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
2010-05-25 585-454-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2010-05-25 585-770-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2010-05-14 585-250-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K BATAVIA NY
2010-05-14 585-270-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K ROCHESTER NY
2010-05-07 585-713-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-05-07 585-713-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-05-07 585-939-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-05-07 585-939-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-05-07 585-939-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-05-05 585-512-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J ROCHESTER NY
2010-05-05 585-953-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2010-05-05 585-953-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2010-04-20 585-447-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J GENESEO NY
2010-04-20 585-713-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-04-20 585-713-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-04-20 585-713-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-04-20 585-713-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-04-20 585-713-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-04-20 585-713-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-04-19 585-500-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2010-04-19 585-500-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2010-04-19 585-500-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2010-04-19 585-500-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2010-04-15 585-713-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J ROCHESTER NY
2010-04-08 585-571-5XXX 5000–5999Assigned FRONTIER TELEPHONE OF ROCHESTER, INC. 0121 SCOTTSVL NY
2010-04-05 585-775-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2010-03-11 585-236-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WEBSTER NY
2010-03-08 585-773-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2010-03-08 585-773-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2010-03-03 585-479-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J BATAVIA NY
2010-03-03 585-713-9XXX 9000–9999Assigned METROPCS, INC. 5562 ROCHESTER NY
2010-02-26 585-773-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-02-26 585-773-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-02-26 585-851-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-02-26 585-851-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-02-22 585-348-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E EROCHESTER NY
2010-02-19 585-568-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2010-02-19 585-678-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E FAIRPORT NY
2010-02-16 585-743-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-02-16 585-743-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-02-16 585-743-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2010-02-05 585-201-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BATAVIA NY
2010-02-05 585-283-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBION NY
2010-02-05 585-447-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 GENESEO NY
2010-02-05 585-953-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2010-02-01 585-653-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ARCADE NY
2010-02-01 585-902-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ALDEN NY
2010-01-28 585-204-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E DANSVILLE NY
2010-01-28 585-205-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MIDDLEPORT NY
2010-01-28 585-209-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CUBA 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.