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
2008-01-28 734-286-8XXX 8000–8999Assigned METROPCS, INC. 5562 WYANDOTTE MI
2008-01-22 734-402-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LIVONIA MI
2008-01-21 734-747-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2008-01-21 734-747-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2008-01-17 734-666-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LIVONIA MI
2007-12-28 734-863-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C ERIE MI
2007-12-28 734-863-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C ERIE MI
2007-12-28 734-863-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C ERIE MI
2007-12-28 734-863-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C ERIE MI
2007-11-27 734-286-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J WYANDOTTE MI
2007-11-27 734-301-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J TRENTON MI
2007-11-27 734-386-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J PLYMOUTH MI
2007-11-27 734-494-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J ROMULUS MI
2007-11-27 734-639-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J MONROE MI
2007-11-27 734-695-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J YPSILANTI MI
2007-11-27 734-865-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J BELLEVILLE MI
2007-11-27 734-931-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J FLAT ROCK MI
2007-11-20 734-648-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 PINCKNEY MI
2007-11-15 734-363-3XXX 3000–3999Assigned METROPCS, INC. 5562 TRENTON MI
2007-11-15 734-363-4XXX 4000–4999Assigned METROPCS, INC. 5562 TRENTON MI
2007-11-15 734-363-5XXX 5000–5999Assigned METROPCS, INC. 5562 TRENTON MI
2007-11-13 734-926-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2007-10-29 734-234-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 TEMPERANCE MI
2007-10-18 734-931-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLAT ROCK MI
2007-10-05 734-217-6XXX 6000–6999Assigned METROPCS, INC. 5562 YPSILANTI MI
2007-10-05 734-217-7XXX 7000–7999Assigned METROPCS, INC. 5562 YPSILANTI MI
2007-10-04 734-686-8XXX 8000–8999Assigned METROPCS, INC. 5562 ANN ARBOR MI
2007-10-04 734-686-9XXX 9000–9999Assigned METROPCS, INC. 5562 ANN ARBOR MI
2007-10-04 734-772-4XXX 4000–4999Assigned METROPCS, INC. 5562 LIVONIA MI
2007-09-25 734-789-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J FLAT ROCK MI
2007-09-18 734-288-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WYANDOTTE MI
2007-09-13 734-233-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLYMOUTH MI
2007-09-11 734-329-1XXX 1000–1999Assigned METROPCS, INC. 5562 WAYNE MI
2007-09-11 734-329-3XXX 3000–3999Assigned METROPCS, INC. 5562 WAYNE MI
2007-09-11 734-363-0XXX 0000–0999Assigned METROPCS, INC. 5562 TRENTON MI
2007-09-11 734-363-1XXX 1000–1999Assigned METROPCS, INC. 5562 TRENTON MI
2007-09-11 734-686-5XXX 5000–5999Assigned METROPCS, INC. 5562 ANN ARBOR MI
2007-09-11 734-686-7XXX 7000–7999Assigned METROPCS, INC. 5562 ANN ARBOR MI
2007-09-11 734-695-0XXX 0000–0999Assigned METROPCS, INC. 5562 YPSILANTI MI
2007-09-11 734-695-1XXX 1000–1999Assigned METROPCS, INC. 5562 YPSILANTI MI
2007-09-11 734-778-7XXX 7000–7999Assigned METROPCS, INC. 5562 FLAT ROCK MI
2007-09-11 734-795-0XXX 0000–0999Assigned METROPCS, INC. 5562 FLAT ROCK MI
2007-09-11 734-796-4XXX 4000–4999Assigned METROPCS, INC. 5562 BELLEVILLE MI
2007-09-11 734-796-5XXX 5000–5999Assigned METROPCS, INC. 5562 BELLEVILLE MI
2007-09-06 734-469-4XXX 4000–4999Assigned BHN IP ENABLED SERVICES, LLC 045L LIVONIA MI
2007-08-29 734-244-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MONROE MI
2007-08-29 734-244-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MONROE MI
2007-08-20 734-396-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 MANCHESTER MI
2007-08-02 734-648-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 PINCKNEY MI
2007-07-17 734-230-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 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.