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Bot signals — Internet scanner

CyberResilience / UpGuard research scanner IP addresses

CyberResilience / UpGuard research is an internet scanning project in the IPAPI.GR scanner catalogue. Addresses it publishes or verifiably identifies as its own set risk.is_scanner.

risk.is_scanner rDNS Reviewed
Official documentation (opens in a new tab) All internet scanners

Check an IP

Is this IP really CyberResilience / UpGuard research?

Checks the address against what CyberResilience / UpGuard research publishes, the same evidence behind risk.is_scanner.

01 — Verification

How IPAPI.GR verifies CyberResilience / UpGuard research.

Only from what CyberResilience / UpGuard research publishes about itself. No third-party blocklists, no behavioural guesses.

CyberResilience / UpGuard research

risk.is_scanner
Method
rDNS Forward-confirmed reverse DNS
Reverse DNS
Hostname pattern: portscanner-…prod.cyberresilience.io, portscanner-…dev.cyberresilience.io. The hostname must then resolve forward to the same address.
Refresh
Checked in the background; a new address can become flagged shortly after its first lookup.

02 — In the response

What a match looks like.

A lookup of a CyberResilience / UpGuard research 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 CyberResilience / UpGuard research but doesn't match is unverified.

GET /api/lookup/{ip}?key=PRO_KEY
{
  // … location and network fields …
  "risk": {
    "is_ai": false,
    "is_crawler": false,
    "is_scanner": true
  }
}

03 — Questions

About CyberResilience / UpGuard research.

How do I verify CyberResilience / UpGuard research with reverse DNS?

Look up the PTR record for the IP address. The hostname must match portscanner-… under prod.cyberresilience.io and match portscanner-… under dev.cyberresilience.io, and a forward lookup of that hostname must return the same IP address. A PTR record alone can be set by anyone who controls the address, so the forward confirmation is the part that matters.

Which risk flag does CyberResilience / UpGuard research set?

A matching address sets risk.is_scanner in the lookup response. The risk flags are returned for Pro API keys.

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