NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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 |
|---|---|---|---|---|---|---|
| 2022-09-02 | 651-498 | 0XXX1XXX3XXX8XXX · 4 holders which blocks → | COMCAST IP PHONE, LLC | 318J | STILLWATER | MN |
| 2020-02-14 | 651-374 | 0–9 XXXall 10 · 3 holders which blocks → | COMCAST IP PHONE, LLC | 318J | TWINCITIES | MN |
| 2019-02-04 | 651-370 | 0–9 XXXall 10 · 3 holders which blocks → | COMCAST IP PHONE, LLC | 318J | TWINCITIES | MN |
| 2014-12-05 | 651-571 | 0–9 XXXall 10 · 6 holders which blocks → | COMCAST IP PHONE, LLC | 318J | STILLWATER | MN |
| 2002-04-15 | 651-340 | not yet reported which blocks → | COMCAST IP PHONE, LLC | 318J | TWINCITIES | MN |
| 2001-10-02 | 651-330 | not yet reported which blocks → | COMCAST IP PHONE, LLC | 318J | TWINCITIES | MN |
| — | 651-289 | not yet reported which blocks → | COMCAST IP PHONE, LLC | 318J | TWINCITIES | MN |
| — | 651-337 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | COMCAST IP PHONE, LLC | 318J | STCROIXBCH | MN |
| — | 651-342 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | COMCAST IP PHONE, LLC | 318J | STILLWATER | MN |
| — | 651-493 | not yet reported which blocks → | COMCAST IP PHONE, LLC | 318J | TWINCITIES | MN |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.