NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

3 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, last 30 days — NPA 478
ONVOY, LLC - GA 2
8X8, INC. 1
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
2021-01-15 478-346 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E WRIGHTSVL GA
2021-01-15 478-910 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - GA 067D MACON GA
2020-12-29 478-341 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E EASTMAN GA
2020-12-23 478-466 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - GA 067D MILLEN GA
2020-12-21 478-307 0XXX1XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → STRATUS NETWORKS 495J SWAINSBORO GA
2020-12-21 478-332 0–9 XXXall 10 · 5 holders which blocks → STRATUS NETWORKS 495J MACON GA
2020-12-02 478-310 0–9 XXXall 10 · 3 holders which blocks → IP HORIZON LLC 515J MACON GA
2020-08-31 478-270 0–9 XXXall 10 · 2 holders which blocks → NUSO, LLC 478J MACON GA
2020-07-21 478-303 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J MACON GA
2020-05-13 478-312 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E WADLEY GA
2019-12-24 478-309 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H MACON GA
2019-10-11 478-887 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - GA 067D JEFFERSNVL GA
2019-10-07 478-877 0–9 XXXall 10 · 2 holders which blocks → TERRA NOVA TELECOM INC. 145J MACON GA
2019-09-12 478-300 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H COCHRAN GA
2019-09-12 478-356 7XXX9XXX which blocks → FRACTEL, LLC 965H CEDARGROVE GA
2019-09-12 478-500 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H EASTMAN GA
2019-09-12 478-600 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H MACON GA
2019-03-25 478-337 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E MACON GA
2019-03-12 478-900 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J LOUISVILLE GA
2019-02-05 478-210 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D MONTROSE GA
2019-02-05 478-395 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D TOOMSBORO GA
2018-06-12 478-245 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D MACON GA
2018-04-09 478-677 0XXX6XXX7XXX9XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K DUDLEY GA
2018-03-16 478-241 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E LOUISVILLE GA
2018-02-05 478-209 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → PINELAND COMMUNICATIONS, INC. - GA 458G SANDERSVL GA
2017-11-22 478-666 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D CENTERVL GA
2017-03-01 478-242 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E WADLEY GA
2017-02-09 478-800 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D DUBLIN GA
2017-02-02 478-249 0–9 XXXall 10 · 4 holders which blocks → PINELAND COMMUNICATIONS, INC. - GA 458G MILLEN GA
2016-12-20 478-259 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J MACON GA
2016-04-12 478-205 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 DUBLIN GA
2016-03-31 478-551 0–9 XXXall 10 · 4 holders which blocks → COMSOUTH TELENET, INC. - GA 9161 WARNERRBNS GA
2016-03-16 478-200 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E MACON GA
2016-03-16 478-347 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D WRIGHTSVL GA
2016-01-05 478-707 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D SANDERSVL GA
2015-09-21 478-215 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J SARDIS GA
2015-03-03 478-888 0–9 XXXwhole prefix which blocks → ONVOY, LLC - GA 067D SANDERSVL GA
2014-12-12 478-449 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D WARNERRBNS GA
2014-05-27 478-441 1XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CADWELL GA
2014-04-21 478-208 0XXX2XXX4XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HAWKINSVL GA
2013-10-11 478-253 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C LOUISVILLE GA
2013-01-09 478-292 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D MACON GA
2012-11-02 478-336 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G MACON GA
2012-08-29 478-583 0–9 XXXall 10 · 3 holders which blocks → PUBLIC SERVICE WIRELESS SERVICES, INC. 901G MACON GA
2012-05-22 478-352 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WARNERRBNS GA
2012-02-27 478-444 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J MACON GA
2011-11-14 478-294 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 MARSHALLVL GA
2011-09-14 478-353 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 DUBLIN GA
2011-07-07 478-313 0–9 XXXall 10 · 6 holders which blocks → WINDSTREAM GEORGIA COMMUNICATIONS CORP. 4332 PERRY GA
2011-07-05 478-302 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 WARNERRBNS GA

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.