NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

5 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2014-01-22 240-803-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MD 7325 CUMBERLAND MD
2014-01-21 240-766-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN6 MD
2014-01-15 240-903-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J INDIANHEAD MD
2014-01-13 240-544-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNG236Z14 MD
2014-01-13 240-837-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HUGHESVL MD
2014-01-07 240-204-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN2 MD
2014-01-07 240-204-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN2 MD
2014-01-07 240-551-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSNGTNZN10 MD
2014-01-07 240-578-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 FREDERICK MD
2013-12-24 240-803-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 CUMBERLAND MD
2013-12-17 240-578-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J FREDERICK MD
2013-12-11 240-467-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN4 MD
2013-12-04 240-903-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J INDIANHEAD MD
2013-11-27 240-614-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2013-11-27 240-766-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN6 MD
2013-11-27 240-766-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN6 MD
2013-11-25 240-513-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 7228 HAGERSTOWN MD
2013-11-19 240-630-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF MARYLAND, LLC - MD 7591 WSHNGTNZN2 MD
2013-11-15 240-716-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN5 MD
2013-11-15 240-716-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN5 MD
2013-11-12 240-467-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2013-11-12 240-467-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2013-11-12 240-608-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 FREDERICK MD
2013-11-12 240-608-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 FREDERICK MD
2013-11-12 240-614-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN10 MD
2013-11-12 240-699-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J BUCKEYSTN MD
2013-11-08 240-532-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN5 MD
2013-11-08 240-532-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN5 MD
2013-11-07 240-532-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN5 MD
2013-10-30 240-495-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN4 MD
2013-10-30 240-532-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN5 MD
2013-10-29 240-341-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BUCKEYSTN MD
2013-10-28 240-309-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LEONARDTN MD
2013-10-28 240-587-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LEONARDTN MD
2013-10-25 240-614-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSNGTNZN10 MD
2013-10-24 240-513-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 HAGERSTOWN MD
2013-10-15 240-334-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WSNG236Z14 MD
2013-10-09 240-801-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 GAITHERSBG MD
2013-10-02 240-530-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WALDORF MD
2013-10-02 240-652-7XXX 7000–7999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G MECHANCSVL MD
2013-10-02 240-986-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G NANJEMOY MD
2013-10-01 240-772-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 FREDERICK MD
2013-09-20 240-839-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WSHNGTNZN3 MD
2013-09-19 240-360-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LAUREL236 MD
2013-09-19 240-360-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LAUREL236 MD
2013-09-12 240-614-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2013-09-12 240-614-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2013-09-12 240-615-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2013-09-12 240-615-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2013-09-12 240-722-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.