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https://ionos.de

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
87
GRADE
B
FIX
1
REVIEW
3
PASS
5
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
5 PASS 3 REVIEW 1 FIX
D
CDN & Delivery
Action
No CDN detected
FIX
No CDN detected
Warning::
No CDN detected
A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN detected

Consider using a CDN to improve global delivery speed and reduce origin load.

C
IPv6 Readiness
Action
No IPv6 support
REVIEW
No IPv6 support
Info::
No IPv6 (AAAA) records found
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No IPv6 Support
About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

B
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
REVIEW
www/non-www, trailing slash, HTTP→HTTPS
Critical::
Both www and non-www versions serve content
Got: Both variants return 200 Expected: One variant 301-redirects to the other
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.ionos.de/
200https://ionos.de/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://ionos.de/ → https://ionos.de/

Consistent

B
TLS Certificate Expiry & Recommendations
235 days until leaf cert expires — 5 issues to address
REVIEW

Certificate validity

235
days left
0d 30d 60d 90d+

Recommended actions

  • Prefer TLS 1.3 — TLS 1.2 is acceptable but TLS 1.3 removes RSA key exchange and improves latency
  • Add includeSubDomains to the HSTS directive
  • Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
  • Enable DNSSEC on your domain for DNS spoofing protection
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+
DNS Records
2 A records, 70 ms lookup
PASS
2 A records, 70 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 217.160.86.49, 217.160.86.51
Info::
No IPv6 (AAAA) records
Info::
4 nameserver(s) configured
Got: ns-1and1.ui-dns.biz, ns-1and1.ui-dns.com, ns-1and1.ui-dns.de, ns-1and1.ui-dns.org
Info::
2 mail exchanger(s) configured
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
SPF record present in TXT
Info::
DNS resolution time: 70 ms
Got: 70 ms
A217.160.86.49, 217.160.86.51
AAAA—
CNAME—
NSns-1and1.ui-dns.biz, ns-1and1.ui-dns.com, ns-1and1.ui-dns.de, ns-1and1.ui-dns.org
MX
10 mxint02.1and1.com
10 mxint01.1and1.com
TXT
wpnv3wbbchbnlysjtlmmd1tj0jkm21kw
_telesec-domain-validation=358289_2026-02-19_uugDsIhhuZTo8xyUxnp5LImlwMSoQ5UD6v7...
_telesec-domain-validation=356756_2026-01-19_hjGhLZGLoDOmzPjUeUFTxBhM2vsWUIKoEy3...
kbg30nzk7lyxq4xqrz9db9c2r9ljzss6
c5b576szrwprgfj7dt064jsc2hk50prp
globalsign-domain-verification=c5aa998f9778b35c3da32dbb6baa3a7e
google-site-verification=dA1Y8wnCkeBm3E0njx6kDREOOCFNwyYh7_8lDtUkIbo
SPF v=spf1 redirect=_spf-corporate.ionos.com
y62slmnvrymd6t9b8dxkszr8nfgh17c5
c6ly78zs5949h1p92qnlg85bdg4t41jj
google-site-verification=MO-KgJpyE5PbWnpsJH7DtRnI2NRbNixrdno74TDQBLc
globalsign-domain-verification=F6A0EB067AAA6A2009DAFA1EEE873319
google-site-verification=QBNdJBkQf5rJLQ00q0oA3RVxwcFa-4lozN_UMxk4PDs
_4bcrxyd5c27f5gkurcm78061slmzi8j
facebook-domain-verification=8rlr75mi1gdn3pgo9wcqeagy1hk0ow
dwgv68r9y354986dmp74wxlyvj06t8cr
97b2wftzdtjjn1gn6mrqy16cgcfclfxh
6/24k1PzgjP8W5XBBm4Xdg5tZUe/1c2Z6alcdMESg7vRWElo5WThgyYoT9dJbyckpEWnnMPgwwP9gpiK...
CAALookup not available with standard resolver
Resolved in 70 ms

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

A
Redirect Chain
1 redirect(s), 304 ms total
PASS
1 redirect(s), 304 ms total
Info::
Single redirect
Got: https://ionos.de → https://www.ionos.de/ (301)
Info::
WWW normalization redirect

https://ionos.de

123 ms · HTTP/1.1

301

https://www.ionos.de/

181 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://ionos.de301123 msHTTP/1.1Apache
2https://www.ionos.de/200181 msHTTP/1.1Apache

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 275 URLs
PASS
robots.txt present, sitemap with 275 URLs
Info::
robots.txt is present
Got: 449 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 275 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 449 B Sitemaps referenced 1 User-agents msnbot, dotbot, kinshoo, *, Slurp Blocking No — crawling allowed
Sitemap: https://www.ionos.de/sitemap.xml

User-agent: *

#print
Disallow: /details-print

#terms and conditions
Disallow: /terms-

#Popups etc.
Disallow: /details-
Disallow: /popup
Disallow: /Feature
Disallow: /*-popup$

#Results
Allow: /server-configurator
Disallow: /domaincheckresult
Disallow: /tariffselect

#crawl delay
User-agent: Slurp
Crawl-delay: 300

User-agent: msnbot
Crawl-delay: 300

User-agent: dotbot
User-agent: kinshoo
Disallow: /
sitemap.xml 200 OK
Type URL Set URLs 275 entries Valid XML Yes
Sample URLs:
A+
Domain Intelligence
ionos.de — hosted on IONOS
PASS
ionos.de — hosted on IONOS
Warning::
Registrar lock is NOT enabled
The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.
Info::
Hosting: IONOS
Got: AS8560
Domain expiry

Unknown

SSL certificate

235 days

Issued by Sectigo Limited

Domain age

Unknown

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

IONOS

ASN AS8560

217.160.86.51

Registrar

Registrar unknown

Unlocked Name servers unknown
Expiry timeline
Today
+1 year
SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar
Hosting
IP Address 217.160.86.51
ASN AS8560 (IONOS-AS This is the joint network for IONOS, Fasthosts, Arsys, 1&1 Mail and Media and 1&1 Telecom. Formerly known as 1&1 Internet SE., DE)
Provider IONOS
Data source: whois (0.9s)

The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.

Why this matters

Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.

Learn more ▾

Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.

Source: ICANN / domain-security best practice

A+
HTTP Probe Timing
Total 169 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
35 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
25 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
79 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
169 ms
Total Time Total request time from DNS lookup through full response.
170 ms

Connection waterfall

DNS Lookup 35 ms TCP Connect 25 ms TLS Handshake 79 ms Server Processing 29 ms Content Transfer 0 ms
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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