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 410
PEERLESS NETWORK OF MARYLAND, LLC 45
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
2020-12-10 410-888-0XXX 0000–0999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WATERLO236 MD
2020-09-29 410-724-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WATERLO236 MD
2020-05-26 410-914-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G CHURCHVL MD
2020-01-27 410-210-4XXX 4000–4999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G GLENBURNIE MD
2020-01-27 410-505-7XXX 7000–7999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ELLICOTTCY MD
2019-11-19 410-834-4XXX 4000–4999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WATERLO236 MD
2019-02-26 410-847-7XXX 7000–7999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G TOWSON MD
2019-02-06 410-264-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WATERLO236 MD
2018-02-09 410-973-4XXX 4000–4999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BERLIN MD
2018-02-06 410-604-4XXX 4000–4999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G STEVENSVL MD
2016-01-29 410-618-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G PERRYVILLE MD
2015-11-09 410-431-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SEVERNA PK MD
2015-11-09 410-892-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G GLENBURNIE MD
2015-09-21 410-505-0XXX 0000–0999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ELLICOTTCY MD
2015-05-13 410-216-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ANNAPOLIS MD
2013-04-05 410-231-7XXX 7000–7999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SOLOMONS MD
2013-04-05 410-449-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SOLOMONS MD
2013-04-04 410-220-0XXX 0000–0999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ELKRIDGE MD
2013-04-04 410-220-4XXX 4000–4999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ELKRIDGE MD
2013-04-04 410-457-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G DARLINGTON MD
2013-04-04 410-862-0XXX 0000–0999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WATERLO236 MD
2013-04-04 410-862-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WATERLO236 MD
2013-03-13 410-807-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G CATONSVL MD
2013-03-13 410-807-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G CATONSVL MD
2012-09-17 410-401-0XXX 0000–0999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BRYNPKLNCM MD
2012-09-17 410-401-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BRYNPKLNCM MD
2012-09-17 410-401-4XXX 4000–4999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BRYNPKLNCM MD
2012-09-17 410-846-6XXX 6000–6999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SEVERN MD
2012-09-17 410-846-7XXX 7000–7999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SEVERN MD
2012-09-17 410-846-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SEVERN MD
2012-09-17 410-874-0XXX 0000–0999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ODENTON MD
2012-09-17 410-874-4XXX 4000–4999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ODENTON MD
2012-09-17 410-874-5XXX 5000–5999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ODENTON MD
2012-09-17 410-934-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ANNAPOLIS MD
2012-09-17 410-934-5XXX 5000–5999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ANNAPOLIS MD
2012-09-17 410-934-6XXX 6000–6999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ANNAPOLIS MD
2011-10-04 410-844-0XXX 0000–0999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-10-04 410-844-3XXX 3000–3999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-10-04 410-844-4XXX 4000–4999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-10-04 410-844-5XXX 5000–5999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-10-04 410-844-6XXX 6000–6999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-10-04 410-844-7XXX 7000–7999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-10-04 410-844-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-10-04 410-844-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2010-07-20 410-834-2XXX 2000–2999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WATERLO236 MD

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.