NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 585
EXIANT COMMUNICATIONS LLC 3
TC SYSTEMS, INC. - NY 1
NEW CINGULAR WIRELESS PCS, LLC - DC 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
2020-07-10 585-514-5XXX 5000–5999Assigned ONVOY, LLC- NY 384C ROCHESTER NY
2020-07-10 585-677-7XXX 7000–7999Assigned FRACTEL, LLC 965H CHAFFEE NY
2020-07-10 585-946-3XXX 3000–3999Assigned FRACTEL, LLC 965H AKRON NY
2020-06-03 585-539-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CUBA NY
2020-06-01 585-551-1XXX 1000–1999Assigned NUSO, LLC 478J ROCHESTER NY
2020-05-29 585-517-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C DALTON NY
2020-05-29 585-517-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C DALTON NY
2020-05-29 585-522-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C BELMONT NY
2020-05-29 585-522-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C BELMONT NY
2020-05-29 585-523-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C WATERPORT NY
2020-05-29 585-523-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C WATERPORT NY
2020-05-29 585-620-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C CHURCHVL NY
2020-05-29 585-620-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C CHURCHVL NY
2020-05-29 585-664-1XXX 1000–1999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E BATAVIA NY
2020-05-29 585-699-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C DANSVILLE NY
2020-05-29 585-699-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C DANSVILLE NY
2020-05-26 585-304-7XXX 7000–7999Assigned ONVOY, LLC- NY 384C OAKFIELD NY
2020-05-26 585-312-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C ELBA NY
2020-05-26 585-460-4XXX 4000–4999Assigned ONVOY, LLC- NY 384C CALEDONIA NY
2020-05-26 585-460-5XXX 5000–5999Assigned ONVOY, LLC- NY 384C CALEDONIA NY
2020-05-26 585-757-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C ELBA NY
2020-05-26 585-948-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C OAKFIELD NY
2020-05-13 585-566-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C BLISS NY
2020-05-13 585-566-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C BLISS NY
2020-05-13 585-580-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C ANGELICA NY
2020-05-13 585-580-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C ANGELICA NY
2020-05-13 585-601-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C HENRIETTA NY
2020-05-13 585-601-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C HENRIETTA NY
2020-05-12 585-443-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 GENESEO NY
2020-05-01 585-207-8XXX 8000–8999Assigned ONVOY, LLC- NY 384C FILLMORE NY
2020-05-01 585-207-9XXX 9000–9999Assigned ONVOY, LLC- NY 384C FILLMORE NY
2020-05-01 585-973-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C FRIENDSHIP NY
2020-04-29 585-215-4XXX 4000–4999Assigned ONVOY, LLC- NY 384C WYOMING NY
2020-04-29 585-215-5XXX 5000–5999Assigned ONVOY, LLC- NY 384C WYOMING NY
2020-04-29 585-407-4XXX 4000–4999Assigned ONVOY, LLC- NY 384C VICTOR NY
2020-04-29 585-407-9XXX 9000–9999Assigned ONVOY, LLC- NY 384C VICTOR NY
2020-04-29 585-446-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C W WEBSTER NY
2020-04-29 585-508-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C HOLCOMB NY
2020-04-29 585-508-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C HOLCOMB NY
2020-04-29 585-515-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C HILTON NY
2020-04-29 585-515-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C HILTON NY
2020-04-28 585-789-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C EROCHESTER NY
2020-04-24 585-282-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FAIRPORT NY
2020-04-14 585-496-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CHAFFEE NY
2020-04-09 585-213-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WAYLAND NY
2020-03-25 585-514-0XXX 0000–0999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E ROCHESTER NY
2020-03-23 585-470-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2020-03-23 585-504-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2020-03-19 585-508-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HOLCOMB NY
2020-03-19 585-515-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HILTON NY

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.