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 408
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 38
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
2025-11-17 408-731-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SUNNYVALE CA
2020-11-11 408-461-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAN MARTIN CA
2020-11-11 408-877-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SARATOGA CA
2020-08-10 408-547-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS WEST CA
2020-03-03 408-580-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS SOUTH CA
2019-12-02 408-580-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS SOUTH CA
2019-09-26 408-604-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SUNNYVALE CA
2019-08-06 408-830-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SUNNYVALE CA
2018-10-09 408-746-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SUNNYVALE CA
2018-09-24 408-686-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAN MARTIN CA
2018-08-02 408-944-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS NORTH CA
2016-09-16 408-752-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SUNNYVALE CA
2015-09-24 408-342-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS WEST CA
2013-12-05 408-707-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS NORTH CA
2013-03-08 408-442-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LOS GATOS CA
2013-03-08 408-809-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS SOUTH CA
2013-03-08 408-809-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS SOUTH CA
2013-03-08 408-819-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CAMPBELL CA
2013-03-08 408-909-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAN MARTIN CA
2013-03-04 408-618-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS NORTH CA
2013-03-04 408-618-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS NORTH CA
2013-03-04 408-913-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SARATOGA CA
2013-01-09 408-709-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS WEST CA
2013-01-09 408-709-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS WEST CA
2013-01-09 408-709-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS WEST CA
2013-01-09 408-709-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS WEST CA
2013-01-09 408-709-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS WEST CA
2011-10-21 408-550-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS WEST CA
2010-06-29 408-673-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS WEST CA
2010-06-29 408-673-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS WEST CA
2010-06-18 408-827-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LOS GATOS CA
2010-04-23 408-520-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS NORTH CA
2010-04-23 408-622-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS SOUTH CA
2010-01-19 408-458-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LOS GATOS CA
2008-12-18 408-418-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS WEST CA
2008-12-18 408-418-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS WEST CA
2008-12-18 408-418-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS WEST CA
2007-02-15 408-500-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MORGANHILL CA

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.