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
2019-10-10 463-710 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H INDIANAPLS IN
2019-08-15 463-225 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F WESTNEWTON IN
2019-07-05 463-223 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F CARMEL IN
2019-06-04 463-600 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H FAIRLAND IN
2019-05-08 463-867 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H INDIANAPLS IN
2019-03-14 463-400 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H OAKLANDON IN
2019-03-14 463-900 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H INDIANAPLS IN
2019-03-01 463-800 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J INDIANAPLS IN
2018-12-07 463-219 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D ACTON IN
2018-12-07 463-220 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D SHERIDAN IN
2018-11-06 463-216 0–9 XXXwhole prefix which blocks → VONAGE AMERICA LLC 197D CARMEL IN
2018-10-22 463-215 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FISHERS IN
2018-10-11 463-214 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D CICERO IN
2018-08-30 463-212 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2018-04-26 463-210 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NOBLESVL IN
2018-04-04 463-209 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D INDIANAPLS IN
2018-02-23 463-208 0–9 XXXwhole prefix which blocks → ONVOY, LLC - IN 097D BARGERSVL IN
2018-02-22 463-207 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H INDIANAPLS IN
2018-02-13 463-999 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D INDIANAPLS IN
2017-09-22 463-777 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D INDIANAPLS IN
2017-09-19 463-206 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2017-09-11 463-222 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D FRANKLIN IN
2017-09-11 463-333 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - IN 097D CARMEL IN
2017-09-11 463-444 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D GREENWOOD IN
2017-09-11 463-666 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - IN 097D MOORESVL IN
2017-09-11 463-888 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - IN 097D BROWNSBURG IN
2017-08-18 463-205 0–9 XXXwhole prefix which blocks → ONVOY, LLC - IN 097D INDIANAPLS IN
2017-06-22 463-204 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GREENWOOD IN
2017-05-09 463-200 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F WESTNEWTON IN
2017-03-10 463-221 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 INDIANAPLS IN
2017-03-10 463-224 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 INDIANAPLS IN
2017-01-18 463-202 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 INDIANAPLS IN
2016-11-10 463-701 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-11-08 463-201 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 INDIANAPLS IN
— 463-203 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF INDIANA, LLC - IN 279F INDIANAPLS IN
— 463-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IN
— 463-213 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF INDIANA, LLC - IN 279F INDIANAPLS IN
— 463-217 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF INDIANA, LLC - IN 279F GREENFIELD IN
— 463-231 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - IN 097D INDIANAPLS IN
— 463-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IN
— 463-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IN
— 463-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IN
— 463-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST IN
— 463-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IN
— 463-700 not yet reported which blocks → IN
— 463-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IN
— 463-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IN
— 463-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IN
— 463-950 not yet reported which blocks → IN
— 463-958 not yet reported which blocks → 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.