NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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 734
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 1
EXIANT COMMUNICATIONS LLC 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
2006-12-01 734-979-3XXX 3000–3999Assigned MICHIGAN BELL TEL CO 9323 PLYMOUTH MI
2006-12-01 734-979-4XXX 4000–4999Assigned MICHIGAN BELL TEL CO 9323 PLYMOUTH MI
2006-11-27 734-895-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WAYNE MI
2006-11-27 734-895-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WAYNE MI
2006-11-27 734-961-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J YPSILANTI MI
2006-11-27 734-961-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J YPSILANTI MI
2006-11-15 734-956-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LIVONIA MI
2006-11-15 734-956-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J LIVONIA MI
2006-11-14 734-470-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SALINE MI
2006-11-13 734-619-3XXX 3000–3999Assigned MICHIGAN BELL TEL CO 9323 ANN ARBOR MI
2006-11-13 734-619-4XXX 4000–4999Assigned MICHIGAN BELL TEL CO 9323 ANN ARBOR MI
2006-11-08 734-607-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LAMBERTVL MI
2006-10-20 734-593-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 CHELSEA MI
2006-09-22 734-682-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J MONROE MI
2006-09-19 734-265-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 MONROE MI
2006-09-19 734-265-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 MONROE MI
2006-09-13 734-845-3XXX 3000–3999Assigned MICHIGAN BELL TEL CO 9323 ANN ARBOR MI
2006-09-13 734-845-5XXX 5000–5999Assigned MICHIGAN BELL TEL CO 9323 ANN ARBOR MI
2006-09-05 734-441-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ROCKWOOD MI
2006-08-24 734-382-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GREGORY MI
2006-08-23 734-250-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WYANDOTTE MI
2006-08-23 734-250-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WYANDOTTE MI
2006-08-23 734-301-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TRENTON MI
2006-08-23 734-778-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLAT ROCK MI
2006-08-23 734-778-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLAT ROCK MI
2006-08-21 734-233-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 PLYMOUTH MI
2006-08-21 734-799-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CARLETON MI
2006-08-16 734-621-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MONROE MI
2006-08-16 734-621-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MONROE MI
2006-08-15 734-385-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CHELSEA MI
2006-08-14 734-369-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J ANN ARBOR MI
2006-08-14 734-369-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ANN ARBOR MI
2006-08-07 734-217-3XXX 3000–3999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 YPSILANTI MI
2006-08-07 734-225-9XXX 9000–9999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 WYANDOTTE MI
2006-08-07 734-233-6XXX 6000–6999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 PLYMOUTH MI
2006-08-07 734-237-5XXX 5000–5999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 LIVONIA MI
2006-08-07 734-239-8XXX 8000–8999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 ANN ARBOR MI
2006-08-07 734-398-4XXX 4000–4999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 WAYNE MI
2006-08-07 734-413-2XXX 2000–2999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 ROMULUS MI
2006-08-04 734-233-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLYMOUTH MI
2006-08-04 734-531-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 ANN ARBOR MI
2006-07-24 734-895-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J WAYNE MI
2006-07-24 734-895-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WAYNE MI
2006-07-18 734-556-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WYANDOTTE MI
2006-06-28 734-274-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 ANN ARBOR MI
2006-06-26 734-544-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J YPSILANTI MI
2006-06-26 734-544-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J YPSILANTI MI
2006-06-15 734-234-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 TEMPERANCE MI
2006-06-15 734-823-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 DUNDEE MI
2006-06-14 734-344-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MONROE 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.