NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 508
YMAX COMMUNICATIONS CORP. - MA 37
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
2011-03-03 508-861-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - MA 316E FRAMINGHAM MA
2011-01-12 508-731-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - MA 316E OXFORD MA
2009-11-04 508-921-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - MA 316E WALPOLE MA
2009-08-11 508-296-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - MA 316E CATAUMET MA
2009-08-11 508-388-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - MA 316E FALMOUTH MA
2009-08-11 508-465-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - MA 316E CARVER MA
2009-08-11 508-499-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - MA 316E OXFORD MA
2009-08-11 508-970-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - MA 316E MARLBORO MA
2009-07-14 508-656-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - MA 316E FRAMINGHAM MA
2009-02-26 508-470-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - MA 316E DENNIS MA
2009-02-04 508-297-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - MA 316E EASTON MA
2009-02-04 508-659-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - MA 316E BRIDGEWTR MA
2009-02-04 508-659-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - MA 316E BRIDGEWTR MA
2008-10-30 508-381-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - MA 316E MILFORD MA
2008-10-30 508-745-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - MA 316E NATICK MA
2008-09-04 508-299-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - MA 316E FALMOUTH MA
2008-09-04 508-405-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - MA 316E FRAMINGHAM MA
2008-09-04 508-731-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - MA 316E OXFORD MA
2008-09-04 508-970-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - MA 316E MARLBORO MA
2008-08-29 508-217-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - MA 316E BRIDGEWTR MA
2008-06-19 508-967-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - MA 316E TAUNTON MA
2008-04-25 508-598-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - MA 316E FRAMINGHAM MA
2008-02-08 508-514-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - MA 316E WELLFLEET MA
2008-02-08 508-921-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - MA 316E WALPOLE MA
2008-02-08 508-977-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - MA 316E TAUNTON MA
2008-02-07 508-217-1XXX 1000–1999Assigned YMAX COMMUNICATIONS CORP. - MA 316E BRIDGEWTR MA
2008-02-07 508-258-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - MA 316E DENNIS MA
2008-02-07 508-296-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - MA 316E CATAUMET MA
2008-02-07 508-297-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - MA 316E EASTON MA
2008-02-07 508-299-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - MA 316E FALMOUTH MA
2008-02-07 508-310-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - MA 316E NATICK MA
2008-02-07 508-458-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - MA 316E MILFORD MA
2008-02-07 508-465-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - MA 316E CARVER MA
2008-02-07 508-480-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - MA 316E MARLBORO MA
2008-02-07 508-499-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - MA 316E OXFORD MA
2007-07-13 508-796-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - MA 316E WORCESTER MA
2007-07-12 508-598-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - MA 316E FRAMINGHAM MA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.