zoner.com security report

Certificate, security headers, email authentication, DNS, registration, and exposed hosts — from public sources.

37risk

Moderate

Some surface to tighten, nothing urgent.

0Critical

0High

4Medium

1Low

2Info

Collected 16 hours ago20.0sfrom cache

Certificate Transparency
DNS resolution1
Network ownership0
CDN / WAF detection0
Exposed ports & CVEs3
Registration
DNS posture3
Email authentication2
Certificate
Security headers4
Archived URLs
Analysis7

noteCertificate Transparency did not complete (HTTP 404). Results below are partial.
noteCertificate inspection is unavailable in this runtime.
noteNetwork ownership lookup is unavailable in this runtime; ASN and org are omitted.
noteCDN/WAF detection is unavailable in this runtime.

FTP transmits credentials in cleartext.
What to do
Restrict 21/tcp to a VPN, bastion, or allow-listed source range.
asset: 217.198.122.203:21
CSP is the main defence that limits what an injected script can do. Without it, any XSS bug is fully exploitable.
What to do
Start with a report-only policy, tighten it against the reports, then enforce.
asset: https://www.zoner.com/
No X-Frame-Options or CSP frame-ancestors directive, so another site can load this page invisibly inside its own and trick users into clicking.
What to do
Send `X-Frame-Options: DENY` or `Content-Security-Policy: frame-ancestors ’none’`.
asset: https://www.zoner.com/
The record ends in ?all, so a spoofed message is neither passed nor failed and most receivers let it through.
What to do
End the record with -all (or ~all while you validate your senders).
asset: zoner.com
217.198.122.203 (zoner.com) reports internet information services 10.0. Publishing precise versions lets anyone match the host against a CVE feed without probing it, which is how targets get shortlisted for mass exploitation after a new advisory lands.
What to do
Suppress version tokens in server banners (for example `ServerTokens Prod` in Apache) and keep the packages current.
asset: 217.198.122.203
Mail to this domain can be downgraded to plaintext by an on-path attacker, because senders have no way to know TLS is required.
What to do
Publish an MTA-STS policy (a TXT record plus a small HTTPS-hosted file).
asset: zoner.com
Any public certificate authority may issue certificates for this domain. CAA lets you name the ones allowed to.
What to do
Add a CAA record naming your CA, e.g. `0 issue "letsencrypt.org"`.
asset: zoner.com

final https://www.zoner.com/status 200time 2392msstack cloudflare

✓http:// redirects to https://
✓Strict-Transport-Security
max-age=31536000
✗Content-Security-Policy
✗Clickjacking protection
✓X-Content-Type-Options
nosniff
✓Referrer-Policy
strict-origin
✓Permissions-Policy
geolocation=(self), fullscreen=(self)
–security.txt publishedoptional — tells researchers where to report bugs

✓Receives mail via 3 servers
10mx.zoner.com 15mx.zoner.com relay.zoner.com
!SPFends in ?all
v=spf1 include:spf-zoner-corp.zoner.com include:_spf.google.com include:spf-joker.zoner.com ?all
✓DMARCp=quarantine
v=DMARC1; p=quarantine; rua=mailto:dmarc-reports@zoner.com
!MTA-STSinbound mail can be downgraded to plaintext

✓DNSSECanswers are signed and validated
–CAAany CA may issue
✓IPv6 (AAAA)
✓3 nameservers
ns1.regzone.cz ns1.regzone.de ns1.regzone.info

✓Registered with CSL Computer Service Langenbach GmbH d/b/a joker.com24.2 years old
zoner.com
✓Registration expiry1388 days
2030-06-26
✓Transfer lock
client transfer prohibited
✓3 nameservers at registry
ns1.regzone.cz ns1.regzone.de ns1.regzone.info

Address	Ports	CVEs	Edge	Network
217.198.122.203 zoner.com +3	2180443	0	direct	—

Archived URLs

Endpoints the Wayback Machine has kept — config files, backups, scripts. Slow to fetch, so it is here on request.

zoner.com security report

Moderate

Findings

Security headers

Email authentication

DNS

Registration

Hosts

Hostnames