Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
aquariustauchservice.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 17:55:05 UTC · ↺ Refresh
MX Hostnames
- mail.altoport.org
MX Priorities
- mail.altoport.org: 10
A / AAAA Records
- 116.202.199.209 ↩ tih1.altoport.net
Mail Server IPs
- 193.41.226.169 ↩ mail.altoport.org
- 2a0d:5941:1:75e::95e4 ↩ mail.altoport.org
SOA Record
Raw SOA
ns1.altoplan.net hostmaster.altoport.de 2026031600 3600 1800 1209600 900
Primary NS (mname)
ns1.altoplan.net
Admin Email (rname)
hostmaster@altoport.de
Serial
2026031600
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
900s
Nameservers (NS)
ns2.altoplan.net
ns1.altoplan.net
ns3.altoplan.net
SPF Record
✓ Soft Fail (~all)
v=SPF1 mx ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=SPF1 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 aquariustauchservice.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits