Passive DNS

Historic DNS Timeline

Shows every DNS record the platform has observed over time (the DNS audit appends, it doesn't overwrite). For deep historic passive DNS beyond your own observations, add a provider like SecurityTrails/WhoisXML (API key).

Observed Records for alcon.com

TypeValueTTLFirst/Last Observed
A 104.18.26.249 300 2026-08-10 07:59:52
A 104.18.27.249 300 2026-08-10 07:59:52
MX alcon-com.mail.protection.outlook.com 3600 2026-08-10 07:59:52
NS ha2.markmonitor.zone 11399 2026-08-10 07:59:52
NS ha4.markmonitor.zone 11399 2026-08-10 07:59:52
NS ha1.markmonitor.zone 11399 2026-08-10 07:59:52
NS ha3.markmonitor.zone 11399 2026-08-10 07:59:52
SOA ha1.markmonitor.zone 21600 2026-08-10 07:59:52
TXT smartsheet-site-validation=SXvcFeFDEt4c1L73kwq6UFomG8zilL-D 18667 2026-08-10 07:59:52
TXT ciscocidomainverification=146e26878ec5e0895f6501df2a3c68ee3b6c88556f877188cb415425dc2308d4 18667 2026-08-10 07:59:52
TXT onetrust-domain-verification=7e7bedb7afa74cbc8d3b334a6cada390 18667 2026-08-10 07:59:52
TXT docusign=82e971be-ad72-41ae-87b6-75eac4767c6b 18667 2026-08-10 07:59:52
TXT jamf-site-verification=u1YG8_sa1rT37EMTbMHvyg 18667 2026-08-10 07:59:52
TXT atlassian-domain-verification=hz9H76h1Bw+D77KmUkI5oHh28tuLBnBMhjJ5l938uqwxkH2AxRELX+TnDjfwepEw 18667 2026-08-10 07:59:52
TXT es-domain-verification=1aba7546-7c68-42d7-a479-88c817c036f1 18667 2026-08-10 07:59:52
TXT docusign=40ebba49-ae4d-40cf-9abb-dec1b592fa08 18667 2026-08-10 07:59:52
TXT identrust_validate=JDVprAVF8jTSo3z4ggH64vJrNqYpdWwClkc9Ze3zKL1m 18667 2026-08-10 07:59:52
TXT fcd2a3ad-1df7-4b80-a000-ba72ba756125 18667 2026-08-10 07:59:52
TXT 35gtcr2hxvs4g80z6srq1g3mjwbwjpdb 18667 2026-08-10 07:59:52
TXT DirectFedAuthUrl=https://alcon.okta.com/app/alcon_kpmgtaxdigitalgateway_1/exk1mga2i6gghkqog358/sso/saml 18667 2026-08-10 07:59:52
TXT v=spf1 redirect=b0f5qc91._spf._d.mim.ec 18667 2026-08-10 07:59:52
TXT facebook-domain-verification=nevq42k3g2vuwivxr742corj49rxnf 18667 2026-08-10 07:59:52
TXT MS=ms50410465 18667 2026-08-10 07:59:52
TXT _j2brm5m9w4pex1hdmzr7l0tpvoc89rf 18667 2026-08-10 07:59:52
TXT _jablbqxtjseodrwvk94lqsmkrbtq2jy 18667 2026-08-10 07:59:52
TXT adobe-idp-site-verification=31ba988f903b20f14d2e215d43d40694fe80ba55a4dce32519bc9c761d9d7f2f 18667 2026-08-10 07:59:52
TXT zgb1nmxchb49xm9nkbjmzr62d3zsshxj 18667 2026-08-10 07:59:52
TXT 2dbdf70a-c858-472a-992d-087898ea77dd 18667 2026-08-10 07:59:52
TXT canva-site-verification=y9J0BOJJzz83f6ic67k08Q 18667 2026-08-10 07:59:52
TXT _globalsign-domain-verification=tVdVCs40EtFcHbtfINtE9aWKQFRQ7ENxR7Sr2L4_Vl 18667 2026-08-10 07:59:52
TXT vmware-cloud-verification-021fd771-6524-4a6f-9a81-05387288820d 18667 2026-08-10 07:59:52
TXT onetrust-domain-verification=03d8be0039b94882a13008c3e1041dba 18667 2026-08-10 07:59:52
TXT google-site-verification=KWktzcFMQbJIqX8UHWzEGK5qMekmvdMYB2ClYvVy5ws 18667 2026-08-10 07:59:52
TXT docusign=cf99a62b-b1e2-4474-a2d1-84ec805a4db4 18667 2026-08-10 07:59:52
TXT ZOOM_verify_eqQxIbmFhqgU4SPW8FyqNR 18667 2026-08-10 07:59:52
TXT identrust_validate=hz0qodAW+K9KFJPB1WHO5jvDkkXHuw8Hj4AI1+z25Hgm 18667 2026-08-10 07:59:52

Most-Observed Hosts

HostRecordsLast Seen
aaa.com 10215h ago
fedex.com 8216h ago
prudential.com 6417h ago
marriott.com 6219h ago
ringcentral.com 578h ago
zoominfo.com 522d ago
185.220.101.19 502d ago
185.220.101.5 503d ago
185.220.101.13 503d ago
185.220.101.24 502d ago
185.220.101.29 503d ago
185.220.101.26 502d ago
185.220.101.23 503d ago
185.220.101.22 502d ago
185.220.101.27 502d ago
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