Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
pinguin-singers.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 10:32:02 UTC · ↺ Refresh
MX Hostnames
- curie.clho.de
MX Priorities
- curie.clho.de: 10
A / AAAA Records
- 152.53.12.182 ↩ curie.clho.de
- 2a03:4000:6b:52::1 ↩ curie.clho.de
Mail Server IPs
- 152.53.12.182 ↩ curie.clho.de
- 2a03:4000:6b:52::1 ↩ curie.clho.de
SOA Record
Raw SOA
ns1.clho.de hostmaster.inwx.de 2026032211 10800 3600 604800 3600
Primary NS (mname)
ns1.clho.de
Admin Email (rname)
hostmaster@inwx.de
Serial
2026032211
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns3.clho.de
ns2.clho.de
ns1.clho.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.mailjet.com a mx -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; aspf=s; adkim=s;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 include:spf.mailjet.com a mx -all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for pinguin-singers.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits