NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2021-06-22 915-284 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C VINTON TX
2021-06-21 218-604 0XXX1XXX8XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E BEMIDJI MN
2021-06-21 234-295 0XXX1XXX3XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C SEVILLE OH
2021-06-21 239-388 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H MARCO IS FL
2021-06-21 239-966 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SNCPVISNDS FL
2021-06-21 319-315 0–9 XXXall 10 · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H ANAMOSA IA
2021-06-21 319-370 0XXX1XXX2XXX3XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H COGGON IA
2021-06-21 319-387 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H CENTRAL CY IA
2021-06-21 320-775 5XXX7XXX9XXX which blocks → METROPCS, INC. 5562 BOCK MN
2021-06-21 343-628 not yet reported which blocks → NRTC Communications 940D Eganville —
2021-06-21 365-590 not yet reported which blocks → TekSavvy Solutions Inc 548H Campbellville —
2021-06-21 365-591 not yet reported which blocks → TekSavvy Solutions Inc 548H Freelton —
2021-06-21 365-592 not yet reported which blocks → TekSavvy Solutions Inc 548H Georgetown —
2021-06-21 365-593 not yet reported which blocks → TekSavvy Solutions Inc 548H Milton —
2021-06-21 365-594 not yet reported which blocks → TekSavvy Solutions Inc 548H Oakville —
2021-06-21 365-595 not yet reported which blocks → TekSavvy Solutions Inc 548H Burlington —
2021-06-21 386-899 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H POMONAPARK FL
2021-06-21 409-268 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPURGER TX
2021-06-21 440-726 0XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → ONVOY, LLC - OH 464C THOMPSON OH
2021-06-21 515-315 0XXX3XXX5XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H BLAIRSBURG IA
2021-06-21 515-550 0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - IA 221F BRADGATE IA
2021-06-21 515-551 0XXX1XXX5XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H CLARION IA
2021-06-21 563-477 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H CLINTON IA
2021-06-21 563-540 0XXX1XXX2XXX4XXX5XXX7XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H WAUKON IA
2021-06-21 563-550 0XXX1XXX5XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H CALMAR IA
2021-06-21 563-560 0XXX5XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H LANSING IA
2021-06-21 567-355 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C GALION OH
2021-06-21 612-463 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2021-06-21 651-386 0XXX1XXX2XXX3XXX6XXX7XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E WABASHA MN
2021-06-21 681-376 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELNYX LLC 073H MORGANTOWN WV
2021-06-21 689-236 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 LKBUNAVIST FL
2021-06-21 689-237 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 KISSIMMEE FL
2021-06-21 727-855 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CLEARWATER FL
2021-06-21 813-796 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPAEST FL
2021-06-21 863-282 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 WINTER HVN FL
2021-06-21 910-905 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAURINBURG NC
2021-06-21 937-812 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C XENIA OH
2021-06-21 945-202 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C NEVADA TX
2021-06-21 945-203 0XXX2XXX3XXX4XXX5XXX6XXX8XXX which blocks → ONVOY, LLC - TX 903C SCURRY TX
2021-06-21 985-342 0XXX1XXX2XXX3XXX6XXX7XXX9XXX · 4 holders which blocks → VOICESTREAM GSM I, LLC 150C LAROSE LA
2021-06-18 220-213 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F AMANDA OH
2021-06-18 272-288 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H CRESCO PA
2021-06-18 272-290 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H DANVILLE PA
2021-06-18 272-302 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H ELYSBURG PA
2021-06-18 272-373 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H FREELAND PA
2021-06-18 272-377 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H FRIEDENSBG PA
2021-06-18 365-589 not yet reported which blocks → TekSavvy Solutions Inc 548H Waterdown —
2021-06-18 413-408 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D EASTHAMPTN MA
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 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.