Verified Bots Directory

Directory / SEO tools

LinkCheckerBot

Fully verifiable

LinkChecker.pro's backlink-monitoring crawler. It revisits the backlinks that the service's customers track, checking whether each link is still present and how it is marked. The operator documents that the crawler strictly respects robots.txt and Crawl-delay, and publishes the addresses it crawls from.

Operated by Local Profy LLC (LinkChecker.pro) · Official documentation

User agents

Patterns this directory matches, with real observed strings.

  • regexLinkCheckerBot/[\d.]+
  • observedMozilla/5.0 (compatible; LinkCheckerBot/2.0; +https://linkchecker.pro/robot/)

How to verify

Fetch the official IP range feed

curl -s https://linkchecker.pro/robot-ips

IP ranges (4)

Refreshed daily from the operator's feed. Also available as /data/ips/linkcheckerbot.ips and /data/bots/linkcheckerbot.json.

135.181.4.247/32
46.4.94.146/32
65.21.142.87/32
95.217.230.117/32

Good Bot Practices scorecard

  • Identifies honestly

    Stable UA token documented (1 pattern)

  • Verifiable

    Fully verifiable

  • Respects robots.txt

    Honors robots.txt (token: LinkCheckerBot)

  • Behaves

    Crawl-rate behavior is operator-declared; not machine-verifiable from this dataset

  • Reachable operator

    Operator and documentation published

Measured against the Good Bot Practices.