Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
diagnostikum-berlin.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 05:58:10 UTC · ↺ Refresh
MX Hostnames
- diagnostikumberlin-de03b.mail.protection.outlook.com
MX Priorities
- diagnostikumberlin-de03b.mail.protection.outlook.com: 10
A / AAAA Records
- 217.160.0.223 ↩ 217-160-0-223.elastic-ssl.ui-r.com
Mail Server IPs
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1077.ui-dns.de hostmaster.1und1.de 2017020225 28800 7200 604800 300
Primary NS (mname)
ns1077.ui-dns.de
Admin Email (rname)
hostmaster@1und1.de
Serial
2017020225
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1077.ui-dns.com
ns1077.ui-dns.org
ns1077.ui-dns.biz
ns1077.ui-dns.de
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:62.217.51.126 ip4:212.227.15.183 ip4:212.227.15.167 include:spf.eu.signature365.net include:spf.protection.outlook.com -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
8 records- knowbe4-site-verification=ada2abb2a7dc0d52c1c129fc387c5094
- sd533bpttrnp6or91hoa56nibc
- i4gVAnL8fUkCajwbNsvau7weo6bXDQrtIOKFh1Rq2gvSu3f8J4+vFIfBbDx2DVHk0XiOag5yrjedFRoetgMnZQ==
- apple-domain-verification=s4OgDHTgldGEst0d
- _zoidkm16cq07k8ptdl096bb4nalsivi
- _eark95tu0uped32v56w8ps5ot4za783
- MS=ms55891574
- SPFv=spf1 a mx ip4:62.217.51.126 ip4:212.227.15.183 ip4:212.227.15.167 include:spf.eu.signature365.net include:spf.protection.outlook.com -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 diagnostikum-berlin.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits