NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 703
VERIZON VIRGINIA, INC. 374
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 56
VERIZON SOUTH, INC. - VA (CONTEL) 53
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 53
LEVEL 3 COMMUNICATIONS, LLC - VA 48
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2024-05-31 703-804 0–9 XXXall 10 · 3 holders which blocks → IP HORIZON LLC 515J HERNDON VA
2024-04-01 703-381 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H LEESBURG VA
2024-03-11 703-540 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H WSNGTNZN08 VA
2023-11-20 703-410 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H MANASSAS VA
2023-10-09 703-512 0–9 XXXall 10 · 5 holders which blocks → CALLWORKS CORPORATION 475J WSNGTNZN08 VA
2023-07-05 703-301 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H WSNGTNZN08 VA
2023-05-22 703-202 0–9 XXXwhole prefix which blocks → ONVOY, LLC - VA 138E WSNGTNZN08 VA
2023-05-17 703-703 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H WSNGTNZN17 VA
2022-05-05 703-977 0–9 XXXwhole prefix which blocks → ONVOY, LLC - VA 138E WSNGTNZN08 VA
2018-11-08 703-936 0–9 XXXall 10 · 6 holders which blocks → VONAGE AMERICA LLC 197D LEESBURG VA
2017-02-13 703-423 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 DULLES VA
2016-09-08 703-420 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G MANASSAS VA
2014-06-20 703-457 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN08 VA
2014-02-05 703-559 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN17 VA
2014-01-17 703-479 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 MANASSAS VA
2012-08-29 703-844 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DULLES VA
2011-11-14 703-523 0–9 XXXwhole prefix which blocks → COMCAST IP PHONE, LLC 318J DALE CITY VA
2011-01-17 703-949 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 HERNDON VA
2007-12-06 703-939 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 HERNDON VA
2007-02-06 703-374 0–9 XXXwhole prefix which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN19 VA
2006-08-30 703-657 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 HERNDON VA
2006-07-19 703-232 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 OCCOQUAN VA
2006-07-19 703-859 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN08 VA
2006-06-05 703-870 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2006-05-02 703-888 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J WSNGTNZN08 VA
2006-04-07 703-763 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 DALE CITY VA
2006-04-05 703-910 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J OCCOQUAN VA
2006-03-23 703-595 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 OCCOQUAN VA
2005-10-19 703-985 0–9 XXXwhole prefix which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 TRIANGLE VA
2005-08-30 703-953 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2005-08-18 703-889 0–9 XXXall 10 · 6 holders which blocks → VERIZON VIRGINIA, INC. 9213 HERNDON VA
2005-08-15 703-483 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 HERNDON VA
2005-06-13 703-357 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J OCCOQUAN VA
2005-06-13 703-853 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J MANASSAS VA
2005-03-28 703-955 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 HERNDON VA
2005-02-28 703-398 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 DALE CITY VA
2005-02-11 703-957 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J ARCOLA VA
2005-01-07 703-956 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HERNDON VA
2004-09-07 703-300 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2004-08-17 703-571 0–9 XXXwhole prefix which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA
2004-08-16 703-466 0–9 XXXall 10 · 4 holders which blocks → VERIZON VIRGINIA, INC. 9213 HERNDON VA
2004-06-02 703-984 0–9 XXXall 10 · 3 holders which blocks → VERIZON VIRGINIA, INC. 9213 HERNDON VA
2004-06-01 703-296 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 OCCOQUAN VA
2004-06-01 703-776 0–9 XXXall 10 · 4 holders which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN17 VA
2004-04-30 703-982 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 LORTON VA
2003-06-26 703-554 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J LEESBURG VA
2002-11-18 703-297 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 LEESBURG VA
2002-08-29 703-895 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 MANASSAS VA
2002-02-22 703-468 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 HAYMARKET VA
2002-01-09 703-699 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 WSNGTNZN08 VA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.