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 610
BARR TELL USA, INC. - PA 19
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
2016-01-12 610-200-7XXX 7000–7999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN14 PA
2016-01-12 610-274-5XXX 5000–5999Assigned BARR TELL USA, INC. - PA 752H LANDENBERG PA
2016-01-12 610-300-9XXX 9000–9999Assigned BARR TELL USA, INC. - PA 752H PHOENIXVL PA
2016-01-12 610-440-7XXX 7000–7999Assigned BARR TELL USA, INC. - PA 752H NORTHAMPTN PA
2016-01-12 610-500-7XXX 7000–7999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN10 PA
2016-01-12 610-541-5XXX 5000–5999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN13 PA
2016-01-12 610-548-1XXX 1000–1999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN12 PA
2016-01-12 610-609-5XXX 5000–5999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN21 PA
2016-01-12 610-665-5XXX 5000–5999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN29 PA
2016-01-12 610-677-7XXX 7000–7999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN23 PA
2016-01-12 610-699-6XXX 6000–6999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN28 PA
2016-01-12 610-707-7XXX 7000–7999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN22 PA
2016-01-12 610-710-7XXX 7000–7999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN26 PA
2016-01-12 610-713-7XXX 7000–7999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN17 PA
2016-01-12 610-795-0XXX 0000–0999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN24 PA
2016-01-12 610-801-5XXX 5000–5999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN25 PA
2016-01-12 610-810-9XXX 9000–9999Assigned BARR TELL USA, INC. - PA 752H EASTON PA
2016-01-12 610-877-5XXX 5000–5999Assigned BARR TELL USA, INC. - PA 752H PHPHSBZN31 PA
2016-01-12 610-904-0XXX 0000–0999Assigned BARR TELL USA, INC. - PA 752H EMMAUS 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.