Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
horizonhouse.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 17:49:59 UTC · ↺ Refresh
MX Hostnames
- horizonhouse-com.mail.protection.outlook.com
MX Priorities
- horizonhouse-com.mail.protection.outlook.com: 0
A / AAAA Records
- 100.26.4.77 ↩ ec2-100-26-4-77.compute-1.amazonaws.com
Mail Server IPs
- 52.101.11.17 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 52.101.194.15 ↩ mail-ch4pr21cu00107.inbound.protection.outlook.com
- 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
- 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
ns0.directnic.com hostmaster.directnic.com 1371922957 28800 14400 604800 3600
Primary NS (mname)
ns0.directnic.com
Admin Email (rname)
hostmaster@directnic.com
Serial
1371922957
Refresh
28800s
Retry
14400s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns0.directnic.com
ns1.directnic.com
ns2.directnic.com
ns3.directnic.com
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:216.211.255.210 ip4:93.89.129.33 include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 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
2 records- SPFv=spf1 a mx ip4:216.211.255.210 ip4:93.89.129.33 include:spf.protection.outlook.com -all
- iZmrwLXRoS41HNn3WnlmnCY2qBYRJiYu9xNpXx9FQxgQhvRpF3s2ToBhI54B3n+HyjBgeZTanbnpPLZ6dEMSwA==
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