Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
dr-starck.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 17:31:32 UTC · ↺ Refresh
MX Hostnames
- drstarck-de0e.mail.protection.outlook.com
MX Priorities
- drstarck-de0e.mail.protection.outlook.com: 10
A / AAAA Records
- 188.64.62.232 (no PTR)
- 2a00:6140:a000:1d::18 (no PTR)
Mail Server IPs
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
- 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
SOA Record
Raw SOA
ns01.riconnect.de hostmaster.riconnect.de 2025120201 14400 1800 1209600 3600
Primary NS (mname)
ns01.riconnect.de
Admin Email (rname)
hostmaster@riconnect.de
Serial
2025120201
Refresh
14400s
Retry
1800s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns01.riconnect.de
ns02.riconnect.de
ns03.riconnect.de
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:52.142.226.252 include:spf.protection.outlook.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- SPFv=spf1 ip4:52.142.226.252 include:spf.protection.outlook.com ~all
- sophos-domain-verification=774a10f86cbc4601750c82b208a06fa65f6800a9e3d8b3a8d53b2296ee242354
- google-site-verification=PXNgn-VcuFUCD2cAu8VSPkVhFjIpFw3r1kZLToQmN2o
- apple-domain-verification=PTE8Q0KMw7QIogJK
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 dr-starck.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits