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 339
BANDWIDTH.COM CLEC, LLC - MA 51
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2019-05-02 339-210-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SAUGUS MA
2019-02-01 339-666-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E LYNN MA
2015-08-24 339-205-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WEYMOUTH MA
2015-05-14 339-333-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E LINCOLN MA
2015-05-14 339-793-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MARSHFIELD MA
2015-05-06 339-674-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MEDFORD MA
2015-04-21 339-298-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WOBURN MA
2015-04-21 339-645-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WOBURN MA
2014-03-03 339-298-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WOBURN MA
2012-05-08 339-236-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E HINGHAM MA
2011-09-14 339-244-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BRYANTVL MA
2011-05-31 339-204-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E DEDHAM MA
2011-05-31 339-226-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E REVERE MA
2011-05-31 339-499-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WEYMOUTH MA
2011-05-31 339-674-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MEDFORD MA
2011-05-31 339-707-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E ARLINGTON MA
2011-05-31 339-788-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E ROCKLAND MA
2011-05-31 339-970-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E LEXINGTON MA
2010-12-13 339-364-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SHARON MA
2010-10-18 339-224-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MALDEN MA
2010-08-17 339-204-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E DEDHAM MA
2010-08-17 339-226-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E REVERE MA
2010-08-17 339-368-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E ARLINGTON MA
2010-08-17 339-469-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E ROCKLAND MA
2010-08-17 339-674-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MEDFORD MA
2010-08-17 339-927-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WOBURN MA
2010-07-16 339-970-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E LEXINGTON MA
2010-07-13 339-234-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BURLINGTON MA
2010-05-27 339-236-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E HINGHAM MA
2010-05-27 339-244-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BRYANTVL MA
2010-05-27 339-502-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CANTON MA
2010-01-25 339-203-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WAKEFIELD MA
2010-01-22 339-221-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MEDFORD MA
2010-01-22 339-234-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BURLINGTON MA
2010-01-22 339-364-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SHARON MA
2010-01-22 339-707-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E ARLINGTON MA
2009-01-09 339-204-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E DEDHAM MA
2009-01-09 339-970-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E LEXINGTON MA
2008-11-10 339-200-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E HINGHAM MA
2008-11-10 339-203-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WAKEFIELD MA
2008-11-10 339-225-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEEDHAM MA
2008-11-10 339-234-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BURLINGTON MA
2008-11-10 339-244-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BRYANTVL MA
2008-11-10 339-364-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SHARON MA
2008-11-10 339-502-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CANTON MA
2008-11-10 339-526-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SCITUATE MA
2008-11-10 339-545-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MEDFORD MA
2008-11-10 339-645-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WOBURN MA
2008-11-10 339-707-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E ARLINGTON MA
2008-11-10 339-793-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MARSHFIELD MA

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.