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
2012-06-07 585-441-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2012-06-07 585-494-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BERGEN NY
2012-06-07 585-636-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HAMLIN NY
2012-05-18 585-441-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2012-05-18 585-441-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2012-05-18 585-441-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2012-05-18 585-626-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WEBSTER NY
2012-05-14 585-353-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2012-05-14 585-360-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2012-05-14 585-369-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2012-05-14 585-369-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2012-05-07 585-209-5XXX 5000–5999Assigned ONVOY, LLC- NY 384C CUBA NY
2012-05-07 585-332-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C LYNDONVL NY
2012-05-07 585-378-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C OLEAN NY
2012-05-07 585-447-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 GENESEO NY
2012-05-07 585-496-9XXX 9000–9999Assigned ONVOY, LLC- NY 384C CHAFFEE NY
2012-05-07 585-735-0XXX 0000–0999Assigned ONVOY, LLC- NY 384C MIDDLEPORT NY
2012-05-03 585-653-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C ARCADE NY
2012-05-03 585-937-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C ALDEN NY
2012-04-30 585-206-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C HOLLEY NY
2012-04-30 585-268-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C BELMONT NY
2012-04-30 585-296-4XXX 4000–4999Assigned ONVOY, LLC- NY 384C WELLSVILLE NY
2012-04-30 585-416-3XXX 3000–3999Assigned ONVOY, LLC- NY 384C WATERPORT NY
2012-04-30 585-708-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C ATTICA NY
2012-04-30 585-928-0XXX 0000–0999Assigned ONVOY, LLC- NY 384C BOLIVAR NY
2012-04-27 585-283-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ALBION NY
2012-04-25 585-948-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E OAKFIELD NY
2012-04-04 585-340-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2012-04-02 585-441-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 ROCHESTER NY
2012-03-09 585-476-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E DALTON NY
2012-03-09 585-883-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MT MORRIS NY
2012-03-05 585-612-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E DANSVILLE NY
2012-02-27 585-369-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2012-02-27 585-369-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2012-02-27 585-369-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2012-02-27 585-369-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2012-02-27 585-371-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2012-02-27 585-371-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2012-02-27 585-512-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2012-02-27 585-512-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2012-02-27 585-512-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2012-02-24 585-203-5XXX 5000–5999Assigned METROPCS, INC. 5562 EROCHESTER NY
2012-02-23 585-403-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 OLEAN NY
2012-02-21 585-371-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 ROCHESTER NY
2012-02-16 585-250-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BATAVIA NY
2012-01-31 585-369-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2012-01-23 585-204-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E DANSVILLE NY
2012-01-11 585-531-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NAPLES NY
2012-01-10 585-676-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E FRANKLINVL NY
2012-01-04 585-226-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E AVON 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.