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
2006-10-05 608-322-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 JANESVILLE WI
2006-10-05 608-322-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 JANESVILLE WI
2006-10-04 608-395-2XXX 2000–2999Assigned TDS METROCOM, LLC 520K MADISON WI
2006-10-04 608-395-3XXX 3000–3999Assigned TDS METROCOM, LLC 520K MADISON WI
2006-09-28 608-230-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MADISON WI
2006-09-12 608-287-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2006-09-12 608-287-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2006-09-12 608-287-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2006-09-05 608-399-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 HOLMEN WI
2006-08-25 608-390-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 CENTERVL WI
2006-08-25 608-468-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 FOUNTAINCY WI
2006-08-25 608-864-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 BLAIR WI
2006-08-21 608-830-2XXX 2000–2999Assigned MID-PLAINS TEL., INC. 0881 MIDDLETON WI
2006-08-21 608-830-3XXX 3000–3999Assigned MID-PLAINS TEL., INC. 0881 MIDDLETON WI
2006-08-17 608-729-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MADISON WI
2006-08-16 608-322-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 JANESVILLE WI
2006-08-11 608-957-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MADISON WI
2006-08-11 608-957-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MADISON WI
2006-07-28 608-467-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MADISON WI
2006-07-25 608-216-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2006-07-25 608-354-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2006-07-24 608-319-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 DODGEVILLE WI
2006-07-24 608-360-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 LOGANVILLE WI
2006-07-24 608-370-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 SAUK CITY WI
2006-07-24 608-396-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MELROSE WI
2006-06-21 608-383-3XXX 3000–3999Assigned UNITED STATES CELLULAR - WI 6274 RICHLD CTR WI
2006-06-21 608-383-4XXX 4000–4999Assigned UNITED STATES CELLULAR - WI 6274 RICHLD CTR WI
2006-06-20 608-957-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MADISON WI
2006-06-20 608-957-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MADISON WI
2006-06-12 608-738-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LA CROSSE WI
2006-06-05 608-497-2XXX 2000–2999Assigned MT. VERNON TEL. CO. 0917 VERONA WI
2006-06-01 608-203-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MIDDLETON WI
2006-05-26 608-554-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 JANESVILLE WI
2006-05-24 608-566-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PORTAGE WI
2006-05-24 608-567-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TOMAH WI
2006-05-23 608-467-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MADISON WI
2006-04-12 608-322-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 JANESVILLE WI
2006-03-09 608-406-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 LA CROSSE WI
2006-02-27 608-738-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LA CROSSE WI
2006-02-17 608-492-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 STOUGHTON WI
2006-02-17 608-492-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 STOUGHTON WI
2006-02-14 608-563-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K JANESVILLE WI
2006-02-10 608-216-7XXX 7000–7999Assigned TDS METROCOM, LLC 520K MADISON WI
2006-02-10 608-216-9XXX 9000–9999Assigned TDS METROCOM, LLC 520K MADISON WI
2006-02-10 608-906-0XXX 0000–0999Assigned ONVOY, LLC - WI 225C MADISON WI
2006-02-08 608-354-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2006-02-08 608-497-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VERONA WI
2006-02-06 608-850-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WAUNAKEE WI
2006-01-31 608-519-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LA CROSSE WI
2006-01-16 608-424-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BELLEVILLE 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.