IONOS Crawler

Verifiable

IONOS Crawler (IonCrawl) continuously crawls publicly accessible domains to generate insights into how they are used, which IONOS uses to improve and expand its hosting products. IONOS documents reverse-DNS verification and deletes crawled data after 60 days.

Operated by IONOS · Official documentation

User agents

Patterns this directory matches, with real observed strings.

regexIonCrawl
observedIonCrawl (https://www.ionos.de/terms-gtc/faq-crawler-en/)

How to verify

Reverse-DNS check a client IP

dig -x <client-ip> +short   # expect a hostname matching *.1and1.org

Reverse-DNS suffixes: *.1and1.org

Good Bot Practices scorecard

Identifies honestly
Stable UA token documented (1 pattern)
Verifiable
Verifiable
Respects robots.txt
Honors robots.txt (token: IonCrawl)
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.