Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gibbsortho.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 08:40:43 UTC · ↺ Refresh
MX Hostnames
- gibbsortho-com.mail.protection.outlook.com
MX Priorities
- gibbsortho-com.mail.protection.outlook.com: 10
A / AAAA Records
- 172.67.156.96 (no PTR)
- 104.21.82.107 (no PTR)
- 2606:4700:3037::ac43:9c60
- 2606:4700:3035::6815:526b
Mail Server IPs
- 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
- 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 52.101.40.2 ↩ mail-cy1pr05cu00402.inbound.protection.outlook.com
- 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
- 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c92c::1 ↩ mail-dm6pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c946::6 ↩ mail-ch5pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com
SOA Record
Raw SOA
noah.ns.cloudflare.com dns.cloudflare.com 2398376749 10000 2400 604800 1800
Primary NS (mname)
noah.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398376749
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
sofia.ns.cloudflare.com
noah.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 +ip4:104.243.37.189 +include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._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 +ip4:104.243.37.189 +include:spf.protection.outlook.com -all
- MS=ms79907947
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