NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

12 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2004-05-07 608-728-3XXX 3000–3999Assigned UNITED STATES CELLULAR - WI 6274 JANESVILLE WI
2004-05-07 608-728-4XXX 4000–4999Assigned UNITED STATES CELLULAR - WI 6274 JANESVILLE WI
2004-04-13 608-448-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BARABOO WI
2004-04-07 608-669-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2004-04-07 608-669-1XXX 1000–1999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2004-04-07 608-669-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2004-04-07 608-669-3XXX 3000–3999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2004-04-07 608-669-4XXX 4000–4999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2004-04-07 608-669-5XXX 5000–5999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2004-04-07 608-669-6XXX 6000–6999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2004-04-07 608-669-7XXX 7000–7999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2004-04-07 608-669-8XXX 8000–8999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2004-04-01 608-230-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MADISON WI
2004-03-24 608-397-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LA CROSSE WI
2004-03-24 608-567-8XXX 8000–8999Assigned METROPCS, INC. 5562 TOMAH WI
2004-03-15 608-205-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 STOUGHTON WI
2004-02-11 608-217-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MADISON WI
2004-02-04 608-886-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2004-02-04 608-886-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2004-02-03 608-291-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K OREGON WI
2004-02-03 608-318-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K SUNPRAIRIE WI
2004-02-02 608-397-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LA CROSSE WI
2004-01-21 608-207-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BELOIT WI
2004-01-21 608-838-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MCFARLAND WI
2004-01-21 608-839-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K COTTAGEGRV WI
2004-01-20 608-563-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K JANESVILLE WI
2004-01-06 608-216-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MADISON WI
2003-12-11 608-890-0XXX 0000–0999Assigned WISCONSIN BELL INC 9327 MADISON WI
2003-12-11 608-890-1XXX 1000–1999Assigned WISCONSIN BELL INC 9327 MADISON WI
2003-12-11 608-890-2XXX 2000–2999Assigned WISCONSIN BELL INC 9327 MADISON WI
2003-12-11 608-890-3XXX 3000–3999Assigned WISCONSIN BELL INC 9327 MADISON WI
2003-12-11 608-890-4XXX 4000–4999Assigned WISCONSIN BELL INC 9327 MADISON WI
2003-12-11 608-890-5XXX 5000–5999Assigned WISCONSIN BELL INC 9327 MADISON WI
2003-12-11 608-890-6XXX 6000–6999Assigned WISCONSIN BELL INC 9327 MADISON WI
2003-12-11 608-890-7XXX 7000–7999Assigned WISCONSIN BELL INC 9327 MADISON WI
2003-12-11 608-890-8XXX 8000–8999Assigned WISCONSIN BELL INC 9327 MADISON WI
2003-12-11 608-890-9XXX 9000–9999Assigned WISCONSIN BELL INC 9327 MADISON WI
2003-11-25 608-636-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 NEW GLARUS WI
2003-11-11 608-886-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2003-10-07 608-415-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 REEDSBURG WI
2003-10-07 608-415-1XXX 1000–1999Assigned UNITED STATES CELLULAR - WI 6274 REEDSBURG WI
2003-10-07 608-415-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WI 6274 REEDSBURG WI
2003-10-07 608-415-3XXX 3000–3999Assigned UNITED STATES CELLULAR - WI 6274 REEDSBURG WI
2003-10-01 608-370-1XXX 1000–1999Assigned UNITED STATES CELLULAR - WI 6274 SAUK CITY WI
2003-10-01 608-370-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WI 6274 SAUK CITY WI
2003-10-01 608-370-3XXX 3000–3999Assigned UNITED STATES CELLULAR - WI 6274 SAUK CITY WI
2003-10-01 608-370-4XXX 4000–4999Assigned UNITED STATES CELLULAR - WI 6274 SAUK CITY WI
2003-10-01 608-412-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 PRARIDCHIN WI
2003-10-01 608-412-1XXX 1000–1999Assigned UNITED STATES CELLULAR - WI 6274 PRARIDCHIN WI
2003-10-01 608-412-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WI 6274 PRARIDCHIN WI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.