Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rubicon.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 00:27:39 UTC · ↺ Refresh
MX Hostnames
- rubicon-com.mail.protection.outlook.com
MX Priorities
- rubicon-com.mail.protection.outlook.com: 0
A / AAAA Records
- 23.185.0.4 (no PTR)
- 2620:12a:8000::4 (no PTR)
- 2620:12a:8001::4
Mail Server IPs
- 52.101.41.28 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 52.101.9.11 ↩ mail-bl2pr04cu00103.inbound.protection.outlook.com
- 52.101.11.10 ↩ mail-sa9pr03cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c922::2 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 2a01:111:f403:f802::2 ↩ mail-sj2pr05cu00202.inbound.protection.outlook.com
- 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1259.awsdns-29.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1259.awsdns-29.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-831.awsdns-39.net
ns-1259.awsdns-29.org
ns-1612.awsdns-09.co.uk
ns-77.awsdns-09.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:44.228.189.70 include:spf.protection.outlook.com include:mailgun.org include:sendgrid.net include:spf.ess.barracudanetworks.com include:_spf.salesforce.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
14 records- facebook-domain-verification=0dy8a11wbkboxylyrx6rdng9xgh0r8
- google-site-verification=M9CM_zaVwiBy8HCeDqICN3bICnS43TUmlQpBa0HAjiw
- google-site-verification=zoHz7ngNSOeySY-ym0tuqYugUGGIei2ehehc8t7evDg
- nitro-verification-code=Mzc1NDUzMDIwNjM1NTg5MzEyMw==
- pardot263882=d6a04b86fdebe9c87b21229982075634afc273670fc3af4c8abbb5b65b2e9dc2
- status-page-domain-verification=q3d8xgxz8mcb
- twilio-domain-verification=c0ce3691285b8d519da9ca95c13182a4
- SPFv=spf1 ip4:44.228.189.70 include:spf.protection.outlook.com include:mailgun.org include:sendgrid.net include:spf.ess.barracudanetworks.com include:_spf.salesforce.com ~all
- _github-challenge-RubiconX-org=29d7e49bf3
- _github-challenge-rubiconglobalip-org=cadb91342e
- asv=5cb5c49e42cd87b8628863d83d464693
- atlassian-domain-verification=1CSWELpKKIg7rywuukWGH2dMgIhIrq9nuYA0W4Nlq/5/WJRiZ8YID96xep9MShqq
- docusign=14211bbf-a658-496f-b137-08ef4f436894
- docusign=2297293b-bdef-4b3d-b67d-8ed1763c7260
Full email verification for rubicon.com
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