NumberResearchRecent thousands-block assignments
1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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, last 30 days — NPA 305
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 |
|---|---|---|---|---|---|---|---|
| 2004-02-17 | 305-307-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | KEYS | FL |
| 2004-02-03 | 305-307-4XXX | 4000–4999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | KEYS | FL |
| 2003-12-26 | 305-506-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | PERRINE | FL |
| 2003-12-22 | 305-307-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | KEYS | FL |
| 2003-12-19 | 305-200-2XXX | 2000–2999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | MIAMI | FL |
| 2003-12-19 | 305-200-4XXX | 4000–4999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | MIAMI | FL |
| 2003-12-02 | 305-433-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | KEYS | FL |
| 2003-10-07 | 305-351-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | MIAMI | FL |
| 2003-10-07 | 305-415-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | MIAMI | FL |
| 2003-10-07 | 305-428-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | MIAMI | FL |
| 2003-10-03 | 305-938-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | MIAMI | FL |
| 2003-10-03 | 305-938-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | MIAMI | FL |
| 2003-10-03 | 305-938-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | MIAMI | FL |
| 2003-09-23 | 305-434-1XXX | 1000–1999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | KEYS | FL |
| 2003-09-23 | 305-434-3XXX | 3000–3999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | KEYS | FL |
| 2003-08-11 | 305-433-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | KEYS | FL |
| 2003-07-09 | 305-873-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | MIAMI | FL |
| 2003-06-30 | 305-455-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | MIAMI | FL |
| 2003-06-18 | 305-200-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | MIAMI | FL |
| 2003-05-29 | 305-200-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | MIAMI | FL |
| 2003-02-25 | 305-307-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | KEYS | FL |
| 2002-11-06 | 305-506-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | PERRINE | FL |
| 2002-04-30 | 305-307-7XXX | 7000–7999 | Assigned | DSL INTERNET CORPORATION - FL | 9264 | KEYS | FL |
| 2002-03-06 | 305-390-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | KEYS | FL |
| 2002-03-06 | 305-434-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | KEYS | FL |
| 2001-08-23 | 305-433-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | KEYS | FL |
| 2001-08-23 | 305-735-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | KEYS | FL |
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.