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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2008-09-03 585-694-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-09-03 585-694-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-08-04 585-297-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BATAVIA NY
2008-08-04 585-362-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-08-04 585-465-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-08-04 585-465-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-08-04 585-694-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-07-31 585-362-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J ROCHESTER NY
2008-07-22 585-348-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 EROCHESTER NY
2008-07-22 585-694-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2008-07-22 585-694-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2008-07-21 585-444-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 HENRIETTA NY
2008-07-17 585-351-5XXX 5000–5999Assigned FRONTIER TELEPHONE OF ROCHESTER, INC. 0121 ROCHESTER NY
2008-07-10 585-287-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J ROCHESTER NY
2008-07-10 585-287-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J ROCHESTER NY
2008-07-02 585-808-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WELLSVILLE NY
2008-07-01 585-287-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2008-07-01 585-287-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2008-07-01 585-287-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2008-06-30 585-203-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K EROCHESTER NY
2008-06-20 585-348-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 EROCHESTER NY
2008-06-20 585-617-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K SPENCERPT NY
2008-06-17 585-287-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2008-06-06 585-447-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 GENESEO NY
2008-06-04 585-331-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBION NY
2008-06-04 585-362-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-06-04 585-362-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-05-20 585-286-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2008-05-20 585-286-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2008-05-12 585-861-2XXX 2000–2999Assigned YMAX COMMUNICATIONS CORP. - NY 282E BATAVIA NY
2008-05-12 585-861-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - NY 282E BATAVIA NY
2008-05-12 585-861-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - NY 282E BATAVIA NY
2008-05-12 585-861-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - NY 282E BATAVIA NY
2008-05-12 585-919-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 CANANDAGUA NY
2008-05-12 585-969-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PERRY NY
2008-05-07 585-297-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BATAVIA NY
2008-05-07 585-362-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2008-05-07 585-805-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 EASTAURORA NY
2008-05-01 585-203-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 EROCHESTER NY
2008-05-01 585-412-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 CANANDAGUA NY
2008-04-24 585-643-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 EROCHESTER NY
2008-04-21 585-203-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 EROCHESTER NY
2008-04-21 585-444-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K HENRIETTA NY
2008-04-21 585-869-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K VICTOR NY
2008-04-17 585-457-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 JAVA NY
2008-04-17 585-596-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WELLSVILLE NY
2008-04-17 585-638-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 HOLLEY NY
2008-04-17 585-682-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WATERPORT NY
2008-04-17 585-765-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 LYNDONVL NY
2008-04-17 585-928-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 BOLIVAR 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.