NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

70 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 667
NEW CINGULAR WIRELESS PCS, LLC - DC 38
ONVOY, LLC - MD 18
BANDWIDTH.COM CLEC, LLC - MD 6
METROPCS, INC. 2
INTRADO COMMUNICATIONS, LLC 2
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
2022-01-06 667-317-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H PRINCEANNE MD
2022-01-06 667-317-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H PRINCEANNE MD
2022-01-06 667-329-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H PARKTON MD
2022-01-06 667-329-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H PARKTON MD
2022-01-06 667-476-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H GLENWOOD MD
2022-01-06 667-476-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H GLENWOOD MD
2022-01-06 667-647-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H NORTH EAST MD
2022-01-06 667-647-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H NORTH EAST MD
2022-01-05 667-766-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H STEVENSVL MD
2022-01-05 667-766-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H STEVENSVL MD
2022-01-04 667-397-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H SOLOMONS MD
2022-01-04 667-397-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H SOLOMONS MD
2022-01-04 667-576-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H JARRETTSVL MD
2022-01-04 667-576-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H JARRETTSVL MD
2022-01-04 667-778-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H SPARROWSPT MD
2022-01-04 667-778-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H SPARROWSPT MD
2021-12-30 667-962-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H NORTHBEACH MD
2021-12-30 667-962-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H NORTHBEACH MD
2021-12-29 667-354-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 BALTIMORE MD
2021-12-29 667-360-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H ODENTON MD
2021-12-29 667-360-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H ODENTON MD
2021-12-29 667-387-5XXX 5000–5999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G PERRYVILLE MD
2021-12-29 667-427-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H WEST RIVER MD
2021-12-29 667-427-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H WEST RIVER MD
2021-12-29 667-427-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WEST RIVER MD
2021-12-29 667-477-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H HAMPSTEAD MD
2021-12-29 667-477-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H HAMPSTEAD MD
2021-12-29 667-644-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SEVERNA PK MD
2021-12-29 667-644-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H SEVERNA PK MD
2021-12-29 667-842-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H WOODLAWN MD
2021-12-29 667-842-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H WOODLAWN MD
2021-12-28 667-268-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F DARLINGTON MD
2021-12-28 667-338-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F CROFTON MD
2021-12-28 667-338-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F CROFTON MD
2021-12-28 667-346-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H SALISBURY MD
2021-12-28 667-346-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H SALISBURY MD
2021-12-28 667-388-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H SEVERN MD
2021-12-28 667-388-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H SEVERN MD
2021-12-28 667-656-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H EDGEWOOD MD
2021-12-23 667-302-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CECILTON MD
2021-12-23 667-302-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CECILTON MD
2021-12-23 667-380-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H ANNAPOLIS MD
2021-12-23 667-380-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H ANNAPOLIS MD
2021-12-21 667-283-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H FORK MD
2021-12-21 667-283-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H FORK MD
2021-12-16 667-301-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H PRINCEFRCK MD
2021-12-16 667-301-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H PRINCEFRCK MD
2021-12-16 667-315-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H BEL AIR MD
2021-12-16 667-328-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H ESSEX MD
2021-12-16 667-359-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H COLUMBIA MD

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.