Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
sebastian-rader.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-09-04 18:16:32 UTC · ↺ Refresh
MX Hostnames
- mxe998.netcup.net
- mail.sebastian-rader.de
MX Priorities
- mxe998.netcup.net: 50
- mail.sebastian-rader.de: 10
A / AAAA Records
- 202.61.233.150 ↩ ae996.netcup.net
- 2a03:4000:6d:c3b::24:1330 (no PTR)
Mail Server IPs
- 202.61.233.152 ↩ mxe998.netcup.net
- 2a03:4000:0:5b1:a8e0:70ff:fecd:196 ↩ mxe998.netcup.net
SOA Record
Raw SOA
root-dns.netcup.net dnsadmin.netcup.net 2026082535 600 600 1209600 600
Primary NS (mname)
root-dns.netcup.net
Admin Email (rname)
dnsadmin@netcup.net
Serial
2026082535
Refresh
600s
Retry
600s
Expire
1209600s
Minimum TTL
600s
Nameservers (NS)
root-dns.netcup.net
second-dns.netcup.net
third-dns.netcup.net
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a include:_spf.webhosting.systems ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; sp=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx a include:_spf.webhosting.systems ~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 · Customize →
See demo & docs
Deep verification
Full email verification for sebastian-rader.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits