NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

43 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 571
BANDWIDTH.COM CLEC, LLC - VA 11
ONVOY, LLC - VA 10
OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 7
NEW CINGULAR WIRELESS PCS, LLC - DC 6
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6
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
2022-05-17 571-513-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DALE CITY VA
2022-05-09 571-626-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 TRIANGLE VA
2022-05-09 571-626-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 TRIANGLE VA
2022-04-27 571-547-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN08 VA
2022-04-21 571-545-6XXX 6000–6999Assigned METROPCS, INC. 5562 WSNGTNZN17 VA
2022-04-18 571-866-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 OCCOQUAN VA
2022-04-15 571-556-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H BRADDOCK VA
2022-03-31 571-547-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN08 VA
2022-03-31 571-578-9XXX 9000–9999Assigned METROPCS, INC. 5562 LEESBURG VA
2022-03-28 571-548-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H HERNDON VA
2022-03-28 571-548-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H HERNDON VA
2022-03-28 571-746-1XXX 1000–1999Assigned METROPCS, INC. 5562 DULLES VA
2022-03-24 571-547-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H WSNGTNZN08 VA
2022-03-24 571-547-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H WSNGTNZN08 VA
2022-03-22 571-548-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 HERNDON VA
2022-03-22 571-548-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 HERNDON VA
2022-03-22 571-548-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 HERNDON VA
2022-03-21 571-543-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H DALE CITY VA
2022-03-04 571-626-2XXX 2000–2999Assigned TON80 COMMUNICATIONS, LLC 516J TRIANGLE VA
2022-03-02 571-591-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN19 VA
2022-03-02 571-591-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN19 VA
2022-03-02 571-591-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN19 VA
2022-03-02 571-591-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN19 VA
2022-02-25 571-727-2XXX 2000–2999Assigned TON80 COMMUNICATIONS, LLC 516J LORTON VA
2022-02-24 571-538-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H MANASSAS VA
2022-02-24 571-788-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J HAYMARKET VA
2022-02-23 571-545-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H WSNGTNZN17 VA
2022-02-23 571-545-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H WSNGTNZN17 VA
2022-02-23 571-591-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H WSNGTNZN19 VA
2022-02-23 571-591-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H WSNGTNZN19 VA
2022-02-18 571-688-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J INDENDNTHL VA
2022-02-18 571-742-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J DULLESMTRO VA
2022-02-18 571-746-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J DULLES VA
2022-02-18 571-832-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J BRADDOCK VA
2022-02-16 571-547-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2022-02-16 571-547-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2022-02-16 571-547-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2022-02-16 571-591-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2022-02-16 571-591-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2022-02-16 571-591-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN19 VA
2022-02-16 571-622-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - VA 8825 WSNGTNZN08 VA
2022-02-15 571-516-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 TRIANGLE VA
2022-02-06 571-538-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 MANASSAS VA
2022-02-06 571-545-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2022-02-06 571-545-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2022-02-06 571-545-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN17 VA
2022-02-05 571-773-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H DULLESMTRO VA
2022-02-04 571-877-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H LORTONMTRO VA
2022-02-04 571-877-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H LORTONMTRO VA
2022-01-31 571-543-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H DALE CITY VA

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.