Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
globalknowledge.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-09-04 18:31:11 UTC · ↺ Refresh
MX Hostnames
- globalknowledge-de.mail.protection.outlook.com
MX Priorities
- globalknowledge-de.mail.protection.outlook.com: 1
A / AAAA Records
- 13.107.226.38 (no PTR)
- 13.107.253.38 (no PTR)
- 2620:1ec:29:1::38
- 2620:1ec:48:1::38
Mail Server IPs
- 52.101.91.159 ↩ mail-matpr04cu00207.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 52.101.103.39 ↩ mail-miypr05cu00207.inbound.protection.outlook.com
- 52.101.103.137 ↩ mail-miypr02cu00101.inbound.protection.outlook.com
- 2a01:111:f403:ca48::12 ↩ mail-miypr05cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca3c::a ↩ mail-zrxpr07cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
udns1.cscdns.net hostmaster.cscdns.net 2018073077 86400 1800 3600000 86400
Primary NS (mname)
udns1.cscdns.net
Admin Email (rname)
hostmaster@cscdns.net
Serial
2018073077
Refresh
86400s
Retry
1800s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
udns1.cscdns.net
udns2.cscdns.uk
SPF Record
✓ Strict (-all)
v=spf1 include:spfDE.globalknowledge.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
5 records- wa-cms-www-apex-redirect-eastus.azurewebsites.net
- PuoVIhxvTHzdOSudUFlxx1hGvjm8Jna+KQ7ksWeUXaMgsoYDtdSYUoj4QJ9LQqwkj1Y8NyrS9KFE4sbeVtmuOQ==
- MS=ms16046126
- 88g2r04vh2dj42c7yct6fn1kl7ggbbqn
- SPFv=spf1 include:spfDE.globalknowledge.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 globalknowledge.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits