NumberResearchRecent thousands-block assignments
11 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 573
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 |
|---|---|---|---|---|---|---|---|
| 2013-07-12 | 573-388-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | CAPEGIRARD | MO |
| 2013-07-09 | 573-664-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FARMINGTON | MO |
| 2013-06-06 | 573-397-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2013-05-22 | 573-305-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRCH TREE | MO |
| 2013-05-21 | 573-721-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | MEXICO | MO |
| 2013-05-14 | 573-469-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | JEFFERSNCY | MO |
| 2013-05-14 | 573-521-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | NEW MADRID | MO |
| 2013-05-06 | 573-514-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | COLUMBIA | MO |
| 2013-05-03 | 573-554-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | COLUMBIA | MO |
| 2013-04-25 | 573-590-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FULTON | MO |
| 2013-04-12 | 573-273-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | ADVANCE | MO |
| 2013-04-12 | 573-273-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | ADVANCE | MO |
| 2013-04-12 | 573-975-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | MEXICO | MO |
| 2013-04-12 | 573-975-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | MEXICO | MO |
| 2013-04-10 | 573-350-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | DELTA | MO |
| 2013-04-10 | 573-350-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | DELTA | MO |
| 2013-04-10 | 573-391-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | PORTAGEVL | MO |
| 2013-04-10 | 573-603-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | HANNIBAL | MO |
| 2013-04-10 | 573-755-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | JACKSON | MO |
| 2013-04-10 | 573-846-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | PERRYVILLE | MO |
| 2013-04-09 | 573-203-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | SENATH | MO |
| 2013-04-09 | 573-203-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | SENATH | MO |
| 2013-04-09 | 573-264-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | SCOTT CITY | MO |
| 2013-04-09 | 573-264-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | SCOTT CITY | MO |
| 2013-04-09 | 573-266-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | OAK RIDGE | MO |
| 2013-04-09 | 573-266-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | OAK RIDGE | MO |
| 2013-04-09 | 573-328-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | QULIN | MO |
| 2013-04-09 | 573-328-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | QULIN | MO |
| 2013-04-09 | 573-343-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | PUXICO | MO |
| 2013-04-09 | 573-343-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | PUXICO | MO |
| 2013-04-09 | 573-352-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | POCAHONTAS | MO |
| 2013-04-09 | 573-352-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | POCAHONTAS | MO |
| 2013-04-09 | 573-371-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | HOLCOMB | MO |
| 2013-04-09 | 573-371-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | HOLCOMB | MO |
| 2013-04-09 | 573-376-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | HORNERSVL | MO |
| 2013-04-09 | 573-376-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | HORNERSVL | MO |
| 2013-04-09 | 573-390-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | OLDAPPLETN | MO |
| 2013-04-09 | 573-390-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | OLDAPPLETN | MO |
| 2013-04-09 | 573-391-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | PORTAGEVL | MO |
| 2013-04-09 | 573-391-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | PORTAGEVL | MO |
| 2013-04-09 | 573-394-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | RISCO | MO |
| 2013-04-09 | 573-394-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | RISCO | MO |
| 2013-04-09 | 573-401-3XXX | 3000–3999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | ST MARYS | MO |
| 2013-04-09 | 573-401-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | ST MARYS | MO |
| 2013-04-09 | 573-403-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | WYATT | MO |
| 2013-04-09 | 573-403-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | WYATT | MO |
| 2013-04-09 | 573-545-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | BENTON | MO |
| 2013-04-09 | 573-545-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | BENTON | MO |
| 2013-04-09 | 573-599-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | TUSCUMBIA | MO |
| 2013-04-09 | 573-599-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | TUSCUMBIA | MO |
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.