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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2009-10-15 608-501-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 STOUGHTON WI
2009-10-06 608-556-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2009-09-22 608-423-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CAMBRIDGE WI
2009-08-27 608-609-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2009-08-21 608-381-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2009-08-21 608-381-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2009-08-21 608-408-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 BRIGGSVL WI
2009-08-21 608-512-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2009-08-21 608-514-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2009-08-18 608-459-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 SPG GREEN WI
2009-08-10 608-415-8XXX 8000–8999Assigned UNITED STATES CELLULAR - WI 6274 REEDSBURG WI
2009-07-30 608-509-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2009-07-30 608-509-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2009-06-09 608-509-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2009-06-09 608-509-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2009-04-22 608-514-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2009-04-22 608-514-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2009-04-22 608-514-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2009-03-17 608-729-6XXX 6000–6999Assigned TDS METROCOM, LLC 520K MADISON WI
2009-03-05 608-490-1XXX 1000–1999Assigned UNITED STATES CELLULAR - WI 6274 EVANSVILLE WI
2009-02-11 608-556-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2009-02-11 608-556-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2009-02-04 608-298-3XXX 3000–3999Assigned ONVOY, LLC - WI 225C MADISON WI
2009-02-04 608-514-7XXX 7000–7999Assigned ONVOY, LLC - WI 225C MADISON WI
2009-02-04 608-514-8XXX 8000–8999Assigned ONVOY, LLC - WI 225C MADISON WI
2009-02-04 608-514-9XXX 9000–9999Assigned ONVOY, LLC - WI 225C MADISON WI
2008-12-31 608-318-8XXX 8000–8999Assigned FRONTIER NORTH INC. - WI 0886 SUNPRAIRIE WI
2008-12-02 608-678-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WISCONDLLS WI
2008-11-17 608-280-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2008-11-17 608-417-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2008-11-17 608-417-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2008-11-17 608-718-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JANESVILLE WI
2008-11-17 608-718-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JANESVILLE WI
2008-11-17 608-718-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JANESVILLE WI
2008-11-17 608-718-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JANESVILLE WI
2008-11-17 608-718-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JANESVILLE WI
2008-11-17 608-718-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JANESVILLE WI
2008-10-23 608-466-7XXX 7000–7999Assigned ONVOY, LLC - WI 225C BELOIT WI
2008-10-23 608-554-6XXX 6000–6999Assigned ONVOY, LLC - WI 225C JANESVILLE WI
2008-10-22 608-205-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F STOUGHTON WI
2008-10-22 608-301-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2008-10-22 608-313-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F BELOIT WI
2008-10-22 608-315-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F TOMAH WI
2008-10-22 608-318-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F SUNPRAIRIE WI
2008-10-22 608-352-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F JANESVILLE WI
2008-10-22 608-403-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F ADAMS WI
2008-10-22 608-406-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F LA CROSSE WI
2008-10-22 608-432-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F WISCONDLLS WI
2008-10-22 608-448-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F BARABOO WI
2008-10-22 608-561-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F EDGERTON 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.