+++
title = "Supported AS Path Patterns"
+++
{{ branding.site_name }} accepts the following `AS_PATH` regular expression patterns:

| Expression               |                                                 Match |
| :----------------------- | ----------------------------------------------------: |
| `_65000$`                |                                 Originated by AS65000 |
| `^65000\_`               |                                 Received from AS65000 |
| `_65000_`                |                                           Via AS65000 |
| `_65000_65001_`          |                               Via AS65000 and AS65001 |
| `_65000(_.+_)65001$`     |     Anything from AS65001 that passed through AS65000 |