NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 410
ONVOY, LLC - MD 2
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
2006-04-07 410-202-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 SALISBURY MD
2006-04-07 410-202-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 SALISBURY MD
2006-04-07 410-429-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WORTHINGTN MD
2006-04-05 410-304-2XXX 2000–2999Assigned IDT AMERICA, CORP. - MD 228C QUEENSTOWN MD
2006-04-05 410-517-9XXX 9000–9999Assigned METROPCS, INC. 5562 REISTERSTN MD
2006-03-14 410-202-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 7228 SALISBURY MD
2006-03-14 410-698-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 FORK MD
2006-03-14 410-970-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 SYKESVILLE MD
2006-03-13 410-782-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 ELKRIDGE MD
2006-03-07 410-497-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J PARKVILLE MD
2006-03-07 410-697-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J MILLERSVL MD
2006-02-24 410-609-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 BRYNPKLNCM MD
2006-02-23 410-774-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 CROFTON MD
2006-02-23 410-774-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 CROFTON MD
2006-02-23 410-907-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J WOODLAWN MD
2006-02-22 410-504-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PIKESVILLE MD
2006-02-14 410-867-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 7228 WEST RIVER MD
2006-02-08 410-343-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 SPARKSGLNC MD
2006-02-08 410-346-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 SILVER RUN MD
2006-02-08 410-394-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 SOLOMONS MD
2006-02-08 410-709-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 SPARROWSPT MD
2006-02-08 410-775-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 UNION BDG MD
2006-02-08 410-881-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 SHERWD FOR MD
2006-02-06 410-457-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 DARLINGTON MD
2006-02-06 410-734-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 CHURCHVL MD
2006-02-06 410-877-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 FALLSTON MD
2006-02-06 410-942-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 HAVREGRACE MD
2006-01-23 410-858-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ANNAPOLIS MD
2006-01-19 410-343-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J SPARKSGLNC MD
2006-01-12 410-779-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2006-01-06 410-202-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 SALISBURY MD
2006-01-06 410-710-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2006-01-06 410-710-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2006-01-06 410-814-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2006-01-06 410-814-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2006-01-06 410-858-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ANNAPOLIS MD
2006-01-06 410-858-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ANNAPOLIS MD
2006-01-05 410-349-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 ANNAPOLIS MD
2006-01-03 410-690-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 EASTON MD
2005-12-27 410-710-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2005-12-14 410-369-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2005-12-14 410-369-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2005-12-13 410-697-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MILLERSVL MD
2005-12-13 410-697-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MILLERSVL MD
2005-12-09 410-814-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J BALTIMORE MD
2005-12-08 410-710-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2005-12-08 410-710-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2005-12-08 410-710-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2005-12-08 410-710-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2005-12-08 410-710-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE 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.