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
2014-06-05 920-558-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 NEENAH WI
2014-06-05 920-558-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NEENAH WI
2014-06-05 920-558-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NEENAH WI
2014-06-05 920-558-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NEENAH WI
2014-06-05 920-637-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 NEENAH WI
2014-05-21 920-212-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MAYVILLE WI
2014-05-21 920-234-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F SHEBOGNFLS WI
2014-05-21 920-249-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F NEW LONDON WI
2014-05-21 920-333-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F STURGEONBY WI
2014-05-21 920-345-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F WAUPUN WI
2014-05-21 920-349-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F HUSTISFORD WI
2014-05-21 920-368-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F NEOSHO WI
2014-05-21 920-372-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F KAUKAUNA WI
2014-05-21 920-395-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F SHEBOYGAN WI
2014-05-21 920-415-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F LTL CHUTE WI
2014-05-21 920-485-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F HORICON WI
2014-05-21 920-605-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F JEFFERSON WI
2014-05-21 920-710-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F HORTONVL WI
2014-05-20 920-221-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F APPLETON WI
2014-05-20 920-221-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F APPLETON WI
2014-05-20 920-241-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F DE PERE WI
2014-05-20 920-322-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F FONDDU LAC WI
2014-05-20 920-341-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F CLYMAN WI
2014-05-20 920-350-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F COLUMBUS WI
2014-05-20 920-815-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 APPLETON WI
2014-05-20 920-815-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 APPLETON WI
2014-05-20 920-815-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 APPLETON WI
2014-05-20 920-815-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 APPLETON WI
2014-05-20 920-815-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 APPLETON WI
2014-05-16 920-945-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LAKE MILLS WI
2014-05-14 920-770-0XXX 0000–0999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F GREEN BAY WI
2014-05-14 920-770-1XXX 1000–1999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F GREEN BAY WI
2014-05-14 920-770-9XXX 9000–9999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F GREEN BAY WI
2014-05-05 920-530-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREEN BAY WI
2014-04-23 920-234-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SHEBOGNFLS WI
2014-04-17 920-933-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 FONDDU LAC WI
2014-04-04 920-355-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MAPLETON WI
2014-03-27 920-583-5XXX 5000–5999Assigned UNITED STATES CELLULAR - WI 6274 OAKFIELD WI
2014-03-25 920-903-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K APPLETON WI
2014-03-14 920-306-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F BEAVER DAM WI
2014-03-14 920-393-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F GREEN BAY WI
2014-03-14 920-430-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F GREEN BAY WI
2014-03-14 920-689-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F BURNETT WI
2014-02-25 920-214-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MAYVILLE WI
2014-02-25 920-215-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F NEENAH WI
2014-02-25 920-290-6XXX 6000–6999Assigned UNITED STATES CELLULAR - WI 6274 BERLIN WI
2014-02-25 920-728-6XXX 6000–6999Assigned UNITED STATES CELLULAR - WI 6274 FTATKINSON WI
2014-02-20 920-717-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J MANITOWOC WI
2014-02-20 920-857-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K GREEN BAY WI
2014-02-18 920-637-1XXX 1000–1999Assigned UNITED STATES CELLULAR - WI 6274 NEENAH 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.