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 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
2009-07-16 937-858-3XXX 3000–3999Assigned TSC COMMUNICATIONS, INC. - OH 0640 BOTKINS OH
2009-07-10 937-419-5XXX 5000–5999Assigned TSC COMMUNICATIONS, INC. - OH 0640 SIDNEY OH
2009-07-10 937-421-9XXX 9000–9999Assigned TSC COMMUNICATIONS, INC. - OH 0640 JACKSONCTR OH
2009-07-10 937-639-9XXX 9000–9999Assigned TSC COMMUNICATIONS, INC. - OH 0640 ANNA OH
2009-07-02 937-444-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 MOUNT ORAB OH
2009-06-29 937-329-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAYTON OH
2009-06-29 937-329-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAYTON OH
2009-06-29 937-329-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAYTON OH
2009-06-29 937-329-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAYTON OH
2009-06-29 937-329-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAYTON OH
2009-06-29 937-608-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2009-06-29 937-608-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2009-06-29 937-608-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2009-06-01 937-283-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 WILMINGTON OH
2009-05-20 937-329-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2009-05-20 937-329-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2009-05-15 937-734-1XXX 1000–1999Assigned OHIO BELL TEL CO 9321 DAYTON OH
2009-05-15 937-734-2XXX 2000–2999Assigned OHIO BELL TEL CO 9321 DAYTON OH
2009-05-15 937-734-3XXX 3000–3999Assigned OHIO BELL TEL CO 9321 DAYTON OH
2009-05-15 937-734-4XXX 4000–4999Assigned OHIO BELL TEL CO 9321 DAYTON OH
2009-05-15 937-734-5XXX 5000–5999Assigned OHIO BELL TEL CO 9321 DAYTON OH
2009-05-15 937-734-6XXX 6000–6999Assigned OHIO BELL TEL CO 9321 DAYTON OH
2009-05-15 937-734-7XXX 7000–7999Assigned OHIO BELL TEL CO 9321 DAYTON OH
2009-05-15 937-734-8XXX 8000–8999Assigned OHIO BELL TEL CO 9321 DAYTON OH
2009-05-15 937-734-9XXX 9000–9999Assigned OHIO BELL TEL CO 9321 DAYTON OH
2009-05-08 937-844-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BELLEFNTAN OH
2009-05-07 937-827-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K VERSAILLES OH
2009-04-28 937-661-1XXX 1000–1999Assigned METROPCS, INC. 5562 HILLSBORO OH
2009-04-20 937-571-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WILMINGTON OH
2009-03-20 937-476-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 DAYTON OH
2009-03-20 937-738-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K MARYSVILLE OH
2009-03-16 937-524-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TROY OH
2009-03-13 937-867-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2009-03-11 937-985-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K DAYTON OH
2009-03-06 937-670-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GREENVILLE OH
2009-03-02 937-831-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD OH
2009-03-02 937-831-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD OH
2009-02-20 937-732-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAYTON OH
2009-02-20 937-732-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAYTON OH
2009-02-20 937-732-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAYTON OH
2009-02-20 937-732-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAYTON OH
2009-02-20 937-916-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K PIQUA OH
2009-02-17 937-732-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C DAYTON OH
2009-02-17 937-732-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C DAYTON OH
2009-02-17 937-944-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WILMINGTON OH
2009-02-17 937-985-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C DAYTON OH
2009-02-06 937-661-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HILLSBORO OH
2009-01-29 937-365-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K RAINSBORO OH
2009-01-27 937-734-0XXX 0000–0999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B DAYTON OH
2009-01-16 937-350-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CENTERVLLE OH

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.