NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 434
BRIGHTSPEED OF VIRGINIA, LLC 76
NEW CINGULAR WIRELESS PCS, LLC - DC 44
VERIZON VIRGINIA, INC. 42
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 32
ONVOY, LLC - VA 28
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
2019-03-07 434-686 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 BLACKSTONE VA
2019-03-07 434-837 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 KEYSVILLE VA
2018-10-29 434-204 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - VA 138E BROOKNEAL VA
2018-10-29 434-216 0–9 XXXwhole prefix which blocks → ONVOY, LLC - VA 138E VIRGILINA VA
2018-10-29 434-280 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - VA 138E BUCKINGHAM VA
2018-06-26 434-206 0–9 XXXall 10 · 6 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 CLARKSVL VA
2018-06-26 434-273 0–9 XXXall 10 · 2 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 SOBRUNSWIK VA
2018-06-26 434-302 0–9 XXXall 10 · 6 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 JARRATT VA
2018-06-26 434-313 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 LAWRENCEVL VA
2018-06-20 434-435 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H LYNCHBURG VA
2018-06-05 434-459 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D CHARLOTSVL VA
2018-06-05 434-499 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D LYNCHBURG VA
2018-04-06 434-595 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - VA 138E PAMPLIN VA
2017-09-26 434-337 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F BIG ISLAND VA
2017-09-25 434-365 0–9 XXXall 10 · 5 holders which blocks → SHENTEL COMMUNICATIONS, LLC. - VA 4979 CHARLOTSVL VA
2017-05-22 434-999 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H CHARLOTSVL VA
2017-05-19 434-867 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H LYNCHBURG VA
2017-03-21 434-478 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - VA 138E CLOVER VA
2017-03-08 434-425 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H DANVILLE VA
2017-03-03 434-777 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H CHASE CITY VA
2017-03-03 434-888 0XXX1XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → TELNYX LLC 073H CHRLTTCTHS VA
2017-02-28 434-771 0–9 XXXwhole prefix which blocks → ONVOY, LLC - VA 138E LYNCHBURG VA
2016-12-05 434-215 0–9 XXXall 10 · 7 holders which blocks → TELNYX LLC 073H LYNCHBURG VA
2016-12-05 434-484 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H CHARLOTSVL VA
2016-09-02 434-225 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - VA 138E DRAKESBRCH VA
2016-04-14 434-201 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WHITMELL VA
2016-02-16 434-772 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G CAPRON VA
2015-12-29 434-255 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G ARVONIA VA
2015-12-29 434-256 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G BOYDTON VA
2015-06-11 434-818 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G LYNCHBURG VA
2015-03-20 434-404 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J SO BOSTON VA
2014-09-16 434-208 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → UNITED STATES CELLULAR - VA 6283 KEYSVILLE VA
2014-09-15 434-694 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - VA 138E FARMVILLE VA
2014-09-08 434-886 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F STONYCREEK VA
2014-05-14 434-234 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G CHARLOTSVL VA
2014-05-09 434-290 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F APPOMATTOX VA
2013-10-25 434-254 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J BLACKSTONE VA
2013-03-08 434-439 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LYNCHBURG VA
2013-02-06 434-288 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F VICTORIA VA
2012-11-09 434-602 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - VA 7238 JARRATT VA
2012-09-26 434-328 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J CHARLOTSVL VA
2012-08-06 434-303 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F GLADYS VA
2012-06-19 434-333 0–9 XXXall 10 · 6 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 LYNCHBURG VA
2012-03-26 434-829 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F EMPORIA VA
2012-02-06 434-423 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J BACHESHALL VA
2012-01-04 434-421 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 DANVILLE VA
2011-09-28 434-329 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LYNCHBURG VA
2011-09-15 434-319 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LYNCHBURG VA
2011-08-23 434-448 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F CONCORD VA
2011-08-10 434-505 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DILLWYN VA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.