yubico.com

Valid Email Server
Domain Lookup › yubico.com

Domain Overview

DNS: ✓ 3mo ago Checker: ✓ 3mo ago
yubico.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-06-15 18:03:07 UTC · ↺ Refresh

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MX Hostnames

  • alt4.aspmx.l.google.com
  • alt1.aspmx.l.google.com
  • alt2.aspmx.l.google.com
  • aspmx.l.google.com
  • alt3.aspmx.l.google.com

MX Priorities

  • alt3.aspmx.l.google.com: 10
  • alt4.aspmx.l.google.com: 10
  • alt1.aspmx.l.google.com: 5
  • aspmx.l.google.com: 1
  • alt2.aspmx.l.google.com: 5

A / AAAA Records

  • 151.101.130.114
  • 151.101.194.114
  • 151.101.66.114
  • 151.101.2.114
  • 2a04:4e42:600::626
  • 2a04:4e42:400::626
  • 2a04:4e42::626
  • 2a04:4e42:200::626

Mail Server IPs

  • 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
  • 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
  • 172.253.157.26 ↩ yubrupd-in-f26.1e100.net
  • 2a00:1450:400c:c23::1b ↩ yubrupd-in-f27.1e100.net
  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 192.178.155.26 ↩ yuiadrs-in-f26.1e100.net
  • 2607:f8b0:4004:c1f::1a ↩ pd-in-f26.1e100.net
  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net

SOA Record

Raw SOA ns-cloud-e1.googledomains.com cloud-dns-hostmaster.google.com 1 21600 3600 259200 300
Primary NS (mname)
ns-cloud-e1.googledomains.com
Admin Email (rname)
cloud-dns-hostmaster@google.com
Serial
1
Refresh
21600s
Retry
3600s
Expire
259200s
Minimum TTL
300s

Nameservers (NS)

ns-cloud-e1.googledomains.com
ns-cloud-e3.googledomains.com
ns-cloud-e2.googledomains.com
ns-cloud-e4.googledomains.com

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:46.235.224.245/32 ip4:104.130.74.24/32 include:_spf.google.com include:rp.oracleemaildelivery.com include:eu.rp.oracleemaildelivery.com include:ap.rp.oracleemaildelivery.com exists:%{i}._spf.mta.salesforce.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate 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

✓ 1 found
google._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

23 records
  • 1password-site-verification=C4VBIWTNYFER5OOCHVJU2MTAII
  • docusign=344e3a2e-fe49-42a4-b5ae-fd23dcc0b72f
  • atlassian-sending-domain-verification=762db5fe-698c-4d93-a0ed-b4415055f802
  • google-site-verification=E1u4QIF_yGIEmo1_LSfDWeP9pWQEnzSuunTGXfluvWc
  • google-site-verification=cm0ud8DosbawIseioZWR5-l6uLFogwEYR8OpHXcWe1w
  • apple-domain-verification=i0pfFG8KLQYxra5p
  • SPFv=spf1 ip4:46.235.224.245/32 ip4:104.130.74.24/32 include:_spf.google.com include:rp.oracleemaildelivery.com include:eu.rp.oracleemaildelivery.com include:ap.rp.oracleemaildelivery.com exists:%{i}._spf.mta.salesforce.com ~all
  • openai-domain-verification=dv-XWDYVl32jJzCksJZcOUk7Tyc
  • docker-verification=7eaae4cf-2bdb-4528-8c12-ae3ec18d9dac
  • google-site-verification=aKR17QT6FyB3SwlRCUfJkYW82P0uU_4vIk3iBGjb7wY
  • have-i-been-pwned-verification=7528d8520a54a3233cb42c26bef59498
  • google-site-verification=3dYE5o6tXr58Ifp_dTq21Pe78QFiWgA_ZgLviwczyGY
  • adobe-idp-site-verification=8233cb63a0e1bc2cf5b686c37454a22cd3684022d171c40d9a7cdb299c627fd1
  • asv=d97e483b7a01012ed7d4a3571fc4f5fe
  • anthropic-domain-verification-deaz83=yHN9eCQxU1mw3wByrETKFQYGG
  • google-site-verification=KzzqYTzZ6c_YEowjKkmu7woBL2G9Z0VQgiR5nh8ndVc
  • google-site-verification=1Q7E_o_fcik3HTCdhgqWhULWNp3Tc3V8UbdFiv9usvI
  • slack-domain-verification=iRSAt0gjfeLmlsS50OKy7pZFFt8ANdQdAhdnH33t
  • atlassian-domain-verification=ipTaHvUYHB5m2sGAHn+wb0QAZaDU1OhT9I1zWtt5qbn81IDeYBquZ+lcXlrYOPCx
  • MS=ms15291863
  • google-site-verification=IHur8NDPA0N7kMAF1f2q_vJ-Rk7S8hxpcvn92sEew-s
  • veremark-domain-verification-33mmwa=KKsw5Pt7DBoDmOCIqokf0wEqo
  • google-site-verification=dSJYQW_buweb2dPfaXPJslY-ccmx_zIGbR1hffFU1fs
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