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 |
|---|---|---|---|---|---|---|
| 2016-04-08 | 913-326 | 0–9 XXXall 10 · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | KANSASCITY | KS |
| 2012-01-30 | 913-210 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | OLATHE | KS |
| 2011-05-27 | 913-241 | 0–9 XXXwhole prefix which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | KANSASCITY | KS |
| 2006-01-12 | 913-232 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | KANSASCITY | KS |
| 2005-02-08 | 913-204 | not yet reported which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | MCLOUTH | KS |
| 2004-12-15 | 913-586 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | DE SOTO | KS |
| 2002-05-14 | 913-674 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | ATCHISON | KS |
| 2002-05-14 | 913-828 | 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | LEAVENWTH | KS |
| 2001-06-21 | 913-933 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | BASEHOR | KS |
| 2001-06-21 | 913-937 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | PAOLA | KS |
| — | 913-440 | 0–9 XXXall 10 · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | OLATHE | KS |
| — | 913-535 | 2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | BONNER SPG | KS |
| — | 913-538 | 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | OLATHE | KS |
| — | 913-548 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | KANSASCITY | KS |
| — | 913-549 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | KANSASCITY | KS |
| — | 913-562 | 0XXX4XXX7XXX8XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | KANSASCITY | KS |
| — | 913-871 | 0–9 XXXwhole prefix which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | KANSASCITY | KS |
| — | 913-904 | 2XXX4XXX6XXX8XXX which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | KANSASCITY | KS |
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.