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 215
BARR TELL USA, INC. - PA 12
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
2016-01-12 215-315-1XXX 1000–1999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN39 PA
2016-01-12 215-366-6XXX 6000–6999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN38 PA
2016-01-12 215-377-7XXX 7000–7999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN44 PA
2016-01-12 215-379-9XXX 9000–9999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN34 PA
2016-01-12 215-458-0XXX 0000–0999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN42 PA
2016-01-12 215-488-8XXX 8000–8999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN45 PA
2016-01-12 215-544-4XXX 4000–4999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN37 PA
2016-01-12 215-602-5XXX 5000–5999Assigned BARR TELL USA, INC. - PA 752H PHLDLPHZN4 PA
2016-01-12 215-642-5XXX 5000–5999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN41 PA
2016-01-12 215-654-4XXX 4000–4999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN33 PA
2016-01-12 215-876-4XXX 4000–4999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN40 PA
2016-01-12 215-948-0XXX 0000–0999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN32 PA

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.