NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

10 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 4
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
2020-08-31 608-851-8XXX 8000–8999Assigned ONVOY, LLC - WI 225C MONROE WI
2020-08-18 608-420-0XXX 0000–0999Assigned FRACTEL, LLC 965H ALBANY WI
2020-08-18 608-529-3XXX 3000–3999Assigned FRACTEL, LLC 965H CUBA CITY WI
2020-08-18 608-529-9XXX 9000–9999Assigned FRACTEL, LLC 965H CUBA CITY WI
2020-08-17 608-707-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 MADISON WI
2020-08-04 608-292-1XXX 1000–1999Assigned NUSO, LLC 478J MADISON WI
2020-07-29 608-391-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BOSCOBEL WI
2020-07-29 608-413-5XXX 5000–5999Assigned ONVOY, LLC - WI 225C CROSS PL WI
2020-07-29 608-413-6XXX 6000–6999Assigned ONVOY, LLC - WI 225C CROSS PL WI
2020-07-29 608-420-5XXX 5000–5999Assigned ONVOY, LLC - WI 225C ALBANY WI
2020-07-29 608-420-6XXX 6000–6999Assigned ONVOY, LLC - WI 225C ALBANY WI
2020-07-29 608-581-7XXX 7000–7999Assigned ONVOY, LLC - WI 225C BARABOO WI
2020-07-28 608-468-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOUNTAINCY WI
2020-07-22 608-461-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 BANGOR WI
2020-07-08 608-667-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 LA CROSSE WI
2020-07-08 608-667-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 LA CROSSE WI
2020-07-08 608-667-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 LA CROSSE WI
2020-07-08 608-667-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 LA CROSSE WI
2020-07-08 608-690-2XXX 2000–2999Assigned CSC WIRELESS, LLC 425J MADISON WI
2020-06-18 608-336-0XXX 0000–0999Assigned ONVOY, LLC - WI 225C MONROE WI
2020-06-18 608-336-2XXX 2000–2999Assigned ONVOY, LLC - WI 225C MONROE WI
2020-06-18 608-377-6XXX 6000–6999Assigned ONVOY, LLC - WI 225C TOMAH WI
2020-06-18 608-377-9XXX 9000–9999Assigned ONVOY, LLC - WI 225C TOMAH WI
2020-06-18 608-596-5XXX 5000–5999Assigned ONVOY, LLC - WI 225C NOAPPLERIV WI
2020-06-18 608-677-6XXX 6000–6999Assigned ONVOY, LLC - WI 225C NO WARREN WI
2020-06-18 608-710-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H MADISON WI
2020-06-18 608-866-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H MADISON WI
2020-06-18 608-866-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H MADISON WI
2020-06-18 608-866-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H MADISON WI
2020-06-16 608-670-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MOUNTHOREB WI
2020-06-09 608-299-4XXX 4000–4999Assigned ONVOY, LLC - WI 225C BELOIT WI
2020-06-09 608-631-5XXX 5000–5999Assigned ONVOY, LLC - WI 225C BELOIT WI
2020-06-05 608-400-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2020-06-05 608-696-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPARTA WI
2020-06-05 608-696-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPARTA WI
2020-06-05 608-696-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPARTA WI
2020-06-05 608-866-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MADISON WI
2020-05-18 608-465-5XXX 5000–5999Assigned ONVOY, LLC - WI 225C WOODFORD WI
2020-05-18 608-523-8XXX 8000–8999Assigned ONVOY, LLC - WI 225C BLANCHADVL WI
2020-05-18 608-557-6XXX 6000–6999Assigned ONVOY, LLC - WI 225C WONEWOC WI
2020-05-18 608-557-8XXX 8000–8999Assigned ONVOY, LLC - WI 225C WONEWOC WI
2020-05-18 608-560-0XXX 0000–0999Assigned ONVOY, LLC - WI 225C NECEDAH WI
2020-05-18 608-580-8XXX 8000–8999Assigned ONVOY, LLC - WI 225C MILTON WI
2020-05-18 608-636-8XXX 8000–8999Assigned ONVOY, LLC - WI 225C NEW GLARUS WI
2020-05-15 608-529-1XXX 1000–1999Assigned MCC TELEPHONY OF THE MIDWEST, LLC - WI 983F CUBA CITY WI
2020-05-15 608-681-1XXX 1000–1999Assigned MCC TELEPHONY OF THE MIDWEST, LLC - WI 983F VIOLA WI
2020-05-15 608-885-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANCASTER WI
2020-05-13 608-865-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GALESVILLE WI
2020-05-05 608-639-2XXX 2000–2999Assigned MCC TELEPHONY OF THE MIDWEST, LLC - WI 983F LA FARGE WI
2020-05-05 608-866-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 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.