NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

2 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 463
ONVOY, LLC - IN 1
NEW CINGULAR WIRELESS PCS, LLC - IL 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
2023-12-08 463-291 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D INDIANAPLS IN
2023-09-11 463-290 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GREENFIELD IN
2023-08-23 463-288 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D DANVILLE IN
2023-08-23 463-289 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D CUMBERLAND IN
2023-06-23 463-285 0XXX1XXX2XXX3XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - IN 097D SHERIDAN IN
2023-06-23 463-286 2XXX which blocks → ONVOY, LLC - IN 097D MARIETTA IN
2023-06-23 463-287 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D NOBLESVL IN
2023-04-07 463-403 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 FISHERS IN
2023-04-03 463-363 0–9 XXXwhole prefix which blocks → ONVOY, LLC - IN 097D ZIONSVILLE IN
2023-03-06 463-284 0XXX9XXX · 2 holders which blocks → AT&T - LOCAL 7421 CHARLOTSVL IN
2023-02-01 463-283 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 732J GREENWOOD IN
2023-01-24 463-282 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 INDIANAPLS IN
2023-01-10 463-281 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 FRANKLIN IN
2023-01-06 463-280 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2022-11-09 463-634 0–9 XXXwhole prefix which blocks → ONVOY, LLC - IN 097D INDIANAPLS IN
2022-10-11 463-279 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2022-09-15 463-388 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H CARMEL IN
2022-08-23 463-278 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F NOBLESVL IN
2022-08-03 463-277 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F GREENWOOD IN
2022-07-22 463-276 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F INDIANAPLS IN
2022-06-14 463-275 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J PLAINFIELD IN
2022-03-16 463-274 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J INDIANAPLS IN
2022-03-14 463-272 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 CICERO IN
2022-03-14 463-273 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CARMEL IN
2022-02-24 463-271 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 INDIANAPLS IN
2022-02-24 463-622 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WESTFIELD IN
2022-02-23 463-270 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FISHERS IN
2022-02-23 463-687 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ACTON IN
2022-02-23 463-837 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MOORESVL IN
2022-02-03 463-268 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F GREENFIELD IN
2022-02-03 463-269 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2022-01-20 463-267 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2022-01-19 463-265 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FRANKLIN IN
2022-01-13 463-362 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BARGERSVL IN
2022-01-07 463-337 0XXX1XXX2XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NEWPALSTIN IN
2022-01-06 463-676 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OAKLANDON IN
2021-12-21 463-626 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GREENWOOD IN
2021-12-16 463-261 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J INDIANAPLS IN
2021-12-03 463-264 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D FORTVILLE IN
2021-11-09 463-260 0XXX1XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FAIRLAND IN
2021-11-04 463-262 0XXX1XXX2XXX3XXX6XXX · 2 holders which blocks → ONVOY, LLC - IN 097D PITTSBORO IN
2021-10-27 463-258 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F DANVILLE IN
2021-10-27 463-259 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F CUMBERLAND IN
2021-10-04 463-673 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FISHERS IN
2021-09-14 463-256 0–9 XXXall 10 · 2 holders which blocks → IP HORIZON LLC 515J INDIANAPLS IN
2021-08-24 463-254 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CICERO IN
2021-08-24 463-328 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CARMEL IN
2021-07-28 463-253 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J INDIANAPLS IN
2021-06-18 463-266 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D GREENFIELD IN
2021-06-18 463-464 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H SHELBYVL IN

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.