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
2014-11-03 315-951-9XXX 9000–9999Assigned ONVOY, LLC- NY 384C CANASTOTA NY
2014-11-03 315-965-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WATERTOWN NY
2014-11-03 315-973-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CLAYTON NY
2014-10-28 315-864-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 UTICA NY
2014-10-28 315-930-0XXX 0000–0999Assigned ONVOY, LLC- NY 384C SYRACUSE NY
2014-10-28 315-930-1XXX 1000–1999Assigned ONVOY, LLC- NY 384C SYRACUSE NY
2014-10-27 315-517-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ALEXNDRIBY NY
2014-10-22 315-813-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SYLVAN BCH NY
2014-10-16 315-202-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WATERVILLE NY
2014-10-16 315-203-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ADAMS NY
2014-10-16 315-205-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 REMSEN NY
2014-10-16 315-210-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEWARK NY
2014-10-16 315-217-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SKANEATLES NY
2014-10-16 315-258-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AUBURN NY
2014-10-16 315-259-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CLAYVILLE NY
2014-10-16 315-274-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J POTSDAM NY
2014-10-16 315-305-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 BRANCHPORT NY
2014-10-16 315-309-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J STAR LAKE NY
2014-10-16 315-325-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GENEVA NY
2014-10-16 315-344-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HEUVELTON NY
2014-10-16 315-353-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NORWOOD NY
2014-10-16 315-354-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 RAQUETTELK NY
2014-10-16 315-364-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J POPLAR RDG NY
2014-10-16 315-375-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 MORRISTOWN NY
2014-10-16 315-379-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 CANTON NY
2014-10-16 315-384-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NORFOLK NY
2014-10-16 315-387-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 SANDYCREEK NY
2014-10-16 315-398-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LYONS NY
2014-10-16 315-407-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CAMILLUS NY
2014-10-16 315-417-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ILION NY
2014-10-16 315-496-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SEMPRONIUS NY
2014-10-16 315-504-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LAFAYETTE NY
2014-10-16 315-509-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 PULASKI NY
2014-10-16 315-516-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LIVERPOOL NY
2014-10-16 315-522-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 GOUVERNEUR NY
2014-10-16 315-531-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 PENN YAN NY
2014-10-16 315-537-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARRISVL NY
2014-10-16 315-538-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MACEDON NY
2014-10-16 315-544-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CARTHAGE NY
2014-10-16 315-549-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FAYETTE NY
2014-10-16 315-585-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MACDOUGALL NY
2014-10-16 315-587-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NORTH ROSE NY
2014-10-16 315-594-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WOLCOTT NY
2014-10-16 315-599-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OSCEOLA NY
2014-10-16 315-602-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OSWEGO NY
2014-10-16 315-614-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OGDENSBURG NY
2014-10-16 315-618-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LITTLE FLS NY
2014-10-16 315-627-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MINOA NY
2014-10-16 315-643-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MASSENA NY
2014-10-16 315-644-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NATURALBDG 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.