NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 240
BANDWIDTH.COM CLEC, LLC - MD 3
OPENTACT INC. 1
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
2008-04-02 240-720-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - MD 281E GAITHERSBG MD
2008-04-02 240-750-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 GAITHERSBG MD
2008-04-01 240-345-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - MD 281E ASHTON238 MD
2008-04-01 240-469-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 HAGERSTOWN MD
2008-03-27 240-770-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN4 MD
2008-03-27 240-770-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN4 MD
2008-03-27 240-770-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN4 MD
2008-03-24 240-310-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HAGERSTOWN MD
2008-03-24 240-755-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LAUREL238 MD
2008-03-24 240-898-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2008-03-21 240-522-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CUMBERLAND MD
2008-03-18 240-654-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J GAITHERSBG MD
2008-03-18 240-654-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J GAITHERSBG MD
2008-03-14 240-755-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LAUREL238 MD
2008-03-14 240-898-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2008-03-07 240-575-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J FREDERICK MD
2008-03-06 240-813-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J GAITHERSBG MD
2008-03-06 240-865-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC.- MD 2593 WSNG238Z14 MD
2008-03-05 240-575-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 FREDERICK MD
2008-03-05 240-818-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 MYERSVILLE MD
2008-03-03 240-394-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 MOUNT AIRY MD
2008-02-26 240-522-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CUMBERLAND MD
2008-02-22 240-403-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN10 MD
2008-02-19 240-389-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ASHTON236 MD
2008-02-18 240-766-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSHNGTNZN6 MD
2008-02-15 240-310-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HAGERSTOWN MD
2008-02-14 240-469-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HAGERSTOWN MD
2008-02-14 240-469-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HAGERSTOWN MD
2008-02-11 240-318-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN16 MD
2008-02-08 240-310-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAGERSTOWN MD
2008-02-08 240-310-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAGERSTOWN MD
2008-02-07 240-412-6XXX 6000–6999Assigned METROPCS, INC. 5562 WALDORF MD
2008-02-05 240-206-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSNG236Z14 MD
2008-02-05 240-357-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 FREDERICK MD
2008-02-05 240-405-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 FREDERICK MD
2008-02-05 240-419-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WALDORF MD
2008-02-05 240-560-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSNGTNZN12 MD
2008-02-05 240-565-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL238 MD
2008-02-01 240-258-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 RIDGE MD
2008-02-01 240-289-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSHNGTNZN6 MD
2008-02-01 240-317-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 LXTNPKGRML MD
2008-02-01 240-317-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 LXTNPKGRML MD
2008-02-01 240-493-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSHNGTNZN6 MD
2008-02-01 240-767-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSHNGTNZN5 MD
2008-02-01 240-767-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSHNGTNZN5 MD
2008-02-01 240-770-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSHNGTNZN4 MD
2008-02-01 240-770-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSHNGTNZN4 MD
2008-01-30 240-752-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSHNGTNZN2 MD
2008-01-23 240-560-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSNGTNZN12 MD
2008-01-22 240-442-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 OAKLAND 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.