guardanthealth.com

Valid Email Server
Domain Lookup › guardanthealth.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
guardanthealth.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-30 02:28:45 UTC · ↺ Refresh

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MX Hostnames

  • guardanthealth-com.mail.protection.outlook.com

MX Priorities

  • guardanthealth-com.mail.protection.outlook.com: 10

A / AAAA Records

  • 52.42.120.9 ↩ ec2-52-42-120-9.us-west-2.compute.amazonaws.com
  • 184.33.127.132 ↩ ec2-184-33-127-132.us-west-2.compute.amazonaws.com

Mail Server IPs

  • 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
  • 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
  • 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
  • 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:c92c::3 ↩ mail-dm5pr04cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com

SOA Record

Raw SOA ns-1044.awsdns-02.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1044.awsdns-02.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-730.awsdns-27.net
ns-1044.awsdns-02.org
ns-2043.awsdns-63.co.uk
ns-284.awsdns-35.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_u.guardanthealth.com._spf.smart.ondmarc.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; pct=100; sp=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=r; aspf=r; fo=1; rf=afrf; ri=3600
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

DKIM Selectors

✓ 6 found
google._domainkey
selector1._domainkey
selector2._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

12 records
  • twilio-domain-verification=da713f3935301c310f6c2a71f5b76257
  • SPFv=spf1 include:_u.guardanthealth.com._spf.smart.ondmarc.com ~all
  • adobe-idp-site-verification=02ac8d9eaf6a88dd961d15d998d6d0c861a7073374ab187d535d2160c21a9694
  • apple-domain-verification=W2ol7s1fnxtoKfOK
  • atlassian-domain-verification=Lnehw2wtIYa2Jf1OE77MH/wfUUJcwTdFo3FQBstD0NOr6n5LaNJBotPdXk26DS1v
  • box-domain-verification=5593e8cdc7aba2fd4716da7810e5b01e89d3a49920d4120a7e292aca3038b348
  • google-site-verification=oAQYHNqBip8ZlRQJoJsLeM-qvIy-iO5ZAmTko-l7wWQ
  • miro-verification=599a2e04e75992a1a5da61cd4c8aea0213576638
  • openai-domain-verification=dv-rlGohjaxjbln8mK20hn5MObL
  • pardot521511=c7997190130ea0a22c3219e7b4a617e025b5df3045fcdc2c650e09dc888e3562
  • pendo-domain-verification=7ygNzgvHdHUci_uu75zyrbjCECY
  • slack-domain-verification=JFMGj1xO2e2idNISA4GW1mk04dkJLJs9MhodserQ
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