NumberResearchRecent thousands-block assignments
6 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 901
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
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2005-10-25 | 901-287-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MEMPHIS | TN |
| 2005-10-25 | 901-288-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MEMPHIS | TN |
| 2005-10-25 | 901-288-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MEMPHIS | TN |
| 2005-10-25 | 901-288-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MEMPHIS | TN |
| 2005-10-25 | 901-288-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MEMPHIS | TN |
| 2005-10-25 | 901-288-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MEMPHIS | TN |
| 2005-10-25 | 901-288-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MEMPHIS | TN |
| 2005-10-25 | 901-288-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MEMPHIS | TN |
| 2005-10-25 | 901-361-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MEMPHIS | TN |
| 2005-10-18 | 901-215-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | MEMPHIS | TN |
| 2005-10-11 | 901-261-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | MEMPHIS | TN |
| 2005-10-07 | 901-515-3XXX | 3000–3999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MEMPHIS | TN |
| 2005-09-27 | 901-239-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | MEMPHIS | TN |
| 2005-09-19 | 901-239-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | MEMPHIS | TN |
| 2005-09-15 | 901-471-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLLIERVL | TN |
| 2005-08-17 | 901-389-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ARLINGTON | TN |
| 2005-08-17 | 901-389-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ARLINGTON | TN |
| 2005-08-17 | 901-389-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ARLINGTON | TN |
| 2005-08-05 | 901-288-1XXX | 1000–1999 | Assigned | LEVEL 3 TELECOM OF TENNESSEE, LLC - TN | 7517 | MEMPHIS | TN |
| 2005-08-05 | 901-288-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF TENNESSEE, LLC - TN | 7517 | MEMPHIS | TN |
| 2005-07-11 | 901-287-4XXX | 4000–4999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MEMPHIS | TN |
| 2005-07-11 | 901-287-5XXX | 5000–5999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MEMPHIS | TN |
| 2005-07-11 | 901-287-6XXX | 6000–6999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MEMPHIS | TN |
| 2005-07-11 | 901-287-7XXX | 7000–7999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MEMPHIS | TN |
| 2005-07-11 | 901-287-8XXX | 8000–8999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MEMPHIS | TN |
| 2005-06-29 | 901-435-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF TENNESSEE, LLC - TN | 7517 | MEMPHIS | TN |
| 2005-06-29 | 901-435-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF TENNESSEE, LLC - TN | 7517 | MEMPHIS | TN |
| 2005-06-23 | 901-592-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ARLINGTON | TN |
| 2005-06-21 | 901-881-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | MEMPHIS | TN |
| 2005-06-21 | 901-881-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | MEMPHIS | TN |
| 2005-06-21 | 901-881-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | MEMPHIS | TN |
| 2005-06-21 | 901-881-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | MEMPHIS | TN |
| 2005-06-01 | 901-687-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ARLINGTON | TN |
| 2005-05-03 | 901-414-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLLIERVL | TN |
| 2005-05-03 | 901-592-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ARLINGTON | TN |
| 2005-05-03 | 901-592-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ARLINGTON | TN |
| 2005-05-02 | 901-435-1XXX | 1000–1999 | Assigned | LEVEL 3 TELECOM OF TENNESSEE, LLC - TN | 7517 | MEMPHIS | TN |
| 2005-03-29 | 901-701-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF TENNESSEE, LLC - TN | 7517 | MEMPHIS | TN |
| 2005-03-29 | 901-701-9XXX | 9000–9999 | Assigned | LEVEL 3 TELECOM OF TENNESSEE, LLC - TN | 7517 | MEMPHIS | TN |
| 2005-03-15 | 901-531-6XXX | 6000–6999 | Assigned | LEVEL 3 TELECOM OF TENNESSEE, LLC - TN | 7517 | MEMPHIS | TN |
| 2005-03-15 | 901-531-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF TENNESSEE, LLC - TN | 7517 | MEMPHIS | TN |
| 2005-03-03 | 901-457-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | COLLIERVL | TN |
| 2005-03-03 | 901-457-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | COLLIERVL | TN |
| 2005-02-28 | 901-282-5XXX | 5000–5999 | Assigned | CELLULAR SOUTH, INC. | 6581 | MEMPHIS | TN |
| 2005-02-28 | 901-282-6XXX | 6000–6999 | Assigned | CELLULAR SOUTH, INC. | 6581 | MEMPHIS | TN |
| 2005-02-28 | 901-282-7XXX | 7000–7999 | Assigned | CELLULAR SOUTH, INC. | 6581 | MEMPHIS | TN |
| 2005-02-28 | 901-282-8XXX | 8000–8999 | Assigned | CELLULAR SOUTH, INC. | 6581 | MEMPHIS | TN |
| 2005-02-28 | 901-282-9XXX | 9000–9999 | Assigned | CELLULAR SOUTH, INC. | 6581 | MEMPHIS | TN |
| 2005-01-31 | 901-881-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | MEMPHIS | TN |
| 2005-01-27 | 901-867-5XXX | 5000–5999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | ARLINGTON | TN |
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.