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
2021-06-18 463-466 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H WESTNEWTON IN
2021-06-11 463-252 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D ZIONSVILLE IN
2021-06-11 463-257 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D SHERIDAN IN
2021-05-20 463-348 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H BROWNSBURG IN
2021-05-20 463-356 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CLAYTON IN
2021-05-20 463-766 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FRACTEL, LLC 965H SHELBYVL IN
2021-05-17 463-355 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H FAIRLAND IN
2021-05-14 463-263 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - IN 097D ACTON IN
2021-05-13 463-422 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 CICERO IN
2021-04-29 463-583 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BROWNSBURG IN
2021-04-21 463-426 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J INDIANAPLS IN
2021-03-25 463-895 0–9 XXXall 10 · 4 holders which blocks → TWILIO INTERNATIONAL, INC. 506J INDIANAPLS IN
2021-02-04 463-317 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H INDIANAPLS IN
2021-02-03 463-250 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H CARMEL IN
2021-02-03 463-251 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELNYX LLC 073H FISHERS IN
2021-02-01 463-249 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 INDIANAPLS IN
2021-01-06 463-248 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NOBLESVL IN
2020-12-16 463-255 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D PLAINFIELD IN
2020-11-25 463-246 0–9 XXXall 10 · 2 holders which blocks → STRATUS NETWORKS 495J INDIANAPLS IN
2020-11-04 463-245 0–9 XXXall 10 · 3 holders which blocks → AIRESPRING, INC. 996H INDIANAPLS IN
2020-10-14 463-243 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D WESTFIELD IN
2020-10-14 463-244 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D BARGERSVL IN
2020-10-08 463-247 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H MARIETTA IN
2020-10-07 463-724 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H FRANKLIN IN
2020-10-07 463-732 0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 6 holders which blocks → FRACTEL, LLC 965H CHARLOTSVL IN
2020-10-07 463-946 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H WHITESTOWN IN
2020-09-18 463-242 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F CUMBERLAND IN
2020-09-08 463-529 1XXX2XXX3XXX4XXX7XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H TRAFALGAR IN
2020-09-08 463-842 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H WHITELAND IN
2020-08-28 463-336 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H INDIANAPLS IN
2020-08-25 463-345 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CARMEL IN
2020-08-25 463-500 0XXX1XXX2XXX3XXX5XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H NINEVEH IN
2020-08-19 463-241 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F GREENFIELD IN
2020-08-13 463-240 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 OAKLANDON IN
2020-08-12 463-238 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 NOBLESVL IN
2020-08-12 463-239 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J INDIANAPLS IN
2020-08-04 463-237 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 478J INDIANAPLS IN
2020-07-24 463-236 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 PLAINFIELD IN
2020-07-17 463-235 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHELBYVL IN
2020-07-01 463-234 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 FISHERS IN
2020-06-16 463-233 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F DANVILLE IN
2020-04-01 463-232 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 FORTVILLE IN
2020-03-05 463-300 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H GREENWOOD IN
2020-03-05 463-465 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H NEWPALSTIN IN
2020-01-30 463-230 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F INDIANAPLS IN
2020-01-29 463-229 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F ZIONSVILLE IN
2020-01-24 463-228 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 FISHERS IN
2020-01-14 463-226 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D CLAYTON IN
2020-01-14 463-227 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D PITTSBORO IN
2019-11-27 463-218 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 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.