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 330
ONVOY, LLC - OH 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
2005-04-15 330-282-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CORTLAND OH
2005-04-15 330-557-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 LAKEMILTON OH
2005-04-15 330-584-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 NO BENTON OH
2005-04-15 330-889-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 BRISTOLVL OH
2005-04-13 330-646-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WARREN OH
2005-04-13 330-646-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WARREN OH
2005-04-13 330-646-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WARREN OH
2005-04-13 330-777-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 AKRON OH
2005-04-11 330-359-8XXX 8000–8999Assigned SUPER-NET, INC. - OH 155F WILMOT OH
2005-04-08 330-281-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 RAVENNA OH
2005-04-07 330-277-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SALEM OH
2005-04-07 330-299-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NILES OH
2005-04-01 330-439-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WOOSTER OH
2005-03-31 330-238-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ALLIANCE OH
2005-03-28 330-532-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WELLSVILLE OH
2005-03-23 330-917-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 MARLBORO OH
2005-03-23 330-980-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 WARREN OH
2005-03-21 330-209-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CANTON OH
2005-03-21 330-962-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AKRON OH
2005-03-21 330-984-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WARREN OH
2005-03-04 330-267-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 HARTVILLE OH
2005-03-04 330-267-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 HARTVILLE OH
2005-03-02 330-227-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ROGERS OH
2005-03-02 330-269-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 HUBBARD OH
2005-03-02 330-286-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CANFIELD OH
2005-03-02 330-457-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NEWWATERFD OH
2005-03-02 330-536-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LOWELLVL OH
2005-03-02 330-538-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NO JACKSON OH
2005-03-02 330-887-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WESTFLDCTR OH
2005-03-02 330-921-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBIANA OH
2005-03-02 330-964-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LISBON OH
2005-02-21 330-268-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CANTON OH
2005-02-21 330-962-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 AKRON OH
2005-02-21 330-984-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WARREN OH
2005-02-18 330-581-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALLIANCE OH
2005-02-18 330-708-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ELIVERPOOL OH
2005-02-18 330-931-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 KENT OH
2005-02-16 330-473-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MILLERSBG OH
2005-02-16 330-485-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 RITTMAN OH
2005-02-07 330-752-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 AKRON OH
2005-02-07 330-752-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 AKRON OH
2005-02-07 330-984-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WARREN OH
2005-01-27 330-754-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CANTON OH
2005-01-27 330-754-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CANTON OH
2005-01-24 330-423-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 YOUNGSTOWN OH
2005-01-24 330-577-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 RAVENNA OH
2005-01-24 330-754-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CANTON OH
2005-01-24 330-984-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WARREN OH
2005-01-20 330-338-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 AKRON OH
2005-01-20 330-347-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WOOSTER 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.