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
2004-01-13 301-768-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2004-01-13 301-768-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2004-01-08 301-418-3XXX 3000–3999Assigned METROPCS, INC. 5562 FREDERICK MD
2004-01-08 301-418-4XXX 4000–4999Assigned METROPCS, INC. 5562 FREDERICK MD
2004-01-08 301-812-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J WSNG238Z15 MD
2004-01-05 301-876-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F CUMBERLAND MD
2003-12-18 301-769-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEONARDTN MD
2003-12-18 301-769-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEONARDTN MD
2003-12-16 301-768-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2003-12-05 301-366-7XXX 7000–7999Assigned METROPCS, INC. 5562 GAITHERSBG MD
2003-12-05 301-366-8XXX 8000–8999Assigned METROPCS, INC. 5562 GAITHERSBG MD
2003-12-03 301-768-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2003-10-23 301-278-0XXX 0000–0999Assigned QUANTUM TELECOMMUNICATIONS, INC. - MD 2596 WSHNGTNZN5 MD
2003-10-23 301-685-8XXX 8000–8999Assigned QUANTUM TELECOMMUNICATIONS, INC. - MD 2596 DAMASCS236 MD
2003-10-23 301-769-0XXX 0000–0999Assigned QUANTUM TELECOMMUNICATIONS, INC. - MD 2596 LEONARDTN MD
2003-10-23 301-803-5XXX 5000–5999Assigned QUANTUM TELECOMMUNICATIONS, INC. - MD 2596 WSHNGTNZN2 MD
2003-10-23 301-885-4XXX 4000–4999Assigned QUANTUM TELECOMMUNICATIONS, INC. - MD 2596 WALDORF MD
2003-10-23 301-994-5XXX 5000–5999Assigned QUANTUM TELECOMMUNICATIONS, INC. - MD 2596 LXTNPKGRML MD
2003-10-16 301-525-0XXX 0000–0999Assigned QUANTUM TELECOMMUNICATIONS, INC. - MD 2596 GAITHERSBG MD
2003-10-15 301-994-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 LXTNPKGRML MD
2003-10-13 301-398-0XXX 0000–0999Assigned VERIZON MARYLAND, INC. 9212 WSNGTNZN10 MD
2003-10-13 301-398-1XXX 1000–1999Assigned VERIZON MARYLAND, INC. 9212 WSNGTNZN10 MD
2003-10-13 301-398-2XXX 2000–2999Assigned VERIZON MARYLAND, INC. 9212 WSNGTNZN10 MD
2003-10-13 301-398-3XXX 3000–3999Assigned VERIZON MARYLAND, INC. 9212 WSNGTNZN10 MD
2003-10-13 301-398-4XXX 4000–4999Assigned VERIZON MARYLAND, INC. 9212 WSNGTNZN10 MD
2003-10-13 301-398-5XXX 5000–5999Assigned VERIZON MARYLAND, INC. 9212 WSNGTNZN10 MD
2003-10-13 301-398-6XXX 6000–6999Assigned VERIZON MARYLAND, INC. 9212 WSNGTNZN10 MD
2003-10-13 301-398-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D WSNGTNZN10 MD
2003-10-13 301-398-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D WSNGTNZN10 MD
2003-10-13 301-398-9XXX 9000–9999Assigned ONVOY, LLC - MD 876D WSNGTNZN10 MD
2003-09-17 301-366-3XXX 3000–3999Assigned METROPCS, INC. 5562 GAITHERSBG MD
2003-09-17 301-366-4XXX 4000–4999Assigned METROPCS, INC. 5562 GAITHERSBG MD
2003-09-17 301-418-0XXX 0000–0999Assigned METROPCS, INC. 5562 FREDERICK MD
2003-09-17 301-418-1XXX 1000–1999Assigned METROPCS, INC. 5562 FREDERICK MD
2003-09-17 301-418-2XXX 2000–2999Assigned METROPCS, INC. 5562 FREDERICK MD
2003-09-09 301-755-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2003-08-25 301-755-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2003-08-25 301-905-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2003-08-25 301-905-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2003-07-29 301-273-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2003-07-09 301-204-8XXX 8000–8999Assigned VERIZON MARYLAND, INC. 9212 WSHNGTNZN2 MD
2003-07-09 301-592-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2003-07-09 301-755-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2003-06-26 301-291-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 WSNG236Z14 MD
2003-06-17 301-905-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2003-05-20 301-408-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2003-05-14 301-905-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN3 MD
2003-05-08 301-833-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 WSNG236Z14 MD
2003-05-08 301-833-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 WSNG236Z14 MD
2003-05-08 301-833-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 WSNG236Z14 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.