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 571
PEERLESS NETWORK OF VIRGINIA, LLC - VA 101
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2024-10-22 571-394-4XXX 4000–4999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G TRIANGLE VA
2024-10-22 571-681-5XXX 5000–5999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN19 VA
2024-02-20 571-656-5XXX 5000–5999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G TRIANGLE VA
2023-10-04 571-624-3XXX 3000–3999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN08 VA
2023-09-15 571-546-4XXX 4000–4999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN19 VA
2023-09-01 571-640-4XXX 4000–4999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G MANASSAS VA
2023-03-02 571-742-0XXX 0000–0999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DULLESMTRO VA
2023-03-02 571-742-1XXX 1000–1999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DULLESMTRO VA
2023-03-02 571-742-2XXX 2000–2999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DULLESMTRO VA
2023-03-02 571-742-3XXX 3000–3999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DULLESMTRO VA
2023-03-02 571-742-4XXX 4000–4999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DULLESMTRO VA
2023-03-02 571-742-5XXX 5000–5999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DULLESMTRO VA
2023-03-02 571-742-7XXX 7000–7999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DULLESMTRO VA
2022-05-27 571-746-8XXX 8000–8999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DULLES VA
2021-12-03 571-534-2XXX 2000–2999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G OCCOQUAN VA
2021-10-01 571-534-6XXX 6000–6999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G OCCOQUAN VA
2021-07-02 571-573-9XXX 9000–9999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G NOKESVILLE VA
2021-07-02 571-667-9XXX 9000–9999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G LORTON VA
2021-02-02 571-998-8XXX 8000–8999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G INDENDNTHL VA
2020-11-23 571-998-9XXX 9000–9999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G INDENDNTHL VA
2020-10-22 571-470-2XXX 2000–2999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN19 VA
2020-10-21 571-456-1XXX 1000–1999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G TRIANGLE VA
2020-10-21 571-755-0XXX 0000–0999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G HAYMARKET VA
2020-10-21 571-901-0XXX 0000–0999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G ENGLESIDE VA
2020-10-05 571-677-9XXX 9000–9999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DALE CITY VA
2020-10-02 571-463-4XXX 4000–4999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G ARCOLA VA
2020-10-02 571-475-1XXX 1000–1999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G BRADDOCK VA
2020-06-01 571-475-0XXX 0000–0999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G BRADDOCK VA
2020-06-01 571-496-7XXX 7000–7999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G LORTONMTRO VA
2020-05-01 571-496-1XXX 1000–1999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G LORTONMTRO VA
2020-03-31 571-410-5XXX 5000–5999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G LEESBURG VA
2020-03-31 571-842-0XXX 0000–0999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN08 VA
2020-02-05 571-461-5XXX 5000–5999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN17 VA
2020-02-03 571-454-6XXX 6000–6999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G MANASSAS VA
2020-02-03 571-464-5XXX 5000–5999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G HERNDON VA
2020-02-03 571-600-3XXX 3000–3999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DULLESMTRO VA
2019-12-02 571-400-7XXX 7000–7999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN08 VA
2019-12-02 571-407-2XXX 2000–2999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN19 VA
2019-09-09 571-498-9XXX 9000–9999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G LEESBURG VA
2019-08-21 571-776-8XXX 8000–8999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G HERNDON VA
2019-08-20 571-400-5XXX 5000–5999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN08 VA
2019-08-20 571-400-6XXX 6000–6999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN08 VA
2019-07-31 571-400-3XXX 3000–3999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN08 VA
2019-06-11 571-491-6XXX 6000–6999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DULLES VA
2019-06-10 571-401-9XXX 9000–9999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G HERNDON VA
2019-05-30 571-600-1XXX 1000–1999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DULLESMTRO VA
2019-04-26 571-833-3XXX 3000–3999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G MANASSAS VA
2019-02-12 571-347-1XXX 1000–1999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN08 VA
2019-02-12 571-360-3XXX 3000–3999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G INDENDNTHL VA
2019-02-12 571-407-9XXX 9000–9999Assigned PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G WSNGTNZN19 VA

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.