NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 304
T-MOBILE USA, INC. 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2021-10-11 304-600-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H LETART WV
2021-10-11 304-721-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CHRLSTNZN5 WV
2021-10-11 304-742-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CRAIGSVL WV
2021-10-11 304-756-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H CHRLSTNZN7 WV
2021-10-11 304-756-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CHRLSTNZN7 WV
2021-10-11 304-836-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H BRUSHTON WV
2021-10-11 304-908-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H HNTNGTNZN4 WV
2021-10-11 304-908-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H HNTNGTNZN4 WV
2021-10-11 304-945-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CHRLSTNZN5 WV
2021-10-11 304-963-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H HNTNGTNZN2 WV
2021-10-11 304-971-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H NEW HAVEN WV
2021-10-11 304-978-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CLAY WV
2021-09-17 304-903-0XXX 0000–0999Assigned COMMIO, LLC 939H GRAFTON WV
2021-09-13 304-830-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WHELNGZON1 WV
2021-08-12 304-490-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOST RIVER WV
2021-08-12 304-490-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOST RIVER WV
2021-07-09 304-853-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F BURNSVILLE WV
2021-07-06 304-336-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 WHELNGZON2 WV
2021-07-06 304-336-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 WHELNGZON2 WV
2021-06-28 304-440-6XXX 6000–6999Assigned ONVOY, LLC - WV 449F RAVENSWOOD WV
2021-06-28 304-454-6XXX 6000–6999Assigned ONVOY, LLC - WV 449F ROWLESBURG WV
2021-06-28 304-501-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 WAYNE WV
2021-06-28 304-501-8XXX 8000–8999Assigned ONVOY, LLC - WV 449F WAYNE WV
2021-06-28 304-510-2XXX 2000–2999Assigned ONVOY, LLC - WV 449F NEWMRTNSVL WV
2021-06-28 304-512-1XXX 1000–1999Assigned ONVOY, LLC - WV 449F RAVENSWOOD WV
2021-06-28 304-659-9XXX 9000–9999Assigned ONVOY, LLC - WV 449F PENNSBORO WV
2021-06-28 304-823-5XXX 5000–5999Assigned ONVOY, LLC - WV 449F BELINGTON WV
2021-06-28 304-829-5XXX 5000–5999Assigned ONVOY, LLC - WV 449F BETHANY WV
2021-06-28 304-850-3XXX 3000–3999Assigned ONVOY, LLC - WV 449F WILLIAMSTN WV
2021-06-28 304-850-7XXX 7000–7999Assigned ONVOY, LLC - WV 449F WILLIAMSTN WV
2021-06-28 304-937-9XXX 9000–9999Assigned ONVOY, LLC - WV 449F BUFFALO WV
2021-06-21 304-365-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H FAIRMONT WV
2021-05-28 304-936-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WV 080F WINFIELD WV
2021-05-26 304-398-9XXX 9000–9999Assigned PEERLESS NETWORK OF WEST VIRGINIA, LLC - WV 928H NEWMRTNSVL WV
2021-05-26 304-990-6XXX 6000–6999Assigned PEERLESS NETWORK OF WEST VIRGINIA, LLC - WV 928H WHELNGZON5 WV
2021-05-11 304-358-6XXX 6000–6999Assigned METROPCS, INC. 5562 FRANKLIN WV
2021-05-10 304-454-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H ROWLESBURG WV
2021-05-10 304-509-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H NEWBURG WV
2021-05-10 304-568-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H TUNNELTON WV
2021-05-10 304-701-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H SUTTON WV
2021-05-10 304-980-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H REEDSVILLE WV
2021-05-10 304-990-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H WHELNGZON5 WV
2021-05-06 304-358-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H FRANKLIN WV
2021-05-06 304-501-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H WAYNE WV
2021-05-06 304-512-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H RAVENSWOOD WV
2021-05-06 304-577-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H WALTON WV
2021-05-06 304-606-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H BELINGTON WV
2021-05-06 304-659-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H PENNSBORO WV
2021-05-06 304-714-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CHESTER WV
2021-05-06 304-717-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H RUPERT WV

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.