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 |
|---|---|---|---|---|---|---|
| 2015-07-17 | 812-908 | 1XXX2XXX5XXX6XXX · 4 holders which blocks → | COMCAST IP PHONE, LLC | 318J | ELLETTSVL | IN |
| 2010-10-26 | 812-210 | 0XXX5XXX · 2 holders which blocks → | COMCAST IP PHONE, LLC | 318J | GOSPORT | IN |
| 2010-10-22 | 812-300 | not yet reported which blocks → | COMCAST IP PHONE, LLC | 318J | ELLETTSVL | IN |
| 2010-10-22 | 812-400 | not yet reported which blocks → | COMCAST IP PHONE, LLC | 318J | STANFORD | IN |
| 2010-10-22 | 812-500 | not yet reported which blocks → | COMCAST IP PHONE, LLC | 318J | SMITHVILLE | IN |
| 2010-10-22 | 812-600 | not yet reported which blocks → | COMCAST IP PHONE, LLC | 318J | LYONS | IN |
| 2009-11-03 | 812-566 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 7 holders which blocks → | COMCAST IP PHONE, LLC | 318J | TELL CITY | IN |
| 2008-06-13 | 812-905 | 0XXX8XXX · 2 holders which blocks → | COMCAST IP PHONE, LLC | 318J | SULLIVAN | IN |
| 2005-09-07 | 812-822 | 0–9 XXXall 10 · 4 holders which blocks → | COMCAST IP PHONE, LLC | 318J | BLOOMINGTN | IN |
| 2005-04-21 | 812-799 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | COMCAST IP PHONE, LLC | 318J | COLUMBUS | IN |
| — | 812-577 | 0–9 XXXall 10 · 4 holders which blocks → | COMCAST IP PHONE, LLC | 318J | LAWRENCEBG | 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.