How privacy works
Private lookups are not added to public searches, stored reports or change history. This does not remove a report that was already public. Your choice lasts for this browser session.
Who hosts schwarzhaustechnik.de?
Answer
schwarzhaustechnik.de uses the IONOS network; the hosting company is unconfirmed.
Checked 4 hours ago from Cloudflare DUS in 157 ms. This is a saved result.
What needs attention
Prioritized observations from this check. Review changes with whoever manages the website.
- Review
HTTP does not redirect to HTTPS
The HTTP check returned content without switching to HTTPS.
Next step: Configure a permanent HTTP-to-HTTPS redirect at the CDN or web server.
- Improve
DMARC is in monitoring mode
The published p=none policy does not request rejection or quarantine of failing messages.
Next step: Review DMARC reports and SPF/DKIM alignment before considering a stricter policy.
- Improve
Review browser security headers
Strict-Transport-Security, Content-Security-Policy, Clickjacking protection, X-Content-Type-Options, Referrer-Policy, Permissions-Policy did not meet the conservative header checks. This is not a complete security audit.
Next step: Review these headers with the site developer and test policy changes before enforcing them.
- Good to know
Only the network operator is identified
The visible IP network is known, but no hosting-specific evidence confirms the company or reseller serving the site.
Next step: Use the evidence as a network attribution and verify the hosting provider with the website owner if needed.
Evidence by layer
The company operating a network and the company selling the hosting can be different.
Network operators
IONOS
Network ownership alone does not confirm the retail hosting provider.
How we know
- 217.160.0.47 belongs to AS8560 (IONOS), reverse DNS 217-160-0-47.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::280 belongs to AS8560 (IONOS), reverse DNS 2001-08d8-100f-f000-0000-0000-0000-0280.elastic-ssl.ui-r.com
Servers
The addresses the name points to and the networks that own them.
- 217.160.0.47IONOS
- 2001:8d8:100f:f000::280IONOS
Reachable over IPv6.
Website
What the site answered when we visited its home page.
- Status
- 200 OK
- Address
- https://schwarzhaustechnik.de/
- Page title
- Schwarz Haustechnik - Ihr Fachbetrieb für Heizung, Sanitär und Elektro
- HTTPS
- Yes, but http:// does not redirect to https://
- HTTP/3
- Not advertised
- Response time
- 135 ms from Cloudflare DUS
Security headers
- Strict-Transport-Security
- Content-Security-Policy
- Clickjacking protection
- X-Content-Type-Options
- Referrer-Policy
- Permissions-Policy
DNS
Who answers for the domain name, and its records.
- DNS provider
- IONOS
- Name servers
- ns1022.ui-dns.com
ns1060.ui-dns.org
ns1078.ui-dns.biz
ns1089.ui-dns.de - Zone
- schwarzhaustechnik.de
- DNSSEC
- Not signed
- Certificates
- Any certificate authority (no CAA record)
All DNS records (9)
| Type | Name | Value | TTL |
|---|---|---|---|
| A | schwarzhaustechnik.de | 217.160.0.47 | 3600 |
| AAAA | schwarzhaustechnik.de | 2001:8d8:100f:f000::280 | 3600 |
| NS | schwarzhaustechnik.de | ns1078.ui-dns.biz | 86400 |
| NS | schwarzhaustechnik.de | ns1022.ui-dns.com | 86400 |
| NS | schwarzhaustechnik.de | ns1060.ui-dns.org | 86400 |
| NS | schwarzhaustechnik.de | ns1089.ui-dns.de | 86400 |
| MX | schwarzhaustechnik.de | 10 mx00.ionos.de | 3600 |
| MX | schwarzhaustechnik.de | 10 mx01.ionos.de | 3600 |
| TXT | schwarzhaustechnik.de | v=spf1 include:_spf-eu.ionos.com ~all | 3600 |
Partly protected: DMARC is set to monitoring only.
- Mailbox provider
- IONOS
- Mail servers
- 10 mx00.ionos.de
10 mx01.ionos.de - Allowed senders
- IONOS
- SPF
- Mail from other servers is marked as suspicious.
- DMARC
- Monitoring only — spoofed mail is still delivered.
- MTA-STS
- Not enabled
SPF and DMARC records
v=spf1 include:_spf-eu.ionos.com ~all
v=DMARC1; p=none;
Domain registration
The .de registry does not publish RDAP data.
Observed changes
A compact record of what changed between public checks. Rechecks happen only when someone requests them.
History starts with saved public observations. No earlier changes are inferred.
Something look wrong? Report an incorrect result
Tell us which result needs a second look. Reports are reviewed privately and do not change detection automatically. Please do not include personal or confidential information.
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