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 517
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 5
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 1
LEVEL 3 COMMUNICATIONS, LLC - MI 1
INTRADO COMMUNICATIONS, LLC 1
BOOST SUBSCRIBERCO L.L.C. 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
2026-09-16 517-326-7XXX 7000–7999Assigned INTRADO COMMUNICATIONS, LLC 821C LANSING MI
2026-09-01 517-447-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 DEERFIELD MI
2026-08-28 517-396-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 JACKSON MI
2026-08-28 517-396-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 JACKSON MI
2026-08-28 517-396-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 JACKSON MI
2026-08-28 517-418-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 HOMER MI
2026-08-28 517-587-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 LANSING MI
2026-08-28 517-587-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 LANSING MI
2026-08-26 517-387-7XXX 7000–7999Assigned AHOI LLC 883K HILLSDALE MI
2026-08-26 517-399-7XXX 7000–7999Assigned BOOST SUBSCRIBERCO L.L.C. 490J EATON RPD MI
2026-08-20 517-692-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 SPRINGPORT MI
2026-08-19 517-382-7XXX 7000–7999Assigned OPENTACT INC. 824J LESLIE MI
2026-08-18 517-218-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PORTLAND MI
2026-08-18 517-672-3XXX 3000–3999Assigned TERRA NOVA TELECOM INC. 145J HOWELL MI
2026-08-06 517-307-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 JACKSON MI
2026-07-24 517-471-0XXX 0000–0999Assigned VOIP INNOVATIONS, LLC 597F ONONDAGA MI
2026-07-24 517-551-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FOWLERVL MI
2026-07-07 517-361-7XXX 7000–7999Assigned AHOI LLC 883K NASHVILLE MI
2026-06-24 517-389-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADRIAN MI
2026-06-18 517-587-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E LANSING MI
2026-06-18 517-587-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E LANSING MI
2026-06-18 517-587-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E LANSING MI
2026-06-18 517-587-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E LANSING MI
2026-06-18 517-587-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E LANSING MI
2026-06-18 517-587-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E LANSING MI
2026-06-18 517-587-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E LANSING MI
2026-06-02 517-587-8XXX 8000–8999Assigned AHOI LLC 883K LANSING MI
2026-05-27 517-385-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANSING MI
2026-05-27 517-385-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANSING MI
2026-05-27 517-385-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANSING MI
2026-05-27 517-385-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANSING MI
2026-05-19 517-259-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 JACKSON MI
2026-05-11 517-568-2XXX 2000–2999Assigned TERRA NOVA TELECOM INC. 145J HOMER MI
2026-04-29 517-218-7XXX 7000–7999Assigned AHOI LLC 883K PORTLAND MI
2026-04-27 517-387-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HILLSDALE MI
2026-04-07 517-728-1XXX 1000–1999Assigned TERRA NOVA TELECOM INC. 145J TEKONSHA MI
2026-04-03 517-289-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LANSING MI
2026-04-01 517-726-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E VERMONTVL MI
2026-04-01 517-797-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E HILLSDALE MI
2026-03-26 517-307-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSON MI
2026-03-26 517-307-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSON MI
2026-03-25 517-268-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLT MI
2026-03-19 517-328-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANSING MI
2026-03-19 517-328-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANSING MI
2026-03-19 517-328-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANSING MI
2026-03-11 517-307-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSON MI
2026-03-05 517-283-9XXX 9000–9999Assigned TERRA NOVA TELECOM INC. 145J READING MI
2026-03-05 517-625-9XXX 9000–9999Assigned TERRA NOVA TELECOM INC. 145J PERRY MI
2026-03-05 517-910-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J ONONDAGA MI
2026-03-04 517-259-5XXX 5000–5999Assigned BOOST SUBSCRIBERCO L.L.C. 490J JACKSON MI

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.