NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026
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 612
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-05-14 | 612-815-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2014-05-14 | 612-815-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2014-05-14 | 612-815-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2014-05-14 | 612-815-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2014-05-14 | 612-815-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2014-05-14 | 612-815-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2014-05-14 | 612-815-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2014-05-14 | 612-815-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2014-05-14 | 612-815-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2014-05-14 | 612-815-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2011-04-04 | 612-354-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2011-04-04 | 612-437-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2011-04-04 | 612-924-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2011-04-04 | 612-928-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2011-04-04 | 612-928-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2011-04-04 | 612-977-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2010-10-18 | 612-587-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2010-10-18 | 612-643-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2010-10-18 | 612-787-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2010-10-18 | 612-808-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2010-10-18 | 612-813-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2010-10-18 | 612-843-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2010-10-18 | 612-844-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2010-10-18 | 612-844-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2010-08-24 | 612-643-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2010-08-24 | 612-643-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2010-08-24 | 612-643-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2009-04-14 | 612-836-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2009-04-14 | 612-836-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2009-04-14 | 612-836-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2009-04-14 | 612-884-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2009-04-14 | 612-884-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2009-02-25 | 612-568-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2008-10-22 | 612-466-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2008-10-22 | 612-466-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2008-10-22 | 612-466-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2008-03-17 | 612-524-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2008-03-17 | 612-524-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2008-03-17 | 612-524-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2007-06-22 | 612-454-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2007-06-22 | 612-454-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2007-06-22 | 612-454-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2006-09-11 | 612-326-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2006-09-11 | 612-326-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2004-10-18 | 612-235-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2004-10-18 | 612-235-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2004-04-15 | 612-241-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2004-04-15 | 612-241-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2004-04-15 | 612-241-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
| 2004-04-15 | 612-241-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWINCITIES | MN |
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.