Domain lookup
1und1.de
Hosted by IONOS SE (AS8560) in Germany · Tranco rank #4,024 · 🇫🇷 Top 500K in France
Hosting
2001:8d8:5ff:7::1:3AS8560 IONOS SE · 🇩🇪 Germany · —
217.160.72.6AS8560 IONOS SE · 🇩🇪 Germany · Clean
Technologies
Web serverCloudflare
CDN / protectionCloudflare
ProtocolTLS 1.3 · HTTP/2
Security headersHSTS 6+ months CSP Frame protection nosniff Referrer-Policy
SourceHome page probe · 4 Oct 2026 · statistics · about this probe
DNS records
Name serversIONOS
ns-1and1.ui-dns.biz
ns-1and1.ui-dns.com
ns-1and1.ui-dns.de
ns-1and1.ui-dns.org
ns-1and1.ui-dns.biz
ns-1and1.ui-dns.com
ns-1and1.ui-dns.de
ns-1and1.ui-dns.org
Mail servers10 mxint01.1and1.com
10 mxint02.1and1.com
10 mxint02.1and1.com
SPFv=spf1 include:_spf.1und1.de include:_uicsspf.1und1.de include:_spf.zimpel.de include:spf.protection.outlook.com -all
DMARCv=DMARC1;p=quarantine;sp=quarantine;pct=100;rua=mailto:7f750aff40@rua.easydmarc.eu;ri=86400;aspf=r;adkim=r
Other popular domains on 217.160.72.6
einsundeins.de.de registry
1and1.de.de registry
1und.de.de registry
Known domains: the Tranco top 1M (most popular sites worldwide), the sites most visited in 238 countries (Chrome UX Report), every active .fr domain (AFNIC open data), every .nu, .ee, .se, .ch, .li, .sk domain (registry zone files), every domain of 1021 generic TLDs such as .org, .pro, .cloud (ICANN CZDS zone files) and domains seen in new certificates (Certificate Transparency logs, .com and .net included, collected since 30 September 2026), resolved regularly — updated continuously, last update 2026-10-09. Not exhaustive: other sites may share this address.
From our weekly resolution of the Tranco top 1M (last run 2026-10-03). JSON: /domain/1und1.de?format=json