Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ardhsb.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 21:28:43 UTC · ↺ Refresh
MX Hostnames
- ardhsb-de.mail.protection.outlook.com
- mx02.ardhsb.de
- mx01.ardhsb.de
MX Priorities
- mx02.ardhsb.de: 50
- ardhsb-de.mail.protection.outlook.com: 500
- mx01.ardhsb.de: 50
A / AAAA Records
- 136.243.218.98
Mail Server IPs
- 185.17.246.122 ↩ mx02.ard-hauptstadtstudio.de
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
- 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
- 185.17.246.121 ↩ mx01.ard-hauptstadtstudio.de
SOA Record
Raw SOA
ns1.vodafone-ip.de hostmaster.cn.ard.de 2026031712 28800 7200 604800 86400
Primary NS (mname)
ns1.vodafone-ip.de
Admin Email (rname)
hostmaster@cn.ard.de
Serial
2026031712
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
auth2.dns.cogentco.com
ns1.vodafone-ip.de
ns2.vodafone-ip.de
auth1.dns.cogentco.com
SPF Record
✓ Strict (-all)
v=spf1 mx include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; adkim=s; aspf=s; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
4 records- sRTY0ntDgclNpfk+Ar3rWmslhANUn24JhEYpBADuYLkq+ze/ShQo8ZsQBmsT/aruXS0qntl3eKLufgNxe4fcGA==
- RyZSCtLwxKkBXU+EPeWvlpSLkRRSg/3Z5IKJknGXsuyqLrHW7aOCCzpu2f5txli8TkeNcE736OP0HKT1yDO8Gw==
- MS=ms87486074
- SPFv=spf1 mx include:spf.protection.outlook.com -all
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