-521 | Sterling | Loudoun | Landline | Cavalier Telephone, Llc |
| 571-522 | Centreville | Fairfax | Landline | Verizon Virginia, Inc. |
| 571-527 | Alexandria | Alexandria City | Landline | Comcast Phone Of Virginia,... |
| 571-529 | Fairfax | Fairfax | Cell Phone | Cellco Partnership Dba Veri... |
| 571-594 | Ashburn | Loudoun | Landline | Verizon Virginia, Inc. |
| 571-619 | Miami | MiamiDade | Landline | Unknown |
| 571-625 | Springfield | Fairfax | Landline | Unknown |
| 571-633 | Mc Lean | Fairfax | Landline | Verizon Virginia, Inc. |
| 571-641 | Falls Church | Falls Church City | Landline | Starpower Communications, L... |
| 571-642 | Lorton | Fairfax | Landline | Verizon Virginia, Inc. |
| 571-643 | Herndon | Fairfax | Landline | Verizon Virginia, Inc. |
| 571-702 | Schenectady | Schenectady | Landline | Unknown |
| 571-721 | Alexandria | Alexandria City | Cell Phone | New Cingular Wireless Pcs,... |
| 571-722 | Annandale | Fairfax | Cell Phone | Nextel Communications, Inc. |
| 571-723 | Arlington | Arlington | Landline | Level 3 Communications, Llc... |
| 571-730 | Fairfax | Fairfax | Cell Phone | Cellco Partnership Dba Veri... |
| 571-748 | Reston | Fairfax | Landline | Cavalier East Llc Va |
| 571-749 | Fairfax | Fairfax | Landline | Cavalier East Llc Va |
| 571-761 | Jefferson City | Cole | Landline | Unknown |
| 571-766 | Vienna | Fairfax | Landline | Teleport Communications Gro... |
| 571-773 | Medford | Jackson | Landline | Unknown |
| 571-830 | Falls Church | Fairfax | Landline | Cox Virginia Telcom, Inc. Va |
| 571-839 | Reston | Fairfax | Cell Phone | Sprint Spectrum L.p. |
| 571-918 | Ashburn | Loudoun | Landline | Comcast Phone Of Virginia,... |
| 571-921 | Manassas | Manassas City | Landline | Verizon South Inc.va (contel) |
| 571-926 | Sterling | Loudoun | Cell Phone | Cellco Partnership Dba Veri... |
| 571-931 | Dumfries | Prince William | Landline | Cavalier East Llc Va |
| 571-932 | Arlington | Arlington | Landline | Cavalier East Llc Va |
| 571-934 | Sterling | Loudoun | Landline | Cavalier East Llc Va |
| 571-970 | Alexandria | Alexandria City | Landline | Comcast Phone Of Virginia,... |
| 571-991 | Washington | District Of Columbia | Cell Phone | Sprint Spectrum L.p. |