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
2013-02-01 937-712-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 MOUNT ORAB OH
2013-01-04 937-204-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2013-01-04 937-204-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DAYTON OH
2013-01-04 937-402-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K HILLSBORO OH
2013-01-04 937-670-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GREENVILLE OH
2013-01-04 937-703-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K TROY OH
2012-12-19 937-708-7XXX 7000–7999Assigned ONVOY, LLC - OH 464C XENIA OH
2012-12-18 937-364-5XXX 5000–5999Assigned HORIZON SERVICES, INC. - OH 601G LYNCHBURG OH
2012-12-18 937-780-0XXX 0000–0999Assigned HORIZON SERVICES, INC. - OH 601G LEESBURG OH
2012-12-13 937-803-1XXX 1000–1999Assigned HORIZON SERVICES, INC. - OH 601G GREENFIELD OH
2012-11-30 937-802-1XXX 1000–1999Assigned NUSO, LLC 551G DAYTON OH
2012-11-23 937-896-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 URBANA OH
2012-11-15 937-204-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DAYTON OH
2012-11-12 937-377-9XXX 9000–9999Assigned HORIZON SERVICES, INC. - OH 601G RUSSELLVL OH
2012-11-08 937-712-1XXX 1000–1999Assigned HORIZON SERVICES, INC. - OH 601G MOUNT ORAB OH
2012-11-02 937-481-9XXX 9000–9999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F WILMINGTON OH
2012-11-02 937-506-1XXX 1000–1999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F TIPP CITY OH
2012-11-02 937-540-3XXX 3000–3999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F ENGLEWOOD OH
2012-11-02 937-715-3XXX 3000–3999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F TROTWOOD OH
2012-11-01 937-373-5XXX 5000–5999Assigned HORIZON SERVICES, INC. - OH 601G DECATUR OH
2012-11-01 937-375-8XXX 8000–8999Assigned HORIZON SERVICES, INC. - OH 601G HIGGINSPT OH
2012-11-01 937-379-3XXX 3000–3999Assigned HORIZON SERVICES, INC. - OH 601G HAMERSVL OH
2012-11-01 937-543-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J NEWCARLISL OH
2012-11-01 937-752-1XXX 1000–1999Assigned HORIZON SERVICES, INC. - OH 601G SEAMAN OH
2012-11-01 937-798-2XXX 2000–2999Assigned HORIZON SERVICES, INC. - OH 601G PEEBLES OH
2012-11-01 937-892-1XXX 1000–1999Assigned HORIZON SERVICES, INC. - OH 601G WEST UNION OH
2012-10-30 937-366-8XXX 8000–8999Assigned METROPCS, INC. 5562 WILMINGTON OH
2012-10-19 937-624-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD OH
2012-10-19 937-706-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SOCHARLETN OH
2012-10-19 937-801-1XXX 1000–1999Assigned HORIZON SERVICES, INC. - OH 601G GEORGETOWN OH
2012-10-05 937-419-8XXX 8000–8999Assigned GOLDSTAR COMMUNICATIONS, LLC - OH 9133 SIDNEY OH
2012-10-02 937-624-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 SPRINGFLD OH
2012-09-28 937-368-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C FLTCHELENA OH
2012-09-26 937-503-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2012-09-26 937-503-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2012-09-26 937-617-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F RIDGEWAY OH
2012-09-26 937-701-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2012-09-26 937-853-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2012-09-19 937-265-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C PITCHIN OH
2012-09-19 937-314-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C DONNELSVL OH
2012-09-19 937-315-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C MEDWAY OH
2012-09-19 937-319-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C YLSPGCLFTN OH
2012-09-19 937-340-7XXX 7000–7999Assigned ONVOY, LLC - OH 464C ENON OH
2012-09-19 937-403-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C HILLSBORO OH
2012-09-19 937-453-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C BOWERSVLLE OH
2012-09-19 937-462-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C SOCHARLETN OH
2012-09-19 937-543-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C NEWCARLISL OH
2012-09-19 937-550-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C FRANKLIN OH
2012-09-19 937-568-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C SO VIENNA OH
2012-09-19 937-697-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C CEDARVILLE 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.