NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
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 |
|---|---|---|---|---|---|---|
| 2021-04-26 | 219-274 | 0–9 XXXall 10 · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | CROWNPOINT | IN |
| 2021-03-25 | 219-273 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | HIGHLAND | IN |
| 2012-02-07 | 219-212 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | MEDARYVL | IN |
| 2012-02-07 | 219-215 | 0–9 XXXall 10 · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | LAKE VLG | IN |
| 2006-02-09 | 219-440 | 0–9 XXXall 10 · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | DYER | IN |
| 2006-01-25 | 219-525 | 0–9 XXXall 10 · 8 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | MERRILLVL | IN |
| 2005-03-16 | 219-488 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | CROWNPOINT | IN |
| 2004-04-07 | 219-224 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | BROOK | IN |
| 2004-03-15 | 219-472 | 0–9 XXXall 10 · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | MERRILLVL | IN |
| 2003-01-21 | 219-227 | 0–9 XXXall 10 · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | DYER | IN |
| 2002-06-25 | 219-507 | 7XXX8XXX which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | WHEATFIELD | IN |
| 2002-06-25 | 219-915 | 1XXX2XXX4XXX5XXX8XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | REMINGTON | IN |
| 2002-06-04 | 219-990 | 1XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | REMINGTON | IN |
| 2002-05-10 | 219-964 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | RENSSELAER | IN |
| 2002-04-16 | 219-390 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | CEDAR LAKE | IN |
| 2002-01-10 | 219-951 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | GARY | IN |
| 2001-11-08 | 219-803 | 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | HAMMOND | IN |
| 2001-10-09 | 219-310 | 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | CROWNPOINT | IN |
| — | 219-232 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | CEDAR LAKE | IN |
| — | 219-695 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | LOWELL | IN |
| — | 219-697 | 0XXX1XXX3XXX6XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | MOROCCO | IN |
| — | 219-714 | 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | MERRILLVL | IN |
| — | 219-979 | 1XXX7XXX8XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | GARY | IN |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.