NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

7 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 231
NEW CINGULAR WIRELESS PCS, LLC - IL 2
EXIANT COMMUNICATIONS LLC 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 2
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
2026-09-14 231-296-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FREMONT MI
2026-09-14 231-721-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HART MI
2026-09-09 231-391-7XXX 7000–7999Assigned EXIANT COMMUNICATIONS LLC 114J WALLOON LK MI
2026-09-01 231-380-7XXX 7000–7999Assigned EXIANT COMMUNICATIONS LLC 114J NEWAYGO MI
2026-08-26 231-385-7XXX 7000–7999Assigned AHOI LLC 883K CORAL MI
2026-08-26 231-469-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MUSKEGON MI
2026-08-26 231-469-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MUSKEGON MI
2026-08-19 231-379-7XXX 7000–7999Assigned OPENTACT INC. 824J ONEKAMA MI
2026-08-13 231-469-4XXX 4000–4999Assigned BOOST SUBSCRIBERCO L.L.C. 490J MUSKEGON MI
2026-08-07 231-371-7XXX 7000–7999Assigned EXIANT COMMUNICATIONS LLC 114J TUSTIN MI
2026-07-21 231-294-7XXX 7000–7999Assigned EXIANT COMMUNICATIONS LLC 114J FIFE LAKE MI
2026-07-07 231-254-7XXX 7000–7999Assigned AHOI LLC 883K PETOSKEY MI
2026-06-11 231-428-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E MUSKEGON MI
2026-06-10 231-613-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G SCOTTVILLE MI
2026-05-11 231-643-2XXX 2000–2999Assigned TERRA NOVA TELECOM INC. 145J MORLEY MI
2026-04-29 231-280-7XXX 7000–7999Assigned AHOI LLC 883K MANCELONA MI
2026-04-29 231-438-4XXX 4000–4999Assigned AHOI LLC 883K HARBOR SPG MI
2026-04-29 231-438-7XXX 7000–7999Assigned EXIANT COMMUNICATIONS LLC 114J HARBOR SPG MI
2026-04-29 231-446-5XXX 5000–5999Assigned EXIANT COMMUNICATIONS LLC 114J NORTHPORT MI
2026-04-29 231-452-9XXX 9000–9999Assigned AHOI LLC 883K NEWAYGO MI
2026-04-07 231-823-1XXX 1000–1999Assigned TERRA NOVA TELECOM INC. 145J STANWOOD MI
2026-04-07 231-852-1XXX 1000–1999Assigned TERRA NOVA TELECOM INC. 145J LUDINGTON MI
2026-04-01 231-203-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ALANSON MI
2026-03-19 231-469-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MUSKEGON MI
2026-03-05 231-433-3XXX 3000–3999Assigned TERRA NOVA TELECOM INC. 145J MOORESTOWN MI
2026-02-25 231-428-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MUSKEGON MI
2026-02-19 231-865-9XXX 9000–9999Assigned TERRA NOVA TELECOM INC. 145J FRUITPORT MI
2026-01-13 231-424-2XXX 2000–2999Assigned TERRA NOVA TELECOM INC. 145J CARR MI
2025-12-17 231-341-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LAKE ANN MI
2025-12-17 231-545-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E BOYNEFALLS MI
2025-11-12 231-304-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E BRUTUS MI
2025-11-12 231-626-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LEVERING MI
2025-10-24 231-410-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MANISTEE MI
2025-10-07 231-442-5XXX 5000–5999Assigned HD CARRIER LLC 321J HARRIETTA MI
2025-10-01 231-370-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MUSKEGON MI
2025-09-24 231-594-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HART MI
2025-09-18 231-552-2XXX 2000–2999Assigned TERRA NOVA TELECOM INC. 145J CHARLEVOIX MI
2025-09-16 231-425-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LUDINGTON MI
2025-08-28 231-887-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MANISTEE MI
2025-08-25 231-419-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BELLAIRE MI
2025-07-31 231-552-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CHARLEVOIX MI
2025-07-07 231-646-4XXX 4000–4999Assigned TERRA NOVA TELECOM INC. 145J ELLSWORTH MI
2025-07-03 231-643-1XXX 1000–1999Assigned TERRA NOVA TELECOM INC. 145J MORLEY MI
2025-07-03 231-871-6XXX 6000–6999Assigned TERRA NOVA TELECOM INC. 145J BEULAH MI
2025-07-03 231-912-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J REED CITY MI
2025-06-18 231-210-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J ST JAMES MI
2025-06-18 231-223-6XXX 6000–6999Assigned TERRA NOVA TELECOM INC. 145J OLDMISSION MI
2025-06-18 231-320-5XXX 5000–5999Assigned TERRA NOVA TELECOM INC. 145J TRCHRIVBDG MI
2025-06-18 231-376-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J TWIN LAKE MI
2025-06-18 231-404-4XXX 4000–4999Assigned TERRA NOVA TELECOM INC. 145J STANWOOD 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.