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
2011-08-23 608-433-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA CROSSE WI
2011-08-22 608-336-1XXX 1000–1999Assigned UTELCO, INC. 0963 MONROE WI
2011-08-22 608-773-1XXX 1000–1999Assigned MID-PLAINS TEL., INC. 0881 CROSS PL WI
2011-08-22 608-820-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MIDDLETON WI
2011-08-22 608-858-1XXX 1000–1999Assigned MID-PLAINS TEL., INC. 0881 MIDDLETON WI
2011-08-19 608-450-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OXFORD WI
2011-08-16 608-765-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C RICHMOND WI
2011-08-09 608-622-9XXX 9000–9999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2011-08-05 608-478-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SUNPRAIRIE WI
2011-08-01 608-620-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-08-01 608-620-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-08-01 608-665-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-08-01 608-665-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-08-01 608-665-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-07-25 608-338-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2011-07-21 608-352-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F JANESVILLE WI
2011-07-21 608-620-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-07-20 608-561-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F EDGERTON WI
2011-07-15 608-218-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2011-07-15 608-282-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2011-07-07 608-247-8XXX 8000–8999Assigned UNITED STATES CELLULAR - WI 6274 JANESVILLE WI
2011-07-07 608-426-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WI 6274 MONROE WI
2011-06-21 608-304-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 LA CROSSE WI
2011-06-16 608-320-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2011-06-09 608-844-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WISCONDLLS WI
2011-06-07 608-371-8XXX 8000–8999Assigned WISCONSIN BELL INC 9327 JANESVILLE WI
2011-06-06 608-475-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 RICHLD CTR WI
2011-05-25 608-478-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 SUNPRAIRIE WI
2011-05-24 608-718-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JANESVILLE WI
2011-05-17 608-320-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2011-05-13 608-286-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2011-05-13 608-286-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2011-05-13 608-286-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2011-05-10 608-566-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORTAGE WI
2011-05-09 608-296-5XXX 5000–5999Assigned MARQUETTE-ADAMS TELEPHONE COOPERATIVE, INC. - WI 408G WESTFIELD WI
2011-05-09 608-296-6XXX 6000–6999Assigned MARQUETTE-ADAMS TELEPHONE COOPERATIVE, INC. - WI 408G WESTFIELD WI
2011-05-09 608-340-5XXX 5000–5999Assigned MARQUETTE-ADAMS TELEPHONE COOPERATIVE, INC. - WI 408G BRIGGSVL WI
2011-05-09 608-340-6XXX 6000–6999Assigned MARQUETTE-ADAMS TELEPHONE COOPERATIVE, INC. - WI 408G BRIGGSVL WI
2011-05-09 608-472-5XXX 5000–5999Assigned MARQUETTE-ADAMS TELEPHONE COOPERATIVE, INC. - WI 408G ADAMS WI
2011-05-09 608-472-6XXX 6000–6999Assigned MARQUETTE-ADAMS TELEPHONE COOPERATIVE, INC. - WI 408G ADAMS WI
2011-05-09 608-494-5XXX 5000–5999Assigned MARQUETTE-ADAMS TELEPHONE COOPERATIVE, INC. - WI 408G MONTELLO WI
2011-05-09 608-494-6XXX 6000–6999Assigned MARQUETTE-ADAMS TELEPHONE COOPERATIVE, INC. - WI 408G MONTELLO WI
2011-05-09 608-678-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WISCONDLLS WI
2011-05-09 608-678-7XXX 7000–7999Assigned MARQUETTE-ADAMS TELEPHONE COOPERATIVE, INC. - WI 408G WISCONDLLS WI
2011-05-09 608-678-8XXX 8000–8999Assigned MARQUETTE-ADAMS TELEPHONE COOPERATIVE, INC. - WI 408G WISCONDLLS WI
2011-05-03 608-371-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F JANESVILLE WI
2011-05-03 608-561-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F EDGERTON WI
2011-05-03 608-729-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2011-04-29 608-286-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2011-04-22 608-481-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J BELOIT 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.