Perplexity-User IP ranges

Name: Perplexity-User IP address ranges
Creator: Perplexity
License: https://www.perplexity.ai/perplexity-user.json

Fetches a page when a Perplexity user asks about it: a user's request rather than a crawl. Perplexity publishes the address ranges Perplexity-User crawls from so sites can tell it from a scraper carrying its name. This is that file, synced daily by the same job that feeds the IP lookup, with the date of the copy and how to check a visitor against it.

Perplexity-User at a glance

Operator	Perplexity
What it does	AI assistant, fetching on a user's behalf
Answered as	crawler: Perplexity-User · crawler_kind: ai_assistant
Published file	https://www.perplexity.ai/perplexity-user.json
Prefixes today	4 IPv4, 0 IPv6
Copy synced	2026-09-12

The ranges

Every prefix in Perplexity's file as of 2026-09-12, IPv4 first, each family in address order. An address inside any of them is Perplexity-User as far as its operator is concerned.

IPv4 · 4

18.97.21.0/30
18.97.43.80/29
34.193.163.52/32
44.208.221.197/32

IPv6 · 0

—

How to verify a visitor is Perplexity-User

Take the request's source address and check it against the prefixes above; the User-Agent header is a claim anyone can type and proves nothing on its own. Perplexity documents the ranges as the way to verify Perplexity-User; a reverse DNS name is not part of its guidance, so do not rely on one.

What the API answers for one of its addresses

A lookup of an address inside these ranges answers is_crawler true, names it in crawler and classes it in crawler_kind. A crawler carries no risk weight, and the datacenter weight is skipped for it: its operator is known and its infrastructure is the point.

curl https://spaw.co/api/v1/ip \
  -H "Authorization: Bearer $SPAW_KEY" \
  -H "Content-Type: application/json" \
  -d '{"ip": "18.97.21.0"}'

"is_crawler": true,
"crawler": "Perplexity-User",
"crawler_kind": "ai_assistant",
"risk_signals": [{ "signal": "datacenter", "weight": 0, "dataset": "datacenter-ranges" }]

A range proves the operator, not intent. Whether Perplexity-User is welcome on a site is a robots.txt decision; this page and the lookup only settle whether a request that says it is Perplexity-User really came from Perplexity.

Other crawlers

crawler-ranges 2026-09-12 · checked 2026-09-13

Wrong result, or is it about you? If this tool said something you think is wrong, tell us and a person reads it. If Spaw is holding data about you and you never signed up here — a customer may have had your address verified, or reported that a message to it bounced — erase it yourself, confirmed by mail to that address and with no account needed.

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The Spaw API answers is_crawler, the crawler's name and its kind for any address, from these ranges and a forward-confirmed reverse DNS check — 10 free lookups a month, no card required.

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