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 646
YMAX COMMUNICATIONS CORP. - NY 53
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
2011-08-24 646-455-2XXX 2000–2999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2011-08-24 646-937-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2011-08-24 646-937-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2011-04-14 646-527-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2011-04-14 646-527-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2010-11-09 646-499-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2010-11-09 646-499-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2010-11-09 646-499-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-09-21 646-395-0XXX 0000–0999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-09-21 646-396-1XXX 1000–1999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-09-21 646-396-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-09-21 646-396-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-09-21 646-396-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-09-21 646-524-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-09-21 646-524-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-09-21 646-597-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-09-21 646-597-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-350-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-350-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-350-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-350-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-355-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-355-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-368-0XXX 0000–0999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-368-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-368-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-434-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-434-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-434-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-807-1XXX 1000–1999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-875-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-875-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2009-01-27 646-929-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2008-07-31 646-571-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2008-07-31 646-571-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2008-07-31 646-657-1XXX 1000–1999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2008-07-31 646-657-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2008-07-31 646-807-2XXX 2000–2999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2008-07-31 646-807-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2008-07-31 646-929-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2007-05-11 646-300-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2007-05-11 646-312-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2007-05-11 646-340-0XXX 0000–0999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2007-05-11 646-340-2XXX 2000–2999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2007-05-11 646-340-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2007-05-11 646-340-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2007-05-11 646-340-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2007-05-11 646-340-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2007-05-11 646-340-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2007-05-11 646-719-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 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.