Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
c24.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-03 08:37:54 UTC · ↺ Refresh
MX Hostnames
- c24-de.mail.protection.outlook.com
MX Priorities
- c24-de.mail.protection.outlook.com: 0
A / AAAA Records
- 104.18.8.247 (no PTR)
- 104.18.9.247 (no PTR)
- 2606:4700::6812:8f7
- 2606:4700::6812:9f7
Mail Server IPs
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
SOA Record
Raw SOA
micah.ns.cloudflare.com dns.cloudflare.com 2400542715 10000 2400 604800 1800
Primary NS (mname)
micah.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400542715
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
micah.ns.cloudflare.com
nola.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:89.191.71.130/32 include:spf.protection.outlook.com include:mail.zendesk.com include:_spf.hops.check24.de include:_spf-staging.hops.check24.de -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;sp=reject;rua=mailto:[email protected];ruf=mailto:[email protected];aspf=s;adkim=s;fo=1
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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
11 records- google-gws-recovery-domain-verification=67770707
- google-site-verification=MZdnlOLnsbdC8gQgDyZR3VikwCSe-YPG6x89Pz6tWIs
- jamf-site-verification=nSxGiuuEgQcoA8vjDY1Hig
- sendinblue-code:f3d26875c148ea8988d082167f37e83d
- slack-domain-verification=OIfYWyhyx9WGP5dJNn142lvWLYbhDr4eJBY6DeCl
- szdhnyg2zcx0cgb5s62x9bs9hvlh7p7v
- SPFv=spf1 ip4:89.191.71.130/32 include:spf.protection.outlook.com include:mail.zendesk.com include:_spf.hops.check24.de include:_spf-staging.hops.check24.de -all
- 2c7423ec45db4d62a79cbcdd0c11a5b2
- D-TRUST=KLQ9BQGLTJ7M9TS8RYMCUMF
- MS=ms56580196
- _8akb6ab5ggpgduy7rp9u858nat3eqol
Full email verification for c24.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits