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
2007-02-06 301-609-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WALDORF MD
2007-01-26 301-238-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WSNGTNZN16 MD
2007-01-25 301-276-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J WSHNGTNZN4 MD
2007-01-18 301-377-7XXX 7000–7999Assigned VERIZON MARYLAND, INC. 9212 LAUREL236 MD
2007-01-17 301-605-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2007-01-10 301-547-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2007-01-08 301-473-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDERICK MD
2007-01-08 301-473-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDERICK MD
2007-01-04 301-609-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WALDORF MD
2007-01-04 301-609-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WALDORF MD
2006-12-20 301-444-4XXX 4000–4999Assigned VERIZON MARYLAND, INC. 9212 WSNGTNZN10 MD
2006-12-20 301-789-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN4 MD
2006-12-19 301-328-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2006-12-15 301-767-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN2 MD
2006-12-13 301-326-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2006-12-13 301-547-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2006-12-05 301-885-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WALDORF MD
2006-12-05 301-957-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL236 MD
2006-12-01 301-273-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2006-11-28 301-825-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSNGTNZN10 MD
2006-11-28 301-825-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSNGTNZN10 MD
2006-11-28 301-825-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSNGTNZN10 MD
2006-11-28 301-979-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSNGTNZN10 MD
2006-11-28 301-979-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSNGTNZN10 MD
2006-11-22 301-339-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WSNGTNZN10 MD
2006-11-21 301-534-0XXX 0000–0999Assigned YMAX COMMUNICATIONS CORP. - MD 281E INDIANHEAD MD
2006-11-21 301-534-1XXX 1000–1999Assigned YMAX COMMUNICATIONS CORP. - MD 281E INDIANHEAD MD
2006-11-21 301-534-2XXX 2000–2999Assigned YMAX COMMUNICATIONS CORP. - MD 281E INDIANHEAD MD
2006-11-21 301-534-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - MD 281E INDIANHEAD MD
2006-11-21 301-534-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - MD 281E INDIANHEAD MD
2006-11-21 301-534-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - MD 281E INDIANHEAD MD
2006-11-21 301-534-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - MD 281E INDIANHEAD MD
2006-11-21 301-534-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - MD 281E INDIANHEAD MD
2006-11-21 301-534-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - MD 281E INDIANHEAD MD
2006-11-21 301-534-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - MD 281E INDIANHEAD MD
2006-11-17 301-339-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2006-11-17 301-392-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J LA PLATA MD
2006-11-15 301-328-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSHNGTNZN3 MD
2006-11-09 301-825-7XXX 7000–7999Assigned VERIZON MARYLAND, INC. 9212 WSNGTNZN10 MD
2006-11-06 301-684-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 INDIANHEAD MD
2006-11-06 301-885-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WALDORF MD
2006-11-03 301-392-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J LA PLATA MD
2006-10-17 301-339-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2006-10-17 301-357-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN3 MD
2006-10-05 301-885-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WALDORF MD
2006-10-05 301-885-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WALDORF MD
2006-09-15 301-861-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WALDORF MD
2006-09-12 301-288-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN12 MD
2006-09-12 301-326-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN3 MD
2006-09-12 301-326-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J 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.