NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

5 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 937
PEERLESS NETWORK OF OHIO, LLC - OH 2
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
TELNYX LLC 1
AHOI LLC 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
2005-08-19 937-242-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J DAYTON OH
2005-08-19 937-242-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J DAYTON OH
2005-08-09 937-707-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MARYSVILLE OH
2005-08-02 937-306-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C BEAVERCREK OH
2005-07-27 937-460-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C SPRINGFLD OH
2005-07-25 937-483-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 GEORGETOWN OH
2005-07-22 937-245-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2005-07-22 937-245-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2005-07-22 937-245-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2005-07-22 937-528-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2005-07-22 937-914-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 MSBGWCRLTN OH
2005-07-22 937-914-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 MSBGWCRLTN OH
2005-07-22 937-914-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 MSBGWCRLTN OH
2005-07-07 937-626-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2005-07-06 937-733-9XXX 9000–9999Assigned METROPCS, INC. 5562 EATON OH
2005-05-26 937-360-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 SPRINGFLD OH
2005-05-26 937-573-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TROY OH
2005-05-25 937-336-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EATON OH
2005-05-25 937-401-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2005-05-25 937-401-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2005-05-24 937-424-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J DAYTON OH
2005-05-23 937-472-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EATON OH
2005-05-10 937-352-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 XENIA OH
2005-05-10 937-521-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD OH
2005-05-10 937-688-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 SPRINGFLD OH
2005-05-05 937-552-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TROY OH
2005-04-29 937-660-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DAYTON OH
2005-04-29 937-660-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DAYTON OH
2005-04-29 937-660-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DAYTON OH
2005-04-20 937-529-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 TROTWOOD OH
2005-04-18 937-556-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WILMINGTON OH
2005-04-18 937-556-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WILMINGTON OH
2005-04-01 937-306-1XXX 1000–1999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B BEAVERCREK OH
2005-04-01 937-514-7XXX 7000–7999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B FRANKLIN OH
2005-03-31 937-458-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 BEAVERCREK OH
2005-03-31 937-458-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 BEAVERCREK OH
2005-03-24 937-723-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2005-03-15 937-265-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 PITCHIN OH
2005-03-15 937-310-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 BELLBROOK OH
2005-03-15 937-314-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DONNELSVL OH
2005-03-15 937-315-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MEDWAY OH
2005-03-15 937-317-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 SPRING VLY OH
2005-03-15 937-319-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 YLSPGCLFTN OH
2005-03-15 937-403-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HILLSBORO OH
2005-03-15 937-403-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HILLSBORO OH
2005-03-15 937-403-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HILLSBORO OH
2005-03-15 937-410-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 VANDALIA OH
2005-03-15 937-453-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 BOWERSVLLE OH
2005-03-15 937-486-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 PT WILLIAM OH
2005-03-15 937-488-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NEWBRLNGTN OH

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.