NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 432
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-01-21 | 432-247-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | MIDLAND | TX |
| 2019-02-04 | 432-246-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | TERMINAL | TX |
| 2017-12-22 | 432-848-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | MIDLAND | TX |
| 2017-09-15 | 432-239-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | BALMORHEA | TX |
| 2017-09-15 | 432-295-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | MARFA | TX |
| 2017-09-15 | 432-603-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | VAN HORN | TX |
| 2017-08-03 | 432-848-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | MIDLAND | TX |
| 2016-02-11 | 432-923-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | MONAHANS | TX |
| 2016-01-20 | 432-247-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | MIDLAND | TX |
| 2015-05-05 | 432-848-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | MIDLAND | TX |
| 2015-05-05 | 432-848-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | MIDLAND | TX |
| 2015-02-16 | 432-355-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | ANDREWS | TX |
| 2014-10-20 | 432-231-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | ODESSA | TX |
| 2013-05-22 | 432-756-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | STANTON | TX |
| 2012-11-13 | 432-848-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | MIDLAND | TX |
| 2012-10-10 | 432-466-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | BIG SPRING | TX |
| 2012-07-30 | 432-538-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | ALPINE | TX |
| 2010-08-30 | 432-360-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | FTSTOCKTON | TX |
| 2009-08-26 | 432-517-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | BIG SPRING | TX |
| 2007-02-13 | 432-848-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | MIDLAND | TX |
| 2006-10-20 | 432-272-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | ODESSA | TX |
| 2004-01-16 | 432-288-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7249 | TERMINAL | TX |
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.