NumberResearch Membership · Data 09/26/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026

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 978
BARR TELL USA, INC. - MA 21
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
2015-12-02 978-252-6XXX 6000–6999Assigned BARR TELL USA, INC. - MA 732H ASHBURNHAM MA
2015-12-02 978-504-4XXX 4000–4999Assigned BARR TELL USA, INC. - MA 732H AMESBURY MA
2015-12-02 978-541-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H ATHOL MA
2015-12-02 978-543-6XXX 6000–6999Assigned BARR TELL USA, INC. - MA 732H NO READING MA
2015-12-02 978-580-2XXX 2000–2999Assigned BARR TELL USA, INC. - MA 732H CONCORD MA
2015-12-02 978-593-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H ATHOLFKLN MA
2015-12-02 978-599-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H SALEM MA
2015-12-02 978-625-8XXX 8000–8999Assigned BARR TELL USA, INC. - MA 732H BILLERICA MA
2015-12-02 978-699-2XXX 2000–2999Assigned BARR TELL USA, INC. - MA 732H ANDOVER MA
2015-12-02 978-708-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H GROTON MA
2015-12-02 978-722-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H LAWRENCE MA
2015-12-02 978-754-2XXX 2000–2999Assigned BARR TELL USA, INC. - MA 732H GARDNER MA
2015-12-02 978-757-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H AYER MA
2015-12-02 978-795-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H ACTON MA
2015-12-02 978-879-2XXX 2000–2999Assigned BARR TELL USA, INC. - MA 732H GLOUCESTER MA
2015-12-02 978-904-9XXX 9000–9999Assigned BARR TELL USA, INC. - MA 732H NEWBURYPT MA
2015-12-02 978-906-7XXX 7000–7999Assigned BARR TELL USA, INC. - MA 732H FITCHBURG MA
2015-12-02 978-907-7XXX 7000–7999Assigned BARR TELL USA, INC. - MA 732H DANVERS MA
2015-12-02 978-954-9XXX 9000–9999Assigned BARR TELL USA, INC. - MA 732H LOWELL MA
2015-12-02 978-971-5XXX 5000–5999Assigned BARR TELL USA, INC. - MA 732H HAVERHILL MA
2015-12-02 978-990-9XXX 9000–9999Assigned BARR TELL USA, INC. - MA 732H LEOMINSTER MA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.