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
2006-12-13 240-367-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 FREDERICK MD
2006-12-05 240-595-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN3 MD
2006-11-30 240-308-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DAMASCS236 MD
2006-11-29 240-493-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN6 MD
2006-11-29 240-838-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN5 MD
2006-11-29 240-838-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN5 MD
2006-11-29 240-838-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN5 MD
2006-11-22 240-454-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J GAITHERSBG MD
2006-11-17 240-253-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN6 MD
2006-11-17 240-413-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2006-11-16 240-669-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN11 MD
2006-11-16 240-669-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN11 MD
2006-11-16 240-669-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN11 MD
2006-11-16 240-770-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN4 MD
2006-11-16 240-770-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN4 MD
2006-11-16 240-770-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN4 MD
2006-11-15 240-912-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J GAITHERSBG MD
2006-11-15 240-912-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J GAITHERSBG MD
2006-11-15 240-912-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J GAITHERSBG MD
2006-11-15 240-912-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J GAITHERSBG MD
2006-11-15 240-912-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J GAITHERSBG MD
2006-11-15 240-965-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WSNG236Z13 MD
2006-11-15 240-965-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WSNG236Z13 MD
2006-11-14 240-786-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LAUREL236 MD
2006-11-14 240-786-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J LAUREL236 MD
2006-11-14 240-786-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J LAUREL236 MD
2006-11-10 240-577-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J LEONARDTN MD
2006-11-09 240-308-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 DAMASCS236 MD
2006-11-09 240-543-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2006-11-09 240-595-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN3 MD
2006-11-06 240-577-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LEONARDTN MD
2006-10-30 240-751-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GAITHERSBG MD
2006-10-30 240-751-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GAITHERSBG MD
2006-10-30 240-751-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GAITHERSBG MD
2006-10-30 240-751-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GAITHERSBG MD
2006-10-30 240-751-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GAITHERSBG MD
2006-10-26 240-346-0XXX 0000–0999Assigned METROPCS, INC. 5562 WALDORF MD
2006-10-26 240-346-2XXX 2000–2999Assigned METROPCS, INC. 5562 WALDORF MD
2006-10-25 240-520-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HAGERSTOWN MD
2006-10-25 240-520-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HAGERSTOWN MD
2006-10-17 240-543-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2006-10-16 240-377-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 INDIANHEAD MD
2006-10-16 240-855-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2006-10-16 240-855-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2006-10-16 240-855-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2006-10-16 240-855-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2006-10-16 240-993-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 INDIANHEAD MD
2006-10-10 240-681-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 BRANDYWINE MD
2006-10-05 240-688-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN3 MD
2006-10-05 240-723-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 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.