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 checkmarx.com

TypeValueTTLFirst/Last Observed
A 141.193.213.21 7200 2026-08-12 18:16:24
A 141.193.213.20 7200 2026-08-12 18:16:24
MX checkmarx-com.mail.protection.outlook.com 7200 2026-08-12 18:16:24
NS dns1.bigrock.com 10378 2026-08-12 18:16:24
NS dns3.bigrock.com 10378 2026-08-12 18:16:24
NS dns4.bigrock.com 10378 2026-08-12 18:16:24
NS dns2.bigrock.com 10378 2026-08-12 18:16:24
SOA dns4.bigrock.com 21600 2026-08-12 18:16:24
TXT v=MCPv1; k=ed25519; p=xvlkTRRbBf46ufZKIS5qiUZ/dy+vdMORg1aqK2uDxMI= 7200 2026-08-12 18:16:24
TXT 1password-site-verification=SDL5F44IJVDQ5MIRNV4MW3SGNQ 7200 2026-08-12 18:16:24
TXT jamf-site-verification=4_5CDWmB8lj8jxhtPmRf4w 7200 2026-08-12 18:16:24
TXT amazonses:lqyMnoA0VL0fnHiivXRrarcGODAf1cVnR/auYLHcxYY= 7200 2026-08-12 18:16:24
TXT ciscocidomainverification=49bbffc649c8677a394104a272cb18c00eab922bf289fb1f070399de60b28c10 7200 2026-08-12 18:16:24
TXT atlassian-domain-verification=4zdxHKq5sOWhLhtjWKJ2nlkhEsLBlh8Ta+Gld/nehGg5sX5w5o17e+d3NR+xVv8Z 7200 2026-08-12 18:16:24
TXT k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDPtW5iwpXVPiH5FzJ7Nrl8USzuY9zqqzjE0D1r04xDN6qwziDnmgcFNNfMewVKN2D1O 7200 2026-08-12 18:16:24
TXT openai-domain-verification=dv-WIIXBckL8IcrG87t3W1fNuHE 7200 2026-08-12 18:16:24
TXT cursor-domain-verification-p6e9k2=1gH3HMtiwJqOg8YRK7faibg5G 7200 2026-08-12 18:16:24
TXT google-site-verification=F5_bTdjvJ9iEInTemUyKtFuEwItdETffnQu0bxyt2ko 7200 2026-08-12 18:16:24
TXT google-site-verification=dZMxyicl8L01cyUaMiiSoLZXSTdqNHaI5lcs9WoUU-o 7200 2026-08-12 18:16:24
TXT google-site-verification=wPO0Vk8rfSkmq4LI7MOgx4CnRnVZQvvhs6aXmi7dsdY 7200 2026-08-12 18:16:24
TXT docker-verification=ac5f9f08-f78a-4ed4-a177-c9cd3dd85724 7200 2026-08-12 18:16:24
TXT google-site-verification=QpPLhjzR2uHh-639m__JRNsHmDc67feZoQrLQmaOZLU 7200 2026-08-12 18:16:24
TXT 5rphr7vr18tut4nk60eu4gbhsa 7200 2026-08-12 18:16:24
TXT logmein-verification-code=eNTtN8P0v8IhwxSpOwOLJvRBm 7200 2026-08-12 18:16:24
TXT 2Q6FkiJZ2RiYuKCNImRzzRwVdN30GJQX 7200 2026-08-12 18:16:24
TXT o1thtu8hd9dvm1m0is8o36lqg8 7200 2026-08-12 18:16:24
TXT anthropic-domain-verification-edje63=hEH9tbBjxl7z2GWvM3pYHbK1J 7200 2026-08-12 18:16:24
TXT amazonses:EVZgC4HwLAr2w0/sMZWEFgheLrTT09dgRoJdTPGmNLI= 7200 2026-08-12 18:16:24
TXT docusign=42adf495-ef93-4f2f-8cc9-fed2e8b1b55b 7200 2026-08-12 18:16:24
TXT v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:mailgun.org include:sendgrid.net include:_spf.salesforce.com include:amazonses.com include:146169.spf06.hubspotemail.net include:spf.eu.exclaimer.net -all 7200 2026-08-12 18:16:24

Most-Observed Hosts

HostRecordsLast Seen
aaa.com 1025d ago
cisco.com 991d ago
fedex.com 825d ago
amazon.com 701d ago
kering.com 652d ago
prudential.com 645d ago
marriott.com 625d ago
udemy.com 604d ago
pb.com 603d ago
ringcentral.com 574d ago
zoominfo.com 524h ago
appen.com 513d ago
185.220.101.5 50Aug 07, 2026
185.220.101.7 50Aug 07, 2026
185.220.101.19 506d ago
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