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
2020-06-26 410-510-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H FORK MD
2020-06-26 410-510-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H FORK MD
2020-06-26 410-510-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H FORK MD
2020-06-05 410-498-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D COCKEYSVL MD
2020-06-05 410-498-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D COCKEYSVL MD
2020-06-05 410-498-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D COCKEYSVL MD
2020-06-05 410-498-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D COCKEYSVL MD
2020-06-04 410-368-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F BALTIMORE MD
2020-05-26 410-914-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G CHURCHVL MD
2020-05-11 410-420-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BEL AIR MD
2020-05-05 410-208-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D BERLIN MD
2020-04-08 410-210-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GLENBURNIE MD
2020-04-08 410-210-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GLENBURNIE MD
2020-04-08 410-210-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GLENBURNIE MD
2020-04-08 410-863-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GLENBURNIE MD
2020-04-08 410-863-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GLENBURNIE MD
2020-03-31 410-835-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D WILLARDS MD
2020-03-31 410-883-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D SHARPTOWN MD
2020-03-31 410-883-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D SHARPTOWN MD
2020-03-26 410-210-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GLENBURNIE MD
2020-03-26 410-907-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WOODLAWN MD
2020-03-26 410-907-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WOODLAWN MD
2020-03-23 410-406-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ESSEX MD
2020-03-20 410-670-6XXX 6000–6999Assigned METROPCS, INC. 5562 EDGEWOOD MD
2020-03-16 410-862-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D WATERLO236 MD
2020-03-16 410-888-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D WATERLO236 MD
2020-01-28 410-405-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F FORK 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
2020-01-23 410-513-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PARKVILLE MD
2019-12-31 410-670-1XXX 1000–1999Assigned METROPCS, INC. 5562 EDGEWOOD MD
2019-12-12 410-671-8XXX 8000–8999Assigned METROPCS, INC. 5562 EDGEWOOD MD
2019-11-19 410-834-4XXX 4000–4999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WATERLO236 MD
2019-11-07 410-226-9XXX 9000–9999Assigned TELNYX LLC 073H OXFORD MD
2019-11-05 410-936-2XXX 2000–2999Assigned METROPCS, INC. 5562 SALISBURY MD
2019-10-22 410-936-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 SALISBURY MD
2019-10-14 410-907-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WOODLAWN MD
2019-09-18 410-432-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SEVERNA PK MD
2019-08-01 410-684-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 GLENBURNIE MD
2019-08-01 410-865-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 GLENBURNIE MD
2019-07-29 410-819-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 EASTON MD
2019-07-26 410-513-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PARKVILLE MD
2019-07-15 410-429-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC.- MD 2593 WORTHINGTN MD
2019-07-15 410-429-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC.- MD 2593 WORTHINGTN MD
2019-07-15 410-450-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F BALTIMORE MD
2019-07-15 410-617-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F BALTIMORE MD
2019-07-15 410-801-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F BALTIMORE MD
2019-07-15 410-801-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F BALTIMORE MD
2019-07-12 410-357-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC.- MD 2593 PARKTON MD
2019-07-12 410-357-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC.- MD 2593 PARKTON 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.