Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zht-k.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 20:56:15 UTC · ↺ Refresh
MX Hostnames
- zhtk-de0i.mail.protection.outlook.com
MX Priorities
- zhtk-de0i.mail.protection.outlook.com: 0
A / AAAA Records
- 212.53.165.112 ↩ s1519.server4all.de
Mail Server IPs
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.zht-k.de hostmaster.zht-k.de 2024071601 86400 10800 3600000 172800
Primary NS (mname)
ns1.zht-k.de
Admin Email (rname)
hostmaster@zht-k.de
Serial
2024071601
Refresh
86400s
Retry
10800s
Expire
3600000s
Minimum TTL
172800s
Nameservers (NS)
ns2a.dodns.net
ns1a.dodns.net
SPF Record
✓ Strict (-all)
v=spf1 +ip4:185.136.112.147 include:spf.protection.outlook.com include:spf.antispamcloud.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
2 records- SPFv=spf1 +ip4:185.136.112.147 include:spf.protection.outlook.com include:spf.antispamcloud.com -all
- MS=ms52054847
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 zht-k.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits