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
2010-01-28 585-210-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2010-01-28 585-210-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2010-01-28 585-348-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E EROCHESTER NY
2010-01-28 585-433-2XXX 2000–2999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E VICTOR NY
2010-01-28 585-496-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CHAFFEE NY
2010-01-28 585-502-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E LE ROY NY
2010-01-28 585-542-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E AKRON NY
2010-01-28 585-687-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E EASTAURORA NY
2010-01-28 585-708-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ATTICA NY
2010-01-28 585-861-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BATAVIA NY
2010-01-28 585-919-2XXX 2000–2999Assigned FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E CANANDAGUA NY
2010-01-28 585-969-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E PERRY NY
2010-01-22 585-572-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J LIVONIA NY
2010-01-21 585-365-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J BELFAST NY
2010-01-21 585-466-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J ANGELICA NY
2010-01-21 585-928-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J BOLIVAR NY
2010-01-08 585-545-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WEBSTER NY
2010-01-08 585-689-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BLISS NY
2010-01-08 585-808-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WELLSVILLE NY
2010-01-08 585-851-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2010-01-08 585-851-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2010-01-08 585-851-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2010-01-08 585-851-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2010-01-08 585-953-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2010-01-08 585-953-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2009-12-22 585-219-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J BATAVIA NY
2009-12-16 585-219-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BATAVIA NY
2009-12-10 585-351-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2009-12-09 585-568-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J ROCHESTER NY
2009-12-04 585-953-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2009-12-04 585-953-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2009-11-20 585-447-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 GENESEO NY
2009-11-18 585-351-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2009-11-17 585-360-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J ROCHESTER NY
2009-10-22 585-360-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ROCHESTER NY
2009-10-19 585-282-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 FAIRPORT NY
2009-10-19 585-282-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 FAIRPORT NY
2009-10-19 585-282-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 FAIRPORT NY
2009-10-19 585-282-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 FAIRPORT NY
2009-10-19 585-282-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 FAIRPORT NY
2009-10-19 585-282-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 FAIRPORT NY
2009-10-13 585-201-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BATAVIA NY
2009-10-13 585-348-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 EROCHESTER NY
2009-10-13 585-348-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 EROCHESTER NY
2009-10-13 585-348-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 EROCHESTER NY
2009-10-13 585-348-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 EROCHESTER NY
2009-10-05 585-205-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 MIDDLEPORT NY
2009-10-05 585-861-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BATAVIA NY
2009-10-01 585-456-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 ROCHESTER NY
2009-10-01 585-456-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 ROCHESTER 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.