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 443
PEERLESS NETWORK OF MARYLAND, LLC 121
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
2025-01-27 443-265-3XXX 3000–3999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G FORK MD
2024-12-20 443-550-0XXX 0000–0999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G NORTHBEACH MD
2024-02-22 443-516-5XXX 5000–5999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SYKESVILLE MD
2021-11-03 443-936-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ELKRIDGE MD
2021-02-22 443-565-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G RANDALLSTN MD
2021-02-22 443-689-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G COCKEYSVL MD
2020-10-16 443-339-2XXX 2000–2999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SHERWD FOR MD
2020-10-16 443-384-5XXX 5000–5999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G PARKVILLE MD
2020-09-30 443-396-5XXX 5000–5999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ODENTON MD
2020-09-30 443-399-5XXX 5000–5999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G DUNDALK MD
2020-09-30 443-724-7XXX 7000–7999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G EASTON MD
2020-09-29 443-335-6XXX 6000–6999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BRYNPKLNCM MD
2020-07-28 443-704-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ODENTON MD
2020-05-26 443-626-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G CHASE MD
2019-02-07 443-947-2XXX 2000–2999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G PERRYVILLE MD
2019-02-06 443-788-3XXX 3000–3999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ABERDEEN MD
2018-10-22 443-439-0XXX 0000–0999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G TRAPPE MD
2018-10-19 443-335-2XXX 2000–2999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BRYNPKLNCM MD
2018-10-19 443-795-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SEVERN MD
2018-02-09 443-439-4XXX 4000–4999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G TRAPPE MD
2017-02-06 443-258-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G EASTON MD
2015-03-24 443-445-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G ELKRIDGE MD
2014-05-01 443-410-0XXX 0000–0999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G GLENBURNIE MD
2013-04-09 443-464-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G CHURCHVL MD
2013-04-09 443-464-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G CHURCHVL MD
2013-04-05 443-294-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WEST RIVER MD
2013-04-05 443-429-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WOODLAWN MD
2013-04-05 443-429-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WOODLAWN MD
2013-04-05 443-607-5XXX 5000–5999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WEST RIVER MD
2013-04-05 443-609-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SYKESVILLE MD
2013-04-05 443-609-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SYKESVILLE MD
2013-04-05 443-636-4XXX 4000–4999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G CATONSVL MD
2013-04-05 443-662-7XXX 7000–7999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SPARKSGLNC MD
2013-04-05 443-662-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SPARKSGLNC MD
2013-04-05 443-860-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G CATONSVL MD
2013-04-05 443-899-7XXX 7000–7999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WATERLO238 MD
2013-04-05 443-899-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WATERLO238 MD
2013-04-05 443-914-7XXX 7000–7999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WORTHINGTN MD
2013-04-05 443-914-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WORTHINGTN MD
2013-04-05 443-937-7XXX 7000–7999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G UNION BDG MD
2013-04-05 443-937-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G UNION BDG MD
2013-04-05 443-943-0XXX 0000–0999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SPARROWSPT MD
2013-04-05 443-943-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G SPARROWSPT MD
2013-04-05 443-952-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WESTMINSTR MD
2013-04-05 443-952-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WESTMINSTR MD
2013-04-05 443-971-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G TANEYTOWN MD
2013-04-05 443-971-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G TANEYTOWN MD
2013-04-04 443-252-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G PERRYVILLE MD
2013-04-04 443-252-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G PERRYVILLE MD
2013-04-04 443-267-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G DARLINGTON 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.