NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 301
ONVOY, LLC - MD 1
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
2022-12-29 301-462-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2022-12-29 301-462-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2022-12-29 301-462-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2022-12-29 301-462-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2022-12-29 301-465-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2022-12-21 301-201-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-12-08 301-635-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D WSHNGTNZN5 MD
2022-11-15 301-201-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2022-11-15 301-201-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2022-11-15 301-201-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2022-11-15 301-201-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2022-11-15 301-409-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D WSHNGTNZN2 MD
2022-11-15 301-409-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D WSHNGTNZN2 MD
2022-11-15 301-409-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D WSHNGTNZN2 MD
2022-11-15 301-409-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D WSHNGTNZN2 MD
2022-11-07 301-201-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-11-07 301-201-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-10-21 301-550-4XXX 4000–4999Assigned METROPCS, INC. 5562 WSNGTNZN10 MD
2022-10-05 301-550-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2022-10-05 301-635-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN5 MD
2022-09-29 301-378-5XXX 5000–5999Assigned METROPCS, INC. 5562 FREDERICK MD
2022-09-22 301-448-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN3 MD
2022-09-15 301-550-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D WSNGTNZN10 MD
2022-09-06 301-378-6XXX 6000–6999Assigned TERRA NOVA TELECOM INC. 145J FREDERICK MD
2022-08-30 301-301-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2022-08-30 301-301-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2022-08-30 301-301-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2022-08-30 301-301-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2022-08-30 301-301-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2022-08-30 301-301-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2022-08-30 301-301-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2022-08-30 301-301-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2022-08-30 301-301-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2022-08-30 301-301-9XXX 9000–9999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2022-08-05 301-550-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSNGTNZN10 MD
2022-08-05 301-550-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSNGTNZN10 MD
2022-07-26 301-450-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D WSHNGTNZN3 MD
2022-07-26 301-450-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D WSHNGTNZN3 MD
2022-07-26 301-450-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D WSHNGTNZN3 MD
2022-07-26 301-450-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D WSHNGTNZN3 MD
2022-07-26 301-550-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-07-26 301-550-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-07-26 301-550-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-07-26 301-550-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-07-26 301-550-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-07-25 301-389-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D WSNG236Z13 MD
2022-07-25 301-450-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN3 MD
2022-07-25 301-450-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN3 MD
2022-07-25 301-450-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN3 MD
2022-07-25 301-450-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN3 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.