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
2010-12-07 301-678-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F HANCOCK MD
2010-12-07 301-744-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F INDIANHEAD MD
2010-12-07 301-842-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F CLEAR SPG MD
2010-11-03 301-747-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN6 MD
2010-11-02 301-955-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J WSHNGTNZN4 MD
2010-11-02 301-955-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WSHNGTNZN4 MD
2010-11-02 301-955-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WSHNGTNZN4 MD
2010-11-02 301-955-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WSHNGTNZN4 MD
2010-11-02 301-955-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J WSHNGTNZN4 MD
2010-10-29 301-710-2XXX 2000–2999Assigned METROPCS, INC. 5562 WALDORF MD
2010-10-29 301-710-3XXX 3000–3999Assigned METROPCS, INC. 5562 WALDORF MD
2010-10-29 301-710-4XXX 4000–4999Assigned METROPCS, INC. 5562 WALDORF MD
2010-10-29 301-710-7XXX 7000–7999Assigned METROPCS, INC. 5562 WALDORF MD
2010-10-29 301-710-8XXX 8000–8999Assigned METROPCS, INC. 5562 WALDORF MD
2010-10-06 301-310-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL238 MD
2010-09-29 301-637-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN10 MD
2010-09-29 301-800-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAGERSTOWN MD
2010-09-29 301-800-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAGERSTOWN MD
2010-09-28 301-747-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN6 MD
2010-09-28 301-778-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN5 MD
2010-09-28 301-778-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN5 MD
2010-09-22 301-812-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - MD 281E WSNG238Z15 MD
2010-09-21 301-500-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2010-09-21 301-500-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2010-09-21 301-500-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2010-09-21 301-500-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2010-09-21 301-500-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2010-09-20 301-327-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSNG238Z15 MD
2010-09-17 301-304-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WALKERSVL MD
2010-09-17 301-882-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F NEW MARKET MD
2010-09-17 301-968-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN2 MD
2010-09-15 301-366-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GAITHERSBG MD
2010-09-10 301-892-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WSHNGTNZN4 MD
2010-09-01 301-820-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GAITHERSBG MD
2010-08-23 301-836-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - MD 281E WSHNGTNZN5 MD
2010-08-23 301-836-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - MD 281E WSHNGTNZN5 MD
2010-08-20 301-892-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - MD 281E WSHNGTNZN4 MD
2010-08-20 301-892-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - MD 281E WSHNGTNZN4 MD
2010-08-20 301-968-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - MD 281E WSHNGTNZN2 MD
2010-08-05 301-969-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F BRUNSWICK MD
2010-07-21 301-458-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN4 MD
2010-07-21 301-458-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN4 MD
2010-07-21 301-636-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN5 MD
2010-07-21 301-636-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN5 MD
2010-07-21 301-747-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN6 MD
2010-07-21 301-747-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN6 MD
2010-07-21 301-966-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSNGTNZN12 MD
2010-07-21 301-966-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSNGTNZN12 MD
2010-07-20 301-349-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F POOLESVL MD
2010-07-20 301-539-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F LA PLATA 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.