NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

70 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2026-09-02 667-560-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE MD
2026-09-02 667-560-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE MD
2026-09-02 667-560-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE MD
2026-09-02 667-560-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE MD
2026-09-02 667-560-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE MD
2026-09-02 667-560-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE MD
2026-09-02 667-570-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE MD
2026-09-02 667-570-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE MD
2026-09-02 667-570-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE MD
2026-09-02 667-570-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE MD
2026-08-26 667-474-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D ARGRGBSNIS MD
2026-08-26 667-484-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D WESTMINSTR MD
2026-08-26 667-484-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D WESTMINSTR MD
2026-08-26 667-532-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D PARKVILLE MD
2026-08-26 667-537-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D ESSEX MD
2026-08-25 667-541-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 GLENBURNIE MD
2026-08-25 667-560-2XXX 2000–2999Assigned METROPCS, INC. 5562 BALTIMORE MD
2026-08-25 667-570-9XXX 9000–9999Assigned METROPCS, INC. 5562 BALTIMORE MD
2026-08-24 667-548-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D TOWSON MD
2026-08-24 667-548-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D TOWSON MD
2026-08-20 667-255-7XXX 7000–7999Assigned OPENTACT INC. 824J HILLSBORO MD
2026-08-20 667-547-4XXX 4000–4999Assigned INTRADO COMMUNICATIONS, LLC 820C BALTIMORE MD
2026-08-20 667-560-0XXX 0000–0999Assigned INTRADO COMMUNICATIONS, LLC 820C BALTIMORE MD
2026-08-20 667-560-1XXX 1000–1999Assigned INTRADO COMMUNICATIONS, LLC 820C BALTIMORE MD
2026-08-19 667-527-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J GLENBURNIE MD
2026-08-17 667-547-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F BALTIMORE MD
2026-08-17 667-547-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F BALTIMORE MD
2026-08-13 667-254-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHESTERTN MD
2026-08-13 667-384-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 SALISBURY MD
2026-08-13 667-384-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 SALISBURY MD
2026-08-13 667-737-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 PERRYVILLE MD
2026-08-12 667-489-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D HAMPSTEAD MD
2026-08-12 667-498-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D ARBUTUS MD
2026-08-12 667-549-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D ANNAPOLIS MD
2026-08-07 667-447-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D COLUMBIA MD
2026-08-05 667-560-9XXX 9000–9999Assigned METROPCS, INC. 5562 BALTIMORE MD
2026-07-30 667-479-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D ELLICOTTCY MD
2026-07-30 667-482-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2026-07-28 667-532-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D PARKVILLE MD
2026-07-28 667-532-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D PARKVILLE MD
2026-07-28 667-537-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D ESSEX MD
2026-07-28 667-541-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D GLENBURNIE MD
2026-07-28 667-541-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D GLENBURNIE MD
2026-07-27 667-553-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SUDLERSVL MD
2026-07-23 667-551-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ANNAPOLIS MD
2026-07-23 667-551-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ANNAPOLIS MD
2026-07-23 667-551-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ANNAPOLIS MD
2026-07-23 667-551-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ANNAPOLIS MD
2026-07-22 667-475-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D CROFTON MD
2026-07-22 667-517-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D CATONSVL MD

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.