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
2008-04-16 585-902-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ALDEN NY
2008-04-15 585-203-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 EROCHESTER NY
2008-04-03 585-474-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-04-03 585-474-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-04-03 585-474-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-04-03 585-474-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-04-03 585-645-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WEBSTER NY
2008-04-03 585-689-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BLISS NY
2008-03-24 585-465-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2008-03-24 585-465-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2008-03-24 585-465-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2008-03-18 585-286-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K ROCHESTER NY
2008-03-17 585-643-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 EROCHESTER NY
2008-03-10 585-203-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 EROCHESTER NY
2008-03-05 585-205-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 MIDDLEPORT NY
2008-03-05 585-331-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBION NY
2008-03-05 585-683-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-03-05 585-683-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-02-29 585-362-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J ROCHESTER NY
2008-02-27 585-593-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WELLSVILLE NY
2008-02-21 585-286-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2008-02-07 585-302-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J PERRY NY
2008-02-05 585-297-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BATAVIA NY
2008-02-05 585-331-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBION NY
2008-02-05 585-519-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 GENESEO NY
2008-02-05 585-683-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-02-05 585-683-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-02-05 585-683-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-02-05 585-683-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-02-05 585-683-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-02-05 585-683-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-02-05 585-683-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-02-04 585-286-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ROCHESTER NY
2008-02-04 585-286-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ROCHESTER NY
2008-01-31 585-209-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 CUBA NY
2008-01-31 585-209-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 CUBA NY
2008-01-31 585-444-2XXX 2000–2999Assigned FRONTIER TELEPHONE OF ROCHESTER, INC. 0121 HENRIETTA NY
2008-01-24 585-294-8XXX 8000–8999Assigned FRONTIER TELEPHONE OF ROCHESTER, INC. 0121 CALEDONIA NY
2008-01-24 585-412-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K CANANDAGUA NY
2008-01-21 585-286-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ROCHESTER NY
2008-01-17 585-286-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ROCHESTER NY
2008-01-17 585-286-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ROCHESTER NY
2007-12-28 585-297-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BATAVIA NY
2007-12-28 585-474-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2007-12-20 585-398-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 VICTOR NY
2007-12-17 585-360-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2007-11-29 585-283-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J ALBION NY
2007-11-29 585-362-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2007-11-29 585-362-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2007-11-29 585-519-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 GENESEO 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.