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
2014-01-10 920-312-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F OSHKOSH WI
2014-01-10 920-395-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F SHEBOYGAN WI
2013-12-18 920-602-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FONDDU LAC WI
2013-11-22 920-561-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F WATERLOO WI
2013-11-22 920-657-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TWO RIVERS WI
2013-11-13 920-866-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K NEWFRANKEN WI
2013-11-12 920-221-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 APPLETON WI
2013-11-06 920-663-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MANITOWOC WI
2013-11-05 920-241-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 DE PERE WI
2013-10-22 920-944-7XXX 7000–7999Assigned METROPCS, INC. 5562 APPLETON WI
2013-10-18 920-390-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WATERTOWN WI
2013-10-09 920-634-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C GREEN BAY WI
2013-10-08 920-333-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F STURGEONBY WI
2013-10-04 920-538-6XXX 6000–6999Assigned UNITED STATES CELLULAR - WI 6274 NEW LONDON WI
2013-10-03 920-350-7XXX 7000–7999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F COLUMBUS WI
2013-10-02 920-347-6XXX 6000–6999Assigned TDS METROCOM, LLC 520K DE PERE WI
2013-09-18 920-461-4XXX 4000–4999Assigned METROPCS, INC. 5562 GREEN BAY WI
2013-09-18 920-461-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GREEN BAY WI
2013-09-18 920-461-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GREEN BAY WI
2013-09-13 920-461-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 GREEN BAY WI
2013-09-12 920-940-6XXX 6000–6999Assigned TDS METROCOM, LLC 520K GREEN BAY WI
2013-09-09 920-597-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 BRANDON WI
2013-09-06 920-843-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 APPLETON WI
2013-08-28 920-313-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LOMIRA WI
2013-08-28 920-313-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LOMIRA WI
2013-08-28 920-354-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 BERLIN WI
2013-08-28 920-542-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FTATKINSON WI
2013-08-15 920-545-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F WATERTOWN WI
2013-08-14 920-240-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUTOMA WI
2013-08-14 920-260-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MARKESAN WI
2013-08-14 920-354-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 BERLIN WI
2013-08-14 920-472-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 NEW LONDON WI
2013-08-14 920-505-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WEYAUWEGA WI
2013-08-14 920-807-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 GREEN LAKE WI
2013-08-09 920-206-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WATERTOWN WI
2013-08-09 920-226-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 SHEBOYGAN WI
2013-08-07 920-241-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 DE PERE WI
2013-07-31 920-221-4XXX 4000–4999Assigned WISCONSIN BELL INC 9327 APPLETON WI
2013-07-26 920-299-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 GREEN LAKE WI
2013-07-11 920-463-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K RANDOLPH WI
2013-06-27 920-797-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 KIEL WI
2013-06-21 920-461-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F GREEN BAY WI
2013-05-28 920-300-1XXX 1000–1999Assigned EASTCOAST TELECOM, INC. 0914 CLEVELAND WI
2013-05-24 920-944-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F APPLETON WI
2013-05-24 920-944-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F APPLETON WI
2013-05-22 920-747-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF WISCONSIN, LP - WI 7322 JEFFERSON WI
2013-05-21 920-791-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BEAVER DAM WI
2013-05-06 920-672-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LENA WI
2013-05-01 920-316-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 OOSTBURG WI
2013-04-18 920-472-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 NEW LONDON 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.