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
2012-09-19 608-572-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2012-09-11 608-490-3XXX 3000–3999Assigned UNITED STATES CELLULAR - WI 6274 EVANSVILLE WI
2012-09-11 608-745-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PORTAGE WI
2012-09-07 608-391-3XXX 3000–3999Assigned MCC TELEPHONY OF THE MIDWEST, LLC - WI 983F BOSCOBEL WI
2012-09-07 608-451-3XXX 3000–3999Assigned UNITED STATES CELLULAR - WI 6274 BANGOR WI
2012-09-06 608-418-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 ALMA WI
2012-09-05 608-852-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2012-08-24 608-467-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MADISON WI
2012-08-23 608-380-1XXX 1000–1999Assigned MCC TELEPHONY OF THE MIDWEST, LLC - WI 983F PRARIDCHIN WI
2012-08-22 608-218-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2012-08-22 608-218-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2012-08-22 608-270-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2012-08-22 608-284-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2012-08-22 608-285-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2012-08-22 608-473-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F BELOIT WI
2012-08-22 608-771-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VERONA WI
2012-08-22 608-771-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VERONA WI
2012-08-22 608-771-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VERONA WI
2012-08-22 608-771-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VERONA WI
2012-08-22 608-771-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VERONA WI
2012-08-22 608-771-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VERONA WI
2012-08-22 608-771-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VERONA WI
2012-08-22 608-771-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VERONA WI
2012-08-22 608-771-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VERONA WI
2012-08-22 608-771-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VERONA WI
2012-08-06 608-208-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 JANESVILLE WI
2012-07-30 608-519-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LA CROSSE WI
2012-07-27 608-370-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K SAUK CITY WI
2012-07-26 608-403-8XXX 8000–8999Assigned UNITED STATES CELLULAR - WI 6274 ADAMS WI
2012-07-26 608-739-5XXX 5000–5999Assigned MCC TELEPHONY OF THE MIDWEST, LLC - WI 983F MUSCODA WI
2012-07-26 608-822-9XXX 9000–9999Assigned MCC TELEPHONY OF THE MIDWEST, LLC - WI 983F FENNIMORE WI
2012-07-19 608-412-5XXX 5000–5999Assigned UNITED STATES CELLULAR - WI 6274 PRARIDCHIN WI
2012-07-18 608-518-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 LA CROSSE WI
2012-07-10 608-301-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2012-07-10 608-301-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2012-07-10 608-304-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 LA CROSSE WI
2012-07-10 608-316-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2012-07-10 608-327-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2012-07-03 608-323-5XXX 5000–5999Assigned UNITED STATES CELLULAR - WI 6274 ARCADIA WI
2012-06-29 608-381-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2012-06-29 608-381-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2012-06-19 608-497-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VERONA WI
2012-06-15 608-352-5XXX 5000–5999Assigned METROPCS, INC. 5562 JANESVILLE WI
2012-06-15 608-423-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F CAMBRIDGE WI
2012-06-15 608-473-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BELOIT WI
2012-06-14 608-495-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 REEDSBURG WI
2012-06-14 608-713-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 BELOIT WI
2012-06-06 608-745-8XXX 8000–8999Assigned UNITED STATES CELLULAR - WI 6274 PORTAGE WI
2012-06-04 608-467-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MADISON WI
2012-05-23 608-632-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WESTBY 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.