Recent prefix assignments
334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 337-851 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LAFAYETTE | LA |
| — | 337-853 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | LK CHARLES | LA |
| — | 337-855 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LK CHARLES | LA |
| — | 337-856 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | YOUNGSVL | LA |
| — | 337-857 | 3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | YOUNGSVL | LA |
| — | 337-867 | 7XXX which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | WEEKS IS | LA |
| — | 337-873 | 1XXX5XXX · 2 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | DUSON | LA |
| — | 337-879 | 1XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LEONVILLE | LA |
| — | 337-882 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LK CHARLES | LA |
| — | 337-884 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | LK CHARLES | LA |
| — | 337-885 | not yet reported which blocks → | BRIGHTSPEED OF LOUISIANA, LLC | 0434 | CHATAIGNIR | LA |
| — | 337-886 | 5XXX6XXX8XXX9XXX · 4 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | CARENCRO | LA |
| — | 337-888 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | SULPHUR | LA |
| — | 337-892 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | ABBEVILLE | LA |
| — | 337-893 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | ABBEVILLE | LA |
| — | 337-896 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | CARENCRO | LA |
| — | 337-898 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | ABBEVILLE | LA |
| — | 337-907 | 0XXX3XXX4XXX6XXX9XXX · 4 holders which blocks → | COMCAST IP PHONE, LLC | 318J | FRANKLIN | LA |
| — | 337-911 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | LA |
| — | 337-912 | 4XXX5XXX8XXX9XXX which blocks → | METROPCS, INC. | 5562 | LK CHARLES | LA |
| — | 337-918 | 0–9 XXXall 10 · 8 holders which blocks → | COMCAST IP PHONE, LLC | 318J | ERATH | LA |
| — | 337-920 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LAFAYETTE | LA |
| — | 337-923 | none assigned yet which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | BALDWIN | LA |
| — | 337-924 | 2XXX4XXX6XXX · 2 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | BALDWIN | LA |
| — | 337-935 | 0–9 XXXall 10 · 8 holders which blocks → | COMCAST IP PHONE, LLC | 318J | DUSON | LA |
| — | 337-937 | 3XXX which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | ERATH | LA |
| — | 337-942 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | OPELOUSAS | LA |
| — | 337-943 | 0XXX4XXX8XXX · 2 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | OPELOUSAS | LA |
| — | 337-944 | 0–9 XXXall 10 · 7 holders which blocks → | COMCAST IP PHONE, LLC | 318J | LOREAUVL | LA |
| — | 337-945 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | OPELOUSAS | LA |
| — | 337-948 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | OPELOUSAS | LA |
| — | 337-950 | not yet reported which blocks → | LA | |||
| — | 337-958 | not yet reported which blocks → | LA | |||
| — | 337-959 | not yet reported which blocks → | LA | |||
| — | 337-962 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | LAFAYETTE | LA |
| — | 337-967 | 7XXX8XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | NEW IBERIA | LA |
| — | 337-976 | not yet reported which blocks → | LA | |||
| — | 337-981 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LAFAYETTE | LA |
| — | 337-983 | 4XXX5XXX6XXX8XXX · 2 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LAFAYETTE | LA |
| — | 337-984 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LAFAYETTE | LA |
| — | 337-988 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LAFAYETTE | LA |
| — | 337-989 | 5XXX which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LAFAYETTE | LA |
| — | 337-991 | 1XXX3XXX4XXX5XXX6XXX7XXX which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LAFAYETTE | LA |
| — | 337-993 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LAFAYETTE | LA |
| — | 337-999 | 0–9 XXXall 10 · 6 holders which blocks → | BANDWIDTH.COM CLEC, LLC - LA | 153F | BROUSSARD | LA |
| — | 339-205 | 0–9 XXXall 10 · 7 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | WEYMOUTH | MA |
| — | 339-211 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | MA |
| — | 339-233 | 0–9 XXXall 10 · 4 holders which blocks → | NUSO, LLC | 732J | BRYANTVL | MA |
| — | 339-311 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | MA |
| — | 339-333 | 0–9 XXXall 10 · 7 holders which blocks → | ONVOY, LLC - MA | 892D | LINCOLN | MA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.