Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hochtief.cz
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 05:35:06 UTC · ↺ Refresh
MX Hostnames
- hochtief-cz.mail.protection.outlook.com
MX Priorities
- hochtief-cz.mail.protection.outlook.com: 0
A / AAAA Records
- 185.22.96.175 ↩ 175.96.22.185.tcpro.cz
Mail Server IPs
- 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
- 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
- 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.regzone.cz administrator.czechia.cz 2026030204 10800 1800 1814400 3600
Primary NS (mname)
ns1.regzone.cz
Admin Email (rname)
administrator@czechia.cz
Serial
2026030204
Refresh
10800s
Retry
1800s
Expire
1814400s
Minimum TTL
3600s
Nameservers (NS)
ns1.regzone.de
ns1.regzone.info
ns1.regzone.cz
SPF Record
✓ Strict (-all)
v=spf1 ip4:10.220.66.213 ip4:194.213.46.99 ip4:194.213.46.98 ip4:194.213.46.106 ip4:185.60.38.44 include:spf.protection.outlook.com include:psm.knowbe4.com include:sendgrid.net include:_spf.salesforce.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; ruf=mailto:[email protected]; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
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
5 records- _telesec-domain-validation=F9572938098755422E8A6C7F1091B64AB145535765E40259E9410602A5490159
- SPFv=spf1 ip4:10.220.66.213 ip4:194.213.46.99 ip4:194.213.46.98 ip4:194.213.46.106 ip4:185.60.38.44 include:spf.protection.outlook.com include:psm.knowbe4.com include:sendgrid.net include:_spf.salesforce.com -all
- apple-domain-verification=pwWDTAByzwxDlc7M
- linkedin-site-verification=ffab876d-637f-45e4-a23c-6cab6206ce3f
- BU28H+6R7AMVZZZLYM60ACATHinYja WK4/LGwImDoiPtlHeRbAh5TMzM7NOH 5qZ1dv+A/3LvPHl7iPC/v+elvQ==
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