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
2008-10-22 608-588-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F SPG GREEN WI
2008-10-17 608-772-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2008-10-17 608-772-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2008-10-17 608-772-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2008-10-13 608-616-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2008-10-09 608-521-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 READSTOWN WI
2008-10-09 608-545-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 YUBA WI
2008-10-09 608-639-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 LA FARGE WI
2008-10-09 608-804-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 GENOA WI
2008-09-24 608-403-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 ADAMS WI
2008-09-24 608-509-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2008-09-18 608-632-5XXX 5000–5999Assigned UNITED STATES CELLULAR - WI 6274 WESTBY WI
2008-09-16 608-408-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 BRIGGSVL WI
2008-09-16 608-721-0XXX 0000–0999Assigned ONVOY, LLC - WI 225C MADISON WI
2008-09-16 608-721-1XXX 1000–1999Assigned ONVOY, LLC - WI 225C MADISON WI
2008-09-16 608-819-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MADISON WI
2008-09-09 608-338-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2008-09-09 608-609-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2008-09-09 608-609-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2008-08-20 608-546-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PLAIN WI
2008-08-20 608-666-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LYNDON STA WI
2008-08-20 608-753-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ARENA WI
2008-08-18 608-609-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2008-08-12 608-665-0XXX 0000–0999Assigned TDS METROCOM, LLC 520K MADISON WI
2008-08-07 608-327-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MADISON WI
2008-08-07 608-729-2XXX 2000–2999Assigned TDS METROCOM, LLC 520K MADISON WI
2008-08-05 608-622-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2008-08-05 608-622-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2008-08-05 608-622-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2008-08-05 608-622-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2008-08-05 608-622-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2008-08-05 608-622-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2008-08-01 608-205-7XXX 7000–7999Assigned UNITED STATES CELLULAR - WI 6274 STOUGHTON WI
2008-07-02 608-807-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2008-07-02 608-807-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2008-06-09 608-408-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 BRIGGSVL WI
2008-06-09 608-807-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2008-06-09 608-807-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2008-06-03 608-340-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WI 6274 BRIGGSVL WI
2008-05-23 608-719-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STOUGHTON WI
2008-05-15 608-352-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C JANESVILLE WI
2008-05-14 608-474-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADAMS WI
2008-05-12 608-371-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 JANESVILLE WI
2008-05-12 608-839-2XXX 2000–2999Assigned FRONTIER NORTH INC. - WI 0886 COTTAGEGRV WI
2008-04-30 608-728-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J JANESVILLE WI
2008-04-28 608-284-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J MADISON WI
2008-04-28 608-284-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MADISON WI
2008-04-28 608-379-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MOUNT HOPE WI
2008-04-28 608-519-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LA CROSSE WI
2008-04-25 608-563-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K JANESVILLE 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.