Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
asta.tu-berlin.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-03 14:10:10 UTC · ↺ Refresh
MX Hostnames
- a1861.mx.srv.dfn.de
- c1861.mx.srv.dfn.de
- b1861.mx.srv.dfn.de
MX Priorities
- a1861.mx.srv.dfn.de: 10
- c1861.mx.srv.dfn.de: 10
- b1861.mx.srv.dfn.de: 10
A / AAAA Records
- 130.149.0.170 ↩ asta.tu-berlin.de
Mail Server IPs
- 194.95.232.130 ↩ a1861.mx.srv.dfn.de
- 194.95.238.130 ↩ c1861.mx.srv.dfn.de
- 194.95.234.130 ↩ b1861.mx.srv.dfn.de
SOA Record
Raw SOA
ns.tu-berlin.de noc.tu-berlin.de 3000000056 21600 3600 2592000 900
Primary NS (mname)
ns.tu-berlin.de
Admin Email (rname)
noc@tu-berlin.de
Serial
3000000056
Refresh
21600s
Retry
3600s
Expire
2592000s
Minimum TTL
900s
Nameservers (NS)
ns.tu-berlin.de
SPF Record
✓ Strict (-all)
v=spf1 a mx a:exchange.tu-berlin.de a:asta.tu-berlin.de -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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 a mx a:exchange.tu-berlin.de a:asta.tu-berlin.de -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 asta.tu-berlin.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits