NumberResearch Membership · Data 09/26/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026

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, all time — NPA 269
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 39
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
2023-03-29 269-401-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 BATTLE CRK MI
2020-06-02 269-315-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 VICKSBURG MI
2016-11-04 269-243-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 BATTLE CRK MI
2016-11-04 269-243-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 BATTLE CRK MI
2016-06-17 269-482-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 OTSEGO MI
2016-06-09 269-294-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 CENTREVL MI
2015-04-02 269-775-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 KALAMAZOO MI
2014-10-06 269-220-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 KALAMAZOO MI
2014-10-06 269-359-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 KALAMAZOO MI
2013-11-14 269-359-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 KALAMAZOO MI
2012-11-06 269-215-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 RICHLAND MI
2012-11-06 269-228-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 CASSOPOLIS MI
2012-11-06 269-244-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 THREERIVRS MI
2012-11-06 269-264-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 HAMILTON MI
2012-11-06 269-302-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 BANGOR MI
2012-11-06 269-421-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 BERRIENSPG MI
2012-11-06 269-462-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 DOWAGIAC MI
2012-11-06 269-463-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 WATERVLIET MI
2012-11-06 269-468-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 COLOMA MI
2012-11-06 269-612-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 NEWBUFFALO MI
2012-11-06 269-820-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 THREE OAKS MI
2012-03-20 269-941-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 ALLEGAN MI
2012-03-19 269-299-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 LAWTON MI
2012-03-19 269-415-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 PAW PAW MI
2012-03-06 269-459-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 KALAMAZOO MI
2011-12-28 269-319-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 STURGIS MI
2011-11-22 269-214-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 SOUTHHAVEN MI
2011-08-04 269-200-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 GALESBURG MI
2009-01-29 269-425-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 BATTLE CRK MI
2007-01-17 269-903-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 KALAMAZOO MI
2005-08-03 269-204-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 PLAINWELL MI
2005-08-03 269-258-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 WAYLAND MI
2005-08-03 269-408-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 ST JOSEPH MI
2005-08-03 269-487-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 BENTON HBR MI
2005-08-03 269-558-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 MARSHALL MI
2005-08-03 269-845-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 NILES MI
2005-08-03 269-903-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 KALAMAZOO MI
2005-08-03 269-908-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 HASTINGS MI
2005-08-03 269-924-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7157 BATTLE CRK MI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.