AI bots
Perplexity-User: what it is, its IP ranges, and how to block it
Perplexity-User is Perplexity's crawler for AI search and answers.
| Vendor | Perplexity |
|---|---|
| What it is for | AI search and answers |
| In its User-Agent | Perplexity-User |
| Its vendor's address list | https://www.perplexity.com/perplexity-user.json |
| IP ranges | 4 |
It reads a page for an AI's search or for a person who asked an assistant, and can bring visitors. Bot Protection lets it through by default; you can block it.
How to verify it
Any bot can write Perplexity-User in its User-Agent. A request is Perplexity-User only when its address is in Perplexity's published list below: check the address, not the name.
How to block it
With robots.txt, you ask it to stay out:
User-agent: Perplexity-User Disallow: /
robots.txt is a request, not a block, and it cannot tell the real crawler from a bot wearing its name. Bot Protection verifies Perplexity-User by its address on every request and answers it as you choose on the Set-up page, per kind or for Perplexity-User alone; a bot that only wears the name is judged like any other bot.
Its IP ranges
From Perplexity's own list, downloaded again every day.
IPv4
44.208.221.197/32 34.193.163.52/32 18.97.21.0/30 18.97.43.80/29