NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

10 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
Clear Download CSV ↓
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 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.