NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

4 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 315
ONVOY, LLC- NY 4
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
2018-09-10 315-915-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CICERO NY
2018-08-31 315-275-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 UTICA NY
2018-08-29 315-216-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 OSWEGO NY
2018-08-27 315-787-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E GENEVA NY
2018-08-27 315-909-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEWARK NY
2018-08-27 315-920-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LIVERPOOL NY
2018-08-24 315-809-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E PHILA NY
2018-08-24 315-817-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SACKETSHBR NY
2018-08-24 315-897-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SYLVAN BCH NY
2018-08-24 315-993-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E WADDINGTON NY
2018-08-21 315-902-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CLYDE NY
2018-08-21 315-931-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MACDOUGALL NY
2018-08-21 315-947-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E FAIR HAVEN NY
2018-08-17 315-273-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAMILTON NY
2018-08-17 315-291-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SKANEATLES NY
2018-08-16 315-887-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FULTON NY
2018-08-15 315-535-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E GOUVERNEUR NY
2018-08-15 315-894-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ILION NY
2018-08-15 315-983-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HERKIMER NY
2018-08-15 315-997-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ONTARIO NY
2018-08-14 315-589-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E WILLIAMSON NY
2018-08-14 315-609-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E STAR LAKE NY
2018-08-14 315-626-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CATO NY
2018-08-14 315-996-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NORWOOD NY
2018-08-13 315-381-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CLINTON NY
2018-08-13 315-503-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MINOA NY
2018-08-13 315-740-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MASSENA NY
2018-08-13 315-989-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NORFOLK NY
2018-08-10 315-232-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C ADAMS NY
2018-08-10 315-275-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 UTICA NY
2018-08-10 315-275-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 UTICA NY
2018-08-10 315-465-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E MANNSVILLE NY
2018-08-10 315-644-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NATURALBDG NY
2018-08-10 315-669-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E DOLGEVILLE NY
2018-08-10 315-859-0XXX 0000–0999Assigned ONVOY, LLC- NY 384C CLINTON NY
2018-08-10 315-888-6XXX 6000–6999Assigned ONVOY, LLC- NY 384C AMBER NY
2018-08-08 315-502-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E PALMYRA NY
2018-08-08 315-508-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E LITTLE FLS NY
2018-08-08 315-543-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HARRISVL NY
2018-08-08 315-599-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E OSCEOLA NY
2018-08-08 315-678-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E LYSANDER NY
2018-08-07 315-275-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E UTICA NY
2018-08-07 315-330-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROME NY
2018-08-07 315-745-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SENECA FLS NY
2018-08-06 315-566-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E POTSDAM NY
2018-08-06 315-840-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E JORDAN NY
2018-07-30 315-916-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 AUBURN NY
2018-07-26 315-236-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E OSWEGO NY
2018-07-26 315-968-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E PARISH NY
2018-07-24 315-887-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E FULTON 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.