Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
koch-essen.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 18:27:26 UTC · ↺ Refresh
MX Hostnames
- kochessen-de01b.mail.protection.outlook.com
MX Priorities
- kochessen-de01b.mail.protection.outlook.com: 0
A / AAAA Records
- 206.189.251.19 ↩ koch-essen.de
Mail Server IPs
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
- 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
SOA Record
Raw SOA
dns200.anycast.me tech.ovh.net 2026030800 86400 3600 3600000 300
Primary NS (mname)
dns200.anycast.me
Admin Email (rname)
tech@ovh.net
Serial
2026030800
Refresh
86400s
Retry
3600s
Expire
3600000s
Minimum TTL
300s
Nameservers (NS)
ns200.anycast.me
dns200.anycast.me
SPF Record
✓ Strict (-all)
v=spf1 a mx include:_spf.google.com include:servers.mcsv.net include:spf.protection.outlook.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;sp=none;aspf=s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none
DKIM Selectors
✓ 2 found
google._domainkey
k1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
9 records- google-site-verification=xxAHeqkqBe_VRh-Du_Efj5PQzfATLZ68BSvfSSDrJJM
- SPFv=spf1 a mx include:_spf.google.com include:servers.mcsv.net include:spf.protection.outlook.com -all
- trustmarkt-verification=4b4976ab
- apple-domain-verification=VDqfyp0wjECc6ZcdFlrGsvk-iByG0MIZXKwRy_zqZkg
- apple-domain-verification=ZFQLp1hQKeqzQ0b7
- ahrefs-site-verification_d9217dc61c0444d5c945bea4edb21660d82253a6e61b38f3fbf81eb3c3b8adc5
- MS=ms74023679
- brevo-code:5fcb5249b179d69bbbe847ba8d8693d3
- google-site-verification=UJsRtqVvcFs4qCZFNOelH43nCnQsh7pktY9Lswj1LDM
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 koch-essen.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits