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
2020-03-13 585-634-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E RUSHVILLE NY
2020-03-02 585-664-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BATAVIA NY
2020-02-19 585-684-4XXX 4000–4999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E HOLLEY NY
2020-02-14 585-439-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HENRIETTA NY
2020-02-14 585-439-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HENRIETTA NY
2020-02-03 585-432-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C DANSVILLE NY
2020-02-03 585-432-9XXX 9000–9999Assigned ONVOY, LLC- NY 384C DANSVILLE NY
2020-01-28 585-480-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 MIDDLEPORT NY
2020-01-24 585-514-2XXX 2000–2999Assigned CSC WIRELESS, LLC 425J ROCHESTER NY
2020-01-22 585-282-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FAIRPORT NY
2020-01-21 585-440-4XXX 4000–4999Assigned ONVOY, LLC- NY 384C CHURCHVL NY
2020-01-21 585-440-5XXX 5000–5999Assigned ONVOY, LLC- NY 384C CHURCHVL NY
2020-01-21 585-440-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C CHURCHVL NY
2020-01-21 585-440-7XXX 7000–7999Assigned ONVOY, LLC- NY 384C CHURCHVL NY
2020-01-21 585-440-9XXX 9000–9999Assigned ONVOY, LLC- NY 384C CHURCHVL NY
2020-01-16 585-558-8XXX 8000–8999Assigned TELNYX LLC 073H WARSAW NY
2020-01-08 585-789-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 EROCHESTER NY
2019-12-20 585-565-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C ROCHESTER NY
2019-12-20 585-565-4XXX 4000–4999Assigned ONVOY, LLC- NY 384C ROCHESTER NY
2019-12-20 585-565-5XXX 5000–5999Assigned ONVOY, LLC- NY 384C ROCHESTER NY
2019-12-20 585-565-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C ROCHESTER NY
2019-12-18 585-366-5XXX 5000–5999Assigned ONVOY, LLC- NY 384C HILTON NY
2019-12-16 585-333-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2019-12-16 585-333-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2019-12-16 585-333-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2019-12-16 585-505-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2019-12-16 585-505-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2019-12-16 585-710-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2019-12-16 585-710-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2019-12-16 585-710-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2019-12-16 585-877-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C ROCHESTER NY
2019-12-02 585-439-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HENRIETTA NY
2019-11-12 585-361-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SHORTSVL NY
2019-10-18 585-407-8XXX 8000–8999Assigned EMPIRE LONG DISTANCE CORPORATION 087H VICTOR NY
2019-10-18 585-505-5XXX 5000–5999Assigned ONVOY, LLC- NY 384C ROCHESTER NY
2019-10-18 585-505-8XXX 8000–8999Assigned ONVOY, LLC- NY 384C ROCHESTER NY
2019-10-18 585-531-0XXX 0000–0999Assigned EMPIRE LONG DISTANCE CORPORATION 087H NAPLES NY
2019-10-18 585-577-8XXX 8000–8999Assigned EMPIRE LONG DISTANCE CORPORATION 087H CANANDAGUA NY
2019-10-10 585-682-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WATERPORT NY
2019-10-09 585-505-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2019-10-09 585-505-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2019-10-07 585-710-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H ROCHESTER NY
2019-09-06 585-664-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BATAVIA NY
2019-08-19 585-207-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C FILLMORE NY
2019-08-19 585-207-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C FILLMORE NY
2019-08-19 585-304-5XXX 5000–5999Assigned ONVOY, LLC- NY 384C OAKFIELD NY
2019-08-19 585-316-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C KENDALL NY
2019-08-19 585-437-9XXX 9000–9999Assigned ONVOY, LLC- NY 384C RUSHFORD NY
2019-08-19 585-648-5XXX 5000–5999Assigned ONVOY, LLC- NY 384C WELLSVILLE NY
2019-08-19 585-684-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C HOLLEY 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.