Bot signals — Internet scanner
Outpost24 OUTSCAN is an internet scanning project in the IPAPI.GR scanner catalogue. Addresses it publishes or verifiably identifies as its own set risk.is_scanner.
01 — Verification
Only from what Outpost24 OUTSCAN publishes about itself. No third-party blocklists, no behavioural guesses. Live address counts change with every publication, so check the official file for the current list.
risk.is_scanner
02 — In the response
A lookup of a Outpost24 OUTSCAN address sets risk.is_scanner. The flags come with geolocation and network data in the same response, for Pro API keys.
The response says which kind of bot an address belongs to, not which operator. Pair it with the user agent: a request that claims to be Outpost24 OUTSCAN but doesn't match is unverified.
{
// … location and network fields …
"risk": {
"is_ai": false,
"is_crawler": false,
"is_scanner": true
}
}
03 — Questions
Yes. Outpost24 OUTSCAN publishes a list at https://kb.outpost24.com/kb/outpost24-network-scanning-range and https://kb.outpost24.com/kb/firewall-rules, which IPAPI.GR imports directly.
IPAPI.GR re-fetches it every hour. If a refresh fails, the previous entries expire after at most 24 hours instead of being trusted forever.
A matching address sets risk.is_scanner in the lookup response. The risk flags are returned for Pro API keys.
From the blog
Pro: 40,000,000 requests a day with is_ai, is_crawler and is_scanner in every lookup.