NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

2 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 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2006-01-10 330-553-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 WARREN OH
2006-01-10 330-553-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WARREN OH
2006-01-10 330-553-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WARREN OH
2006-01-10 330-706-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AKRON OH
2006-01-05 330-331-1XXX 1000–1999Assigned FRONTIER NORTH, INC. - OH 0615 WADSWORTH OH
2006-01-04 330-749-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 WOOSTER OH
2006-01-04 330-998-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 TWINSBURG OH
2006-01-03 330-234-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WOOSTER OH
2006-01-03 330-354-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HARTVILLE OH
2005-12-28 330-546-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CANTON OH
2005-12-15 330-447-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 NEWPHLDLPH OH
2005-12-14 330-303-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELIVERPOOL OH
2005-12-08 330-280-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CANTON OH
2005-12-08 330-280-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CANTON OH
2005-12-07 330-331-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WADSWORTH OH
2005-12-07 330-863-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MALVERN OH
2005-12-07 330-935-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MARLBORO OH
2005-12-06 330-245-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AKRON OH
2005-12-05 330-483-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 VALLEYCITY OH
2005-11-30 330-261-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 YOUNGSTOWN OH
2005-11-30 330-634-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AKRON OH
2005-11-30 330-984-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WARREN OH
2005-11-16 330-529-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MANCHESTR OH
2005-11-16 330-769-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 SEVILLE OH
2005-11-10 330-595-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 UNIONTOWN OH
2005-11-09 330-357-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MANTUA OH
2005-11-09 330-594-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MOGADORE OH
2005-11-09 330-597-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ATWATER OH
2005-11-09 330-667-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CHATHAM OH
2005-11-09 330-694-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MAGNOLWSBG OH
2005-11-09 330-791-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NAVARRE OH
2005-11-09 330-899-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 GREENSBURG OH
2005-11-07 330-771-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MINERVA OH
2005-11-04 330-445-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CANTON OH
2005-11-03 330-706-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AKRON OH
2005-11-02 330-330-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 YOUNGSTOWN OH
2005-11-02 330-330-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 YOUNGSTOWN OH
2005-11-02 330-330-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 YOUNGSTOWN OH
2005-11-02 330-330-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 YOUNGSTOWN OH
2005-11-02 330-330-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 YOUNGSTOWN OH
2005-11-01 330-224-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CANTON OH
2005-11-01 330-224-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CANTON OH
2005-11-01 330-232-7XXX 7000–7999Assigned ONVOY, LLC - OH 464C CANTON OH
2005-11-01 330-232-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CANTON OH
2005-11-01 330-232-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CANTON OH
2005-11-01 330-445-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CANTON OH
2005-11-01 330-445-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CANTON OH
2005-11-01 330-528-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NORTHFIELD OH
2005-10-27 330-777-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 AKRON OH
2005-10-27 330-777-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 AKRON 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.