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
2011-07-05 240-437-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2011-07-05 240-437-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2011-07-05 240-437-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2011-07-05 240-794-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F LXTNPKGRML MD
2011-06-29 240-585-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WALDORF MD
2011-06-27 240-457-8XXX 8000–8999Assigned METROPCS, INC. 5562 FREDERICK MD
2011-06-24 240-459-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL236 MD
2011-06-24 240-583-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2011-06-15 240-385-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 MYERSVILLE MD
2011-06-15 240-416-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WALDORF MD
2011-06-15 240-457-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 FREDERICK MD
2011-06-15 240-695-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN5 MD
2011-06-13 240-500-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J HAGERSTOWN MD
2011-06-08 240-284-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F FROSTBURG MD
2011-06-08 240-457-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J FREDERICK MD
2011-06-07 240-422-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F FREDERICK MD
2011-06-07 240-435-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WALDORF MD
2011-06-07 240-437-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F ASHTON236 MD
2011-06-07 240-437-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F ASHTON236 MD
2011-06-07 240-459-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F LAUREL236 MD
2011-06-07 240-979-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F CUMBERLAND MD
2011-05-27 240-459-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J LAUREL236 MD
2011-05-24 240-459-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL236 MD
2011-05-13 240-343-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 HANCOCK MD
2011-05-13 240-442-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 OAKLAND MD
2011-05-12 240-392-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN5 MD
2011-05-04 240-459-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL236 MD
2011-05-03 240-415-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F FREDERICK MD
2011-05-03 240-415-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F FREDERICK MD
2011-05-03 240-452-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F HAGERSTOWN MD
2011-05-03 240-452-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F HAGERSTOWN MD
2011-05-03 240-979-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F CUMBERLAND MD
2011-04-29 240-600-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-04-29 240-600-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-04-29 240-600-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-04-29 240-600-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-04-29 240-600-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-04-29 240-600-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-04-29 240-600-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-04-29 240-600-9XXX 9000–9999Assigned METROPCS, INC. 5562 WSHNGTNZN2 MD
2011-04-22 240-286-0XXX 0000–0999Assigned METROPCS, INC. 5562 WSHNGTNZN2 MD
2011-04-22 240-300-4XXX 4000–4999Assigned METROPCS, INC. 5562 WALDORF MD
2011-04-22 240-300-5XXX 5000–5999Assigned METROPCS, INC. 5562 WALDORF MD
2011-04-22 240-300-6XXX 6000–6999Assigned METROPCS, INC. 5562 WALDORF MD
2011-04-22 240-300-7XXX 7000–7999Assigned METROPCS, INC. 5562 WALDORF MD
2011-04-22 240-300-8XXX 8000–8999Assigned METROPCS, INC. 5562 WALDORF MD
2011-04-22 240-300-9XXX 9000–9999Assigned METROPCS, INC. 5562 WALDORF MD
2011-04-22 240-431-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LXTNPKGRML MD
2011-04-21 240-837-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HUGHESVL MD
2011-04-20 240-232-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSNG236Z14 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.