NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

5 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2004-02-03 585-409-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BATAVIA NY
2004-02-03 585-409-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BATAVIA NY
2004-01-30 585-300-7XXX 7000–7999Assigned METROPCS, INC. 5562 BATAVIA NY
2004-01-29 585-295-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2004-01-29 585-350-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2004-01-29 585-350-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2004-01-29 585-697-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2004-01-29 585-760-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2004-01-29 585-770-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2004-01-29 585-770-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2004-01-27 585-978-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2004-01-21 585-267-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 EROCHESTER NY
2004-01-20 585-355-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2004-01-20 585-355-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2004-01-20 585-355-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2004-01-20 585-355-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2004-01-20 585-355-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2004-01-20 585-355-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2004-01-20 585-355-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2004-01-20 585-355-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2004-01-20 585-355-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2004-01-20 585-424-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2004-01-19 585-267-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J EROCHESTER NY
2004-01-16 585-366-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K HILTON NY
2004-01-15 585-257-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J HOLCOMB NY
2004-01-09 585-276-0XXX 0000–0999Assigned FRONTIER TELEPHONE OF ROCHESTER, INC. 0121 ROCHESTER NY
2004-01-09 585-276-1XXX 1000–1999Assigned FRONTIER TELEPHONE OF ROCHESTER, INC. 0121 ROCHESTER NY
2004-01-09 585-276-2XXX 2000–2999Assigned FRONTIER TELEPHONE OF ROCHESTER, INC. 0121 ROCHESTER NY
2004-01-09 585-276-3XXX 3000–3999Assigned FRONTIER TELEPHONE OF ROCHESTER, INC. 0121 ROCHESTER NY
2004-01-09 585-276-4XXX 4000–4999Assigned FRONTIER TELEPHONE OF ROCHESTER, INC. 0121 ROCHESTER NY
2004-01-09 585-276-5XXX 5000–5999Assigned FRONTIER TELEPHONE OF ROCHESTER, INC. 0121 ROCHESTER NY
2004-01-09 585-276-6XXX 6000–6999Assigned FRONTIER TELEPHONE OF ROCHESTER, INC. 0121 ROCHESTER NY
2004-01-09 585-276-7XXX 7000–7999Assigned FRONTIER TELEPHONE OF ROCHESTER, INC. 0121 ROCHESTER NY
2004-01-09 585-276-8XXX 8000–8999Assigned FRONTIER TELEPHONE OF ROCHESTER, INC. 0121 ROCHESTER NY
2004-01-09 585-276-9XXX 9000–9999Assigned FRONTIER TELEPHONE OF ROCHESTER, INC. 0121 ROCHESTER NY
2004-01-08 585-255-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2004-01-08 585-905-7XXX 7000–7999Assigned METROPCS, INC. 5562 CANANDAGUA NY
2003-12-23 585-368-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2003-12-23 585-391-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K BROCKPORT NY
2003-12-23 585-398-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K VICTOR NY
2003-12-23 585-571-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K SCOTTSVL NY
2003-12-23 585-582-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K HONEOYEFLS NY
2003-12-23 585-617-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K SPENCERPT NY
2003-12-23 585-905-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K CANANDAGUA NY
2003-12-15 585-935-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J ROCHESTER NY
2003-12-05 585-409-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BATAVIA NY
2003-12-01 585-770-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2003-11-24 585-267-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K EROCHESTER NY
2003-11-24 585-347-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K W WEBSTER NY
2003-11-24 585-486-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K HENRIETTA NY

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.