# SemrushBot-SI

> Fetches pages for the On Page SEO Checker and similar advisory tools.

| field | value |
|---|---|
| operator | Semrush |
| category | SEO and backlink crawlers |
| robots.txt token | `SemrushBot-SI` |
| user-agent contains | `SemrushBot-SI` |
| robots.txt | obeys robots.txt (documented) |
| verify by | no published verification method |
| published IP ranges | none published |
| prefixes mirrored | 0 IPv4 / 0 IPv6 |
| operator docs | https://www.semrush.com/bot/ |
| last reviewed | 2026-09-01 |

## What blocking it costs you

Nothing user-facing. Semrush customers lose on-page suggestions for pages on your domain.

## Full user-agent string

```
Mozilla/5.0 (compatible; SemrushBot-SI; +http://www.semrush.com/bot.html)
```

## Block it

```
User-agent: SemrushBot-SI
Disallow: /
```

## Allow it

```
User-agent: SemrushBot-SI
Allow: /
```

JSON: https://www.pathwren.workers.dev/crawler/semrushbot-si.json · index: https://www.pathwren.workers.dev/llms.txt