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
2016-11-09 585-714-9XXX 9000–9999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E EASTAURORA NY
2016-11-09 585-981-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 OLEAN NY
2016-11-01 585-384-1XXX 1000–1999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E COHOCTON NY
2016-10-21 585-685-2XXX 2000–2999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E ROCHESTER NY
2016-10-21 585-685-7XXX 7000–7999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E ROCHESTER NY
2016-10-21 585-736-5XXX 5000–5999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E ROCHESTER NY
2016-10-12 585-685-3XXX 3000–3999Assigned METROPCS, INC. 5562 ROCHESTER NY
2016-10-12 585-685-4XXX 4000–4999Assigned METROPCS, INC. 5562 ROCHESTER NY
2016-10-12 585-685-5XXX 5000–5999Assigned METROPCS, INC. 5562 ROCHESTER NY
2016-10-11 585-736-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ROCHESTER NY
2016-10-10 585-537-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K ROCHESTER NY
2016-10-10 585-537-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K ROCHESTER NY
2016-09-30 585-488-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K SPENCERPT NY
2016-09-29 585-685-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J ROCHESTER NY
2016-09-28 585-682-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WATERPORT NY
2016-09-20 585-404-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HENRIETTA NY
2016-09-20 585-537-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2016-09-20 585-537-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2016-09-20 585-685-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2016-09-20 585-866-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 MIDDLEPORT NY
2016-09-19 585-304-0XXX 0000–0999Assigned ONVOY, LLC- NY 384C OAKFIELD NY
2016-09-19 585-316-0XXX 0000–0999Assigned ONVOY, LLC- NY 384C KENDALL NY
2016-08-15 585-404-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K HENRIETTA NY
2016-08-15 585-404-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HENRIETTA NY
2016-07-27 585-430-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FAIRPORT NY
2016-07-13 585-378-1XXX 1000–1999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E OLEAN NY
2016-06-23 585-280-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WEBSTER NY
2016-06-23 585-308-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E LE ROY NY
2016-06-23 585-449-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BELMONT NY
2016-06-23 585-632-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BERGEN NY
2016-06-22 585-524-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BATAVIA NY
2016-06-22 585-902-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ALDEN NY
2016-06-20 585-417-9XXX 9000–9999Assigned ONVOY, LLC- NY 384C ROCHESTER NY
2016-06-17 585-981-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 OLEAN NY
2016-06-16 585-653-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ARCADE NY
2016-06-15 585-629-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2016-06-15 585-629-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2016-06-15 585-629-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2016-06-06 585-673-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K EROCHESTER NY
2016-06-03 585-443-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 GENESEO NY
2016-05-25 585-312-0XXX 0000–0999Assigned ONVOY, LLC- NY 384C ELBA NY
2016-05-25 585-312-2XXX 2000–2999Assigned ONVOY, LLC- NY 384C ELBA NY
2016-05-24 585-332-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LYNDONVL NY
2016-05-23 585-577-1XXX 1000–1999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E CANANDAGUA NY
2016-05-12 585-430-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K FAIRPORT NY
2016-05-12 585-685-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K ROCHESTER NY
2016-05-12 585-685-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K ROCHESTER NY
2016-05-04 585-417-8XXX 8000–8999Assigned PEERLESS NETWORK OF NEW YORK, LLC - NY 155E ROCHESTER NY
2016-05-03 585-390-0XXX 0000–0999Assigned ONVOY, LLC- NY 384C BYRON NY
2016-05-03 585-390-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C BYRON 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.