NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

70 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 667
NEW CINGULAR WIRELESS PCS, LLC - DC 38
ONVOY, LLC - MD 18
BANDWIDTH.COM CLEC, LLC - MD 6
METROPCS, INC. 2
INTRADO COMMUNICATIONS, LLC 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
2026-07-22 667-526-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D CENTREVL MD
2026-07-22 667-538-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D CHURCHVL MD
2026-07-16 667-493-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 ANNAPOLIS MD
2026-07-14 667-547-2XXX 2000–2999Assigned BOOST SUBSCRIBERCO L.L.C. 490J BALTIMORE MD
2026-07-14 667-547-6XXX 6000–6999Assigned BOOST SUBSCRIBERCO L.L.C. 490J BALTIMORE MD
2026-07-09 667-547-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F BALTIMORE MD
2026-07-08 667-474-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ARGRGBSNIS MD
2026-07-08 667-474-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ARGRGBSNIS MD
2026-07-08 667-474-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ARGRGBSNIS MD
2026-07-08 667-474-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ARGRGBSNIS MD
2026-07-08 667-509-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SEVERNA PK MD
2026-07-08 667-552-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SEVERNA PK MD
2026-07-08 667-552-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SEVERNA PK MD
2026-07-07 667-519-3XXX 3000–3999Assigned METROPCS, INC. 5562 BALTIMORE MD
2026-07-02 667-551-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D ANNAPOLIS MD
2026-07-02 667-551-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D ANNAPOLIS MD
2026-07-02 667-551-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D ANNAPOLIS MD
2026-07-02 667-551-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D ANNAPOLIS MD
2026-07-02 667-551-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D ANNAPOLIS MD
2026-07-02 667-551-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D ANNAPOLIS MD
2026-07-01 667-497-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 OCEAN CITY MD
2026-06-30 667-474-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D ARGRGBSNIS MD
2026-06-30 667-549-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D ANNAPOLIS MD
2026-06-26 667-462-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ELKTON MD
2026-06-26 667-547-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D BALTIMORE MD
2026-06-26 667-547-9XXX 9000–9999Assigned ONVOY, LLC - MD 876D BALTIMORE MD
2026-06-25 667-469-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BEL AIR MD
2026-06-25 667-546-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 PRINCEFRCK MD
2026-06-25 667-546-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 PRINCEFRCK MD
2026-06-25 667-546-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 PRINCEFRCK MD
2026-06-24 667-550-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-06-24 667-550-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-06-24 667-550-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-06-24 667-550-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-06-24 667-550-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-06-24 667-550-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLUMBIA MD
2026-06-10 667-523-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ODENTON MD
2026-06-08 667-547-7XXX 7000–7999Assigned BOOST SUBSCRIBERCO L.L.C. 490J BALTIMORE MD
2026-06-04 667-531-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F ABERDEEN MD
2026-06-04 667-549-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ANNAPOLIS MD
2026-06-04 667-549-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ANNAPOLIS MD
2026-06-04 667-549-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ANNAPOLIS MD
2026-06-04 667-549-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ANNAPOLIS MD
2026-06-01 667-548-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D TOWSON MD
2026-05-29 667-502-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 COLUMBIA MD
2026-05-29 667-508-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D WOODLAWN MD
2026-05-29 667-509-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D SEVERNA PK MD
2026-05-28 667-519-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE MD
2026-05-28 667-519-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE MD
2026-05-28 667-519-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE 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.