NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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, last 30 days — NPA 410
ONVOY, LLC - MD 2
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
2013-02-18 410-934-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F ANNAPOLIS MD
2013-02-07 410-449-9XXX 9000–9999Assigned METROPCS, INC. 5562 SOLOMONS MD
2013-01-09 410-775-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 UNION BDG MD
2013-01-03 410-921-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F SEVERN MD
2013-01-03 410-921-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F SEVERN MD
2013-01-03 410-989-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F FORK MD
2013-01-03 410-989-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F FORK MD
2013-01-03 410-989-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F FORK MD
2012-12-13 410-741-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF MARYLAND, LLC - MD 7591 WEST RIVER MD
2012-11-12 410-220-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ELKRIDGE MD
2012-11-12 410-449-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SOLOMONS MD
2012-11-09 410-220-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F ELKRIDGE MD
2012-11-08 410-497-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J PARKVILLE MD
2012-10-30 410-680-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ELLICOTTCY MD
2012-09-20 410-803-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F FORK 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
2012-09-14 410-834-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WATERLO236 MD
2012-09-14 410-870-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F PARKVILLE MD
2012-09-12 410-449-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D SOLOMONS MD
2012-09-12 410-457-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D DARLINGTON MD
2012-09-12 410-618-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D PERRYVILLE MD
2012-09-12 410-807-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D CATONSVL MD
2012-09-11 410-656-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D NORTH EAST MD
2012-09-11 410-834-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D WATERLO236 MD
2012-09-11 410-989-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D FORK MD
2012-08-21 410-874-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ODENTON MD
2012-08-15 410-862-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MD 7325 WATERLO236 MD
2012-08-14 410-384-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F SEVERNA PK MD
2012-08-14 410-975-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F SEVERNA PK MD
2012-07-16 410-670-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F EDGEWOOD MD
2012-07-16 410-846-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F SEVERN MD
2012-07-05 410-695-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 ODENTON MD
2012-06-29 410-304-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J QUEENSTOWN MD
2012-06-29 410-390-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J OCEAN CITY MD
2012-06-25 410-344-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J CHASE MD
2012-06-21 410-831-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MD 7325 SALISBURY MD
2012-06-20 410-745-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MD 7325 STMICHAELS MD
2012-06-18 410-934-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F ANNAPOLIS MD
2012-06-11 410-755-0XXX 0000–0999Assigned IDT AMERICA, CORP. - MD 228C WARWICK 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.