NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

8 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 3
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
2016-10-19 920-283-9XXX 9000–9999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F GREEN BAY WI
2016-09-30 920-335-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 SHEBOGNFLS WI
2016-09-22 920-309-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 DE PERE WI
2016-09-22 920-573-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 OSHKOSH WI
2016-09-08 920-375-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FONDDU LAC WI
2016-09-08 920-375-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FONDDU LAC WI
2016-09-08 920-479-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OSHKOSH WI
2016-09-08 920-509-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OSHKOSH WI
2016-08-31 920-301-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 GREEN BAY WI
2016-08-23 920-280-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F LTL CHUTE WI
2016-08-17 920-301-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GREEN BAY WI
2016-08-17 920-301-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GREEN BAY WI
2016-08-17 920-301-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GREEN BAY WI
2016-08-17 920-312-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OSHKOSH WI
2016-08-17 920-570-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 APPLETON WI
2016-08-12 920-301-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 GREEN BAY WI
2016-08-11 920-572-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 APPLETON WI
2016-08-11 920-572-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 APPLETON WI
2016-08-11 920-572-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 APPLETON WI
2016-07-27 920-355-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MAPLETON WI
2016-07-26 920-583-9XXX 9000–9999Assigned UNITED STATES CELLULAR - WI 6274 OAKFIELD WI
2016-07-25 920-333-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F STURGEONBY WI
2016-07-25 920-479-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F OSHKOSH WI
2016-07-25 920-581-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F FONDDU LAC WI
2016-07-25 920-581-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F FONDDU LAC WI
2016-07-25 920-666-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F APPLETON WI
2016-07-25 920-949-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F KAUKAUNA WI
2016-07-22 920-425-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K DE PERE WI
2016-07-13 920-312-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 OSHKOSH WI
2016-07-07 920-861-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 WINNECONNE WI
2016-07-05 920-257-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 APPLETON WI
2016-07-05 920-570-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 APPLETON WI
2016-07-05 920-840-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 APPLETON WI
2016-07-05 920-939-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 APPLETON WI
2016-06-29 920-356-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BEAVER DAM WI
2016-06-28 920-325-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F WAUPUN WI
2016-06-24 920-301-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K GREEN BAY WI
2016-06-22 920-306-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F BEAVER DAM WI
2016-06-22 920-335-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F SHEBOGNFLS WI
2016-06-17 920-250-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F NEW LONDON WI
2016-06-15 920-214-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MAYVILLE WI
2016-06-15 920-241-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F DE PERE WI
2016-06-15 920-301-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 GREEN BAY WI
2016-06-15 920-301-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 GREEN BAY WI
2016-06-15 920-383-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F NEENAH WI
2016-06-15 920-666-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F APPLETON WI
2016-06-09 920-905-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANITOWOC WI
2016-06-09 920-905-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANITOWOC WI
2016-05-27 920-794-9XXX 9000–9999Assigned UNITED STATES CELLULAR - WI 6274 TWO RIVERS WI
2016-05-26 920-600-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREEN BAY 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.