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
2014-11-06 608-554-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K JANESVILLE WI
2014-11-03 608-309-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BLAIR WI
2014-11-03 608-330-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PLATTEVL WI
2014-11-03 608-344-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TOMAH WI
2014-11-03 608-390-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CENTERVL WI
2014-11-03 608-399-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HOLMEN WI
2014-11-03 608-409-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ARCADIA WI
2014-11-03 608-430-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 ETTRICK WI
2014-11-03 608-461-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 BANGOR WI
2014-11-03 608-462-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 ELROY WI
2014-11-03 608-468-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FOUNTAINCY WI
2014-11-03 608-482-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DARLINGTON WI
2014-11-03 608-484-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GALESVILLE WI
2014-11-03 608-491-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 SHULLSBURG WI
2014-11-03 608-499-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HAZELGREEN WI
2014-11-03 608-543-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 ARGYLE WI
2014-11-03 608-557-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WONEWOC WI
2014-11-03 608-563-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J JANESVILLE WI
2014-11-03 608-573-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 POYNETTE WI
2014-11-03 608-580-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MILTON WI
2014-11-03 608-659-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MINDORO WI
2014-11-03 608-737-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 NO FREEDOM WI
2014-11-03 608-739-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MUSCODA WI
2014-11-03 608-892-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WARRENS WI
2014-11-03 608-943-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MONTFORT WI
2014-10-31 608-351-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WEST SALEM WI
2014-10-31 608-391-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BOSCOBEL WI
2014-10-31 608-402-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BARABOO WI
2014-10-31 608-532-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 AVOCA WI
2014-10-31 608-534-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 TREMPEALEU WI
2014-10-31 608-654-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 CASHTON WI
2014-10-31 608-929-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 HIGHLAND WI
2014-10-29 608-416-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2014-10-29 608-501-5XXX 5000–5999Assigned UNITED STATES CELLULAR - WI 6274 STOUGHTON WI
2014-10-28 608-402-7XXX 7000–7999Assigned ONVOY, LLC - WI 225C BARABOO WI
2014-10-27 608-764-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F DEERFIELD WI
2014-10-23 608-399-5XXX 5000–5999Assigned UNITED STATES CELLULAR - WI 6274 HOLMEN WI
2014-10-22 608-462-7XXX 7000–7999Assigned UNITED STATES CELLULAR - WI 6274 ELROY WI
2014-10-22 608-519-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LA CROSSE WI
2014-10-15 608-416-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MADISON WI
2014-10-15 608-842-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DE FOREST WI
2014-10-15 608-855-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPARTA WI
2014-10-13 608-571-0XXX 0000–0999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F MADISON WI
2014-10-10 608-436-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JANESVILLE WI
2014-10-10 608-436-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JANESVILLE WI
2014-10-07 608-416-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MADISON WI
2014-10-07 608-440-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 MADISON WI
2014-10-06 608-350-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MAUSTON WI
2014-10-01 608-713-5XXX 5000–5999Assigned METROPCS, INC. 5562 BELOIT WI
2014-09-24 608-319-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DODGEVILLE 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.