NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/24/2026
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 334
New assignments by month
Sep 2026
Aug 2026
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Jun 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-04-26 | 334-840-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL | 7221 | MONTGOMERY | AL |
| 2021-11-16 | 334-785-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HEADLAND | AL |
| 2018-09-12 | 334-223-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL | 7221 | MONTGOMERY | AL |
| 2016-12-07 | 334-734-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | AUBURN | AL |
| 2016-09-08 | 334-819-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL | 7221 | MONTGOMERY | AL |
| 2016-03-29 | 334-350-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DOTHAN | AL |
| 2016-02-03 | 334-552-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL | 7221 | TUSKEGEE | AL |
| 2014-02-18 | 334-434-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL | 7221 | TROY | AL |
| 2013-01-09 | 334-523-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL | 7221 | MONTGOMERY | AL |
| 2012-11-06 | 334-523-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL | 7221 | MONTGOMERY | AL |
| 2012-07-27 | 334-350-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DOTHAN | AL |
| 2012-06-05 | 334-523-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL | 7221 | MONTGOMERY | AL |
| 2012-01-06 | 334-523-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL | 7221 | MONTGOMERY | AL |
| 2010-12-29 | 334-564-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL | 7221 | THOMASVL | AL |
| 2009-04-03 | 334-523-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL | 7221 | MONTGOMERY | AL |
| 2007-07-19 | 334-731-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WETUMPKA | AL |
| 2007-05-17 | 334-450-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MONTGOMERY | AL |
| 2007-05-17 | 334-450-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MONTGOMERY | AL |
| 2007-03-08 | 334-363-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | OPELIKA | AL |
| 2007-03-08 | 334-717-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PRATTVILLE | AL |
| 2006-11-27 | 334-408-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL | 7221 | PHENIXCITY | AL |
| 2006-10-30 | 334-258-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SLOCOMB | AL |
| 2006-10-30 | 334-362-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GEORGIANA | AL |
| 2006-10-30 | 334-575-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ABBEVILLE | AL |
| 2006-10-30 | 334-662-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FORESTHOME | AL |
| 2006-10-30 | 334-723-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HARTFORD | AL |
| 2006-10-30 | 334-991-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TALLASSEE | AL |
| 2006-10-30 | 334-997-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SAMSON | AL |
| 2006-10-23 | 334-248-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GENEVA | AL |
| 2006-10-23 | 334-617-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GREENVILLE | AL |
| 2006-10-23 | 334-803-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DOTHAN | AL |
| 2006-08-22 | 334-521-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | AUBURN | AL |
| 2006-03-01 | 334-526-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SELMA | AL |
| 2005-11-04 | 334-392-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FT DEPOSIT | AL |
| 2005-09-19 | 334-424-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HOLTVILLE | AL |
| 2005-03-18 | 334-370-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | EUFAULA | AL |
| 2005-03-18 | 334-731-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WETUMPKA | AL |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.