NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 330
ARMSTRONG TELECOMMUNICATIONS, INC. - OH 35
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
2017-11-15 330-330-8XXX 8000–8999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E YOUNGSTOWN OH
2016-05-26 330-967-4XXX 4000–4999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E CANFIELD OH
2014-04-25 330-624-5XXX 5000–5999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E BURBANK OH
2014-01-28 330-975-1XXX 1000–1999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E SEVILLE OH
2012-09-28 330-302-5XXX 5000–5999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E LODI OH
2012-01-26 330-667-7XXX 7000–7999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E CHATHAM OH
2010-11-15 330-282-3XXX 3000–3999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E CORTLAND OH
2010-11-15 330-772-1XXX 1000–1999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E HARTFORD OH
2010-11-15 330-924-6XXX 6000–6999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E JOHNSTON OH
2010-10-06 330-952-2XXX 2000–2999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E MEDINA OH
2009-10-16 330-953-3XXX 3000–3999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E YOUNGSTOWN OH
2009-06-01 330-817-2XXX 2000–2999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E LEETONIA OH
2008-09-18 330-952-1XXX 1000–1999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E MEDINA OH
2008-09-18 330-953-2XXX 2000–2999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E YOUNGSTOWN OH
2008-08-19 330-557-4XXX 4000–4999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E LAKEMILTON OH
2008-08-19 330-851-1XXX 1000–1999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E SEBRING OH
2008-08-14 330-485-2XXX 2000–2999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E RITTMAN OH
2008-08-14 330-619-7XXX 7000–7999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E SHARON OH
2008-06-26 330-625-6XXX 6000–6999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E HOMERVILLE OH
2008-06-26 330-648-7XXX 7000–7999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E SPENCER OH
2008-05-08 330-892-2XXX 2000–2999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E COLUMBIANA OH
2008-03-27 330-953-1XXX 1000–1999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E YOUNGSTOWN OH
2008-03-25 330-355-2XXX 2000–2999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E KINSMAN OH
2008-03-24 330-446-5XXX 5000–5999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E DAMASCUS OH
2008-03-21 330-992-0XXX 0000–0999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E NO JACKSON OH
2008-03-21 330-997-0XXX 0000–0999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E BERLIN CTR OH
2008-03-18 330-269-6XXX 6000–6999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E HUBBARD OH
2007-10-03 330-349-0XXX 0000–0999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E NILES OH
2007-09-28 330-483-1XXX 1000–1999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E VALLEYCITY OH
2007-09-28 330-520-4XXX 4000–4999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E MARSHALLVL OH
2007-08-31 330-286-3XXX 3000–3999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E CANFIELD OH
2007-08-31 330-536-4XXX 4000–4999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E LOWELLVL OH
2007-05-07 330-460-2XXX 2000–2999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E BRUNSWICK OH
2007-04-17 330-953-0XXX 0000–0999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E YOUNGSTOWN OH
2007-03-15 330-952-0XXX 0000–0999Assigned ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E MEDINA OH

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.