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
2014-06-25 585-485-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K EROCHESTER NY
2014-06-23 585-433-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E VICTOR NY
2014-06-10 585-622-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2014-06-09 585-326-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E AKRON NY
2014-06-09 585-326-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E AKRON NY
2014-06-02 585-622-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2014-06-02 585-622-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2014-06-02 585-622-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2014-05-29 585-308-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E LE ROY NY
2014-05-29 585-376-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E OLEAN NY
2014-05-28 585-280-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WEBSTER NY
2014-05-28 585-283-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBION NY
2014-05-28 585-485-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J EROCHESTER NY
2014-05-22 585-993-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BATAVIA NY
2014-05-16 585-471-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2014-05-16 585-471-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2014-05-16 585-471-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2014-05-16 585-471-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ROCHESTER NY
2014-05-15 585-326-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E AKRON NY
2014-05-08 585-978-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K ROCHESTER NY
2014-04-30 585-435-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2014-04-28 585-364-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K FAIRPORT NY
2014-04-28 585-441-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 ROCHESTER NY
2014-04-28 585-626-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WEBSTER NY
2014-04-24 585-445-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ROCHESTER NY
2014-04-23 585-485-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 EROCHESTER NY
2014-04-11 585-653-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ARCADE NY
2014-04-10 585-449-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BELMONT NY
2014-04-08 585-866-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MIDDLEPORT NY
2014-04-08 585-900-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CHAFFEE NY
2014-04-08 585-969-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E PERRY NY
2014-04-01 585-376-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 OLEAN NY
2014-04-01 585-443-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E GENESEO NY
2014-04-01 585-483-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BATAVIA NY
2014-03-11 585-449-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 BELMONT NY
2014-03-06 585-228-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 WARSAW NY
2014-03-06 585-443-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 GENESEO NY
2014-02-28 585-219-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BATAVIA NY
2014-02-28 585-626-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WEBSTER NY
2014-02-26 585-206-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HOLLEY NY
2014-02-26 585-397-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2014-02-26 585-441-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2014-02-26 585-445-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2014-02-26 585-445-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J ROCHESTER NY
2014-02-26 585-481-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2014-02-26 585-483-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BATAVIA NY
2014-02-21 585-318-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MEDINA NY
2014-02-21 585-484-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2014-02-21 585-484-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2014-02-21 585-484-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E 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.