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
2011-04-08 608-665-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C MADISON WI
2011-04-05 608-352-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F JANESVILLE WI
2011-04-05 608-473-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F BELOIT WI
2011-04-05 608-492-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F STOUGHTON WI
2011-04-05 608-620-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-04-05 608-620-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-04-05 608-620-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-04-05 608-620-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-04-05 608-620-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-04-05 608-620-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-03-25 608-477-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BARABOO WI
2011-03-10 608-719-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J STOUGHTON WI
2011-03-04 608-713-2XXX 2000–2999Assigned METROPCS, INC. 5562 BELOIT WI
2011-03-03 608-433-1XXX 1000–1999Assigned METROPCS, INC. 5562 LA CROSSE WI
2011-03-03 608-433-3XXX 3000–3999Assigned METROPCS, INC. 5562 LA CROSSE WI
2011-03-03 608-466-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F BELOIT WI
2011-02-25 608-475-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 RICHLD CTR WI
2011-02-25 608-745-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTAGE WI
2011-02-23 608-466-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F BELOIT WI
2011-02-23 608-492-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F STOUGHTON WI
2011-02-23 608-561-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F EDGERTON WI
2011-02-23 608-721-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-02-23 608-721-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-02-18 608-461-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 BANGOR WI
2011-02-16 608-519-7XXX 7000–7999Assigned METROPCS, INC. 5562 LA CROSSE WI
2011-02-16 608-567-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TOMAH WI
2011-02-15 608-515-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MADISON WI
2011-02-15 608-520-8XXX 8000–8999Assigned METROPCS, INC. 5562 MADISON WI
2011-02-15 608-520-9XXX 9000–9999Assigned METROPCS, INC. 5562 MADISON WI
2011-02-01 608-406-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA CROSSE WI
2011-01-31 608-561-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K EDGERTON WI
2011-01-28 608-391-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 BOSCOBEL WI
2011-01-25 608-855-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 SPARTA WI
2011-01-19 608-224-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2011-01-19 608-234-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2011-01-19 608-250-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2011-01-19 608-250-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2011-01-19 608-259-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2011-01-19 608-260-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2011-01-19 608-284-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2011-01-19 608-304-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 LA CROSSE WI
2011-01-19 608-373-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 JANESVILLE WI
2011-01-18 608-477-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 BARABOO WI
2011-01-05 608-359-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 JANESVILLE WI
2011-01-05 608-359-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 JANESVILLE WI
2011-01-05 608-520-1XXX 1000–1999Assigned METROPCS, INC. 5562 MADISON WI
2011-01-05 608-520-2XXX 2000–2999Assigned METROPCS, INC. 5562 MADISON WI
2011-01-05 608-520-3XXX 3000–3999Assigned METROPCS, INC. 5562 MADISON WI
2011-01-05 608-520-4XXX 4000–4999Assigned METROPCS, INC. 5562 MADISON WI
2011-01-05 608-520-5XXX 5000–5999Assigned METROPCS, INC. 5562 MADISON 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.