NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 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 920
ONVOY, LLC - WI 4
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 2
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
T-MOBILE USA, INC. 1
INTRADO COMMUNICATIONS, 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
2011-05-20 920-543-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C BURNETT WI
2011-05-20 920-643-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C HORICON WI
2011-05-18 920-214-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MAYVILLE WI
2011-05-18 920-239-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F WAUPUN WI
2011-05-18 920-343-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F DE PERE WI
2011-05-18 920-349-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F HUSTISFORD WI
2011-05-18 920-385-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F OSHKOSH WI
2011-05-18 920-393-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F GREEN BAY WI
2011-05-18 920-393-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F GREEN BAY WI
2011-05-18 920-393-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F GREEN BAY WI
2011-05-18 920-393-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F GREEN BAY WI
2011-05-18 920-663-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MANITOWOC WI
2011-05-18 920-931-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F APPLETON WI
2011-05-18 920-931-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F APPLETON WI
2011-05-18 920-944-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F APPLETON WI
2011-05-18 920-944-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F APPLETON WI
2011-05-18 920-944-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F APPLETON WI
2011-05-10 920-791-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BEAVER DAM WI
2011-05-03 920-449-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 PLYMOUTH WI
2011-05-03 920-550-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F SHEBOGNFLS WI
2011-05-03 920-695-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 STURGEONBY WI
2011-04-22 920-370-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 GREEN BAY WI
2011-04-18 920-392-6XXX 6000–6999Assigned UNITED STATES CELLULAR - WI 6274 BEAVER DAM WI
2011-04-11 920-415-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F LTL CHUTE WI
2011-04-08 920-698-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHEBOYGAN WI
2011-04-07 920-530-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREEN BAY WI
2011-04-06 920-393-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K GREEN BAY WI
2011-03-30 920-509-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OSHKOSH WI
2011-03-29 920-917-2XXX 2000–2999Assigned METROPCS, INC. 5562 SHEBOYGAN WI
2011-03-22 920-543-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 BURNETT WI
2011-03-17 920-662-4XXX 4000–4999Assigned ONVOY, LLC - WI 225C GREEN BAY WI
2011-03-08 920-643-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F HORICON WI
2011-03-08 920-798-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F LEBANON WI
2011-03-08 920-931-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 APPLETON WI
2011-03-04 920-634-1XXX 1000–1999Assigned METROPCS, INC. 5562 GREEN BAY WI
2011-03-04 920-634-4XXX 4000–4999Assigned METROPCS, INC. 5562 GREEN BAY WI
2011-02-24 920-492-1XXX 1000–1999Assigned METROPCS, INC. 5562 GREEN BAY WI
2011-02-24 920-492-9XXX 9000–9999Assigned METROPCS, INC. 5562 GREEN BAY WI
2011-02-23 920-352-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C VAN DYNE WI
2011-02-23 920-632-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K DE PERE WI
2011-02-22 920-594-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 LARSEN WI
2011-02-18 920-460-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 APPLETON WI
2011-02-18 920-460-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 APPLETON WI
2011-02-17 920-798-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F LEBANON WI
2011-02-15 920-376-3XXX 3000–3999Assigned METROPCS, INC. 5562 OSHKOSH WI
2011-02-15 920-376-4XXX 4000–4999Assigned METROPCS, INC. 5562 OSHKOSH WI
2011-02-11 920-327-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 GREEN BAY WI
2011-02-04 920-933-7XXX 7000–7999Assigned METROPCS, INC. 5562 FONDDU LAC WI
2011-02-01 920-602-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FONDDU LAC WI
2011-01-31 920-226-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 SHEBOYGAN WI

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.