NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

12 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 608
ONVOY, LLC - WI 6
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 4
NEW CINGULAR WIRELESS PCS, LLC - IL 1
AHOI 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
2015-02-12 608-571-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2015-02-12 608-571-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2015-02-12 608-571-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2015-02-12 608-571-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2015-02-12 608-571-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2015-02-12 608-764-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F DEERFIELD WI
2015-02-06 608-881-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 LA CROSSE WI
2015-02-03 608-579-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 MCFARLAND WI
2015-01-29 608-688-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COTTAGEGRV WI
2015-01-26 608-571-1XXX 1000–1999Assigned ONVOY, LLC - WI 225C MADISON WI
2015-01-26 608-688-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F COTTAGEGRV WI
2015-01-21 608-765-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F RICHMOND WI
2015-01-21 608-879-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F ORFORDVL WI
2015-01-16 608-571-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2015-01-16 608-571-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2015-01-15 608-424-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F BELLEVILLE WI
2015-01-15 608-490-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F EVANSVILLE WI
2015-01-15 608-579-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MCFARLAND WI
2015-01-13 608-416-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MADISON WI
2015-01-12 608-322-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JANESVILLE WI
2015-01-12 608-371-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JANESVILLE WI
2015-01-08 608-563-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF WISCONSIN, LP - WI 7322 JANESVILLE WI
2015-01-05 608-636-5XXX 5000–5999Assigned UNITED STATES CELLULAR - WI 6274 NEW GLARUS WI
2014-12-30 608-299-5XXX 5000–5999Assigned NUSO, LLC 732J BELOIT WI
2014-12-30 608-472-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 ADAMS WI
2014-12-26 608-466-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 BELOIT WI
2014-12-23 608-747-2XXX 2000–2999Assigned ONVOY, LLC - WI 225C MAUSTON WI
2014-12-19 608-447-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BRODHEAD WI
2014-12-18 608-455-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F BROOKLYN WI
2014-12-18 608-856-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F BELOIT WI
2014-12-18 608-856-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F BELOIT WI
2014-12-17 608-340-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 BRIGGSVL WI
2014-12-15 608-291-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F OREGON WI
2014-12-15 608-492-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F STOUGHTON WI
2014-12-11 608-208-9XXX 9000–9999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F JANESVILLE WI
2014-12-11 608-490-8XXX 8000–8999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F EVANSVILLE WI
2014-12-11 608-719-0XXX 0000–0999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F STOUGHTON WI
2014-12-11 608-765-0XXX 0000–0999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F RICHMOND WI
2014-12-09 608-856-8XXX 8000–8999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F BELOIT WI
2014-12-08 608-304-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 LA CROSSE WI
2014-12-08 608-463-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 KENDALL WI
2014-12-08 608-496-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F CAMBRIDGE WI
2014-12-08 608-876-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 FOOTVILLE WI
2014-12-08 608-922-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 GRATIOT WI
2014-12-01 608-699-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 CAMBRIDGE WI
2014-11-26 608-429-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PARDEEVL WI
2014-11-26 608-493-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MERRIMAC WI
2014-11-26 608-564-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MONROE CTR WI
2014-11-26 608-987-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MINERAL PT WI
2014-11-25 608-318-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SUNPRAIRIE 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.