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 |
|---|---|---|---|---|---|---|
| 2022-03-22 | 620-889 | 0XXX5XXX8XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | HESSTON | KS |
| 2022-03-22 | 620-945 | 0XXX1XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | GIRARD | KS |
| 2022-03-16 | 620-929 | 0XXX1XXX2XXX3XXX4XXX8XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SUBLETTE | KS |
| 2022-03-09 | 620-696 | 0XXX1XXX6XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | STAFFORD | KS |
| 2022-03-09 | 620-883 | 0XXX1XXX3XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | READING | KS |
| 2022-03-09 | 620-997 | 0XXX2XXX7XXX8XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | SEVERY | KS |
| 2022-03-08 | 620-828 | 0XXX1XXX2XXX3XXX8XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | PEABODY | KS |
| 2022-03-04 | 620-998 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 8 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | NICKERSON | KS |
| 2022-03-03 | 620-949 | 0XXX1XXX4XXX8XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ANTHONY | KS |
| 2022-03-03 | 620-989 | 0XXX8XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MURDOCK | KS |
| 2022-03-01 | 620-686 | 0XXX8XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | LARNED | KS |
| 2022-03-01 | 620-847 | 7XXX which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MULLINVL | KS |
| 2022-03-01 | 620-969 | 0XXX6XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MAPLETON | KS |
| 2022-02-24 | 620-773 | 0XXX3XXX7XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | HUDSON | KS |
| 2022-02-24 | 620-996 | 0XXX6XXX9XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | HOISINGTON | KS |
| 2022-02-23 | 620-774 | 0XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | HARTFORD | KS |
| 2022-02-18 | 620-722 | 0XXX1XXX2XXX4XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | FLORENCE | KS |
| 2022-02-18 | 620-866 | 0XXX1XXX6XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | GREENSBURG | KS |
| 2022-02-17 | 620-737 | 0XXX7XXX8XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | BUFFALO | KS |
| 2022-02-17 | 620-776 | 0XXX6XXX7XXX · 3 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CONWAY | KS |
| 2022-02-17 | 620-932 | 0XXX1XXX3XXX7XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ERIE | KS |
| 2022-01-14 | 620-744 | 4XXX6XXX · 2 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | NASHVILLE | KS |
| 2022-01-13 | 620-942 | 6XXX which blocks → | TON80 COMMUNICATIONS, LLC | 516J | ATLANTA | 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.