NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 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, all time — NPA 315
WESTELCOM NETWORK, INC. - NY 23
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
2026-01-08 315-894-1XXX 1000–1999Assigned WESTELCOM NETWORK, INC. - NY 1227 ILION NY
2019-05-08 315-346-2XXX 2000–2999Assigned WESTELCOM NETWORK, INC. - NY 1227 CROGHAN NY
2019-01-09 315-377-6XXX 6000–6999Assigned WESTELCOM NETWORK, INC. - NY 1227 LOWVILLE NY
2019-01-09 315-583-8XXX 8000–8999Assigned WESTELCOM NETWORK, INC. - NY 1227 ADAMS CTR NY
2018-10-26 315-848-8XXX 8000–8999Assigned WESTELCOM NETWORK, INC. - NY 1227 STAR LAKE NY
2015-02-11 315-764-8XXX 8000–8999Assigned WESTELCOM NETWORK, INC. - NY 1227 MASSENA NY
2012-01-30 315-375-5XXX 5000–5999Assigned WESTELCOM NETWORK, INC. - NY 1227 MORRISTOWN NY
2008-08-04 315-482-0XXX 0000–0999Assigned WESTELCOM NETWORK, INC. - NY 1227 ALEXNDRIBY NY
2007-05-16 315-686-6XXX 6000–6999Assigned WESTELCOM NETWORK, INC. - NY 1227 CLAYTON NY
2006-08-16 315-777-9XXX 9000–9999Assigned WESTELCOM NETWORK, INC. - NY 1227 WATERTOWN NY
2005-10-04 315-519-5XXX 5000–5999Assigned WESTELCOM NETWORK, INC. - NY 1227 CARTHAGE NY
2004-04-09 315-379-8XXX 8000–8999Assigned WESTELCOM NETWORK, INC. - NY 1227 CANTON NY
2004-04-09 315-535-1XXX 1000–1999Assigned WESTELCOM NETWORK, INC. - NY 1227 GOUVERNEUR NY
2004-04-09 315-713-9XXX 9000–9999Assigned WESTELCOM NETWORK, INC. - NY 1227 OGDENSBURG NY
2004-04-09 315-742-9XXX 9000–9999Assigned WESTELCOM NETWORK, INC. - NY 1227 POTSDAM NY
2003-03-13 315-755-0XXX 0000–0999Assigned WESTELCOM NETWORK, INC. - NY 1227 WATERTOWN NY
2003-03-13 315-755-1XXX 1000–1999Assigned WESTELCOM NETWORK, INC. - NY 1227 WATERTOWN NY
2003-03-13 315-755-2XXX 2000–2999Assigned WESTELCOM NETWORK, INC. - NY 1227 WATERTOWN NY
2003-03-13 315-755-3XXX 3000–3999Assigned WESTELCOM NETWORK, INC. - NY 1227 WATERTOWN NY
2003-03-13 315-755-4XXX 4000–4999Assigned WESTELCOM NETWORK, INC. - NY 1227 WATERTOWN NY
2003-03-13 315-755-6XXX 6000–6999Assigned WESTELCOM NETWORK, INC. - NY 1227 WATERTOWN NY
2003-03-13 315-755-7XXX 7000–7999Assigned WESTELCOM NETWORK, INC. - NY 1227 WATERTOWN NY
2003-03-13 315-755-9XXX 9000–9999Assigned WESTELCOM NETWORK, INC. - NY 1227 WATERTOWN 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.