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 medium.com

TypeValueTTLFirst/Last Observed
A 162.159.152.4 300 2026-08-10 16:44:49
A 162.159.153.4 300 2026-08-10 16:44:49
AAAA 2606:4700:7::a29f:9904 198 2026-08-10 16:44:49
AAAA 2606:4700:7::a29f:9804 198 2026-08-10 16:44:49
MX aspmx.l.google.com 300 2026-08-10 16:44:49
MX aspmx3.googlemail.com 300 2026-08-10 16:44:49
MX alt1.aspmx.l.google.com 300 2026-08-10 16:44:49
MX alt2.aspmx.l.google.com 300 2026-08-10 16:44:49
MX aspmx2.googlemail.com 300 2026-08-10 16:44:49
NS kip.ns.cloudflare.com 9381 2026-08-10 16:44:49
NS alina.ns.cloudflare.com 9381 2026-08-10 16:44:49
SOA alina.ns.cloudflare.com 1800 2026-08-10 16:44:49
TXT 07ecf60c9da442a9b3bcce99190ff60a 300 2026-08-10 16:44:49
TXT google-site-verification=jUulFqySbosf7Fvi1pvOm1KL3AeQ5L5s18CDIU30xek 300 2026-08-10 16:44:49
TXT anthropic-domain-verification-p32bnn=TlzaDtedEYyM5ccLdU8NsQIPP 300 2026-08-10 16:44:49
TXT Domain Verification for Digicert (10/05/2022)y7ncgbyk39tw482zsbwcnfx0t775d85j 300 2026-08-10 16:44:49
TXT notion-domain-verification=FPUVTTLhldYnVqE4496kGbBhDpf54Y4O7eA8SxkbAHk 300 2026-08-10 16:44:49
TXT linear-domain-verification=tyjcyfd4thj2 300 2026-08-10 16:44:49
TXT v=spf1 include:amazonses.com include:_spf.google.com include:mail.zendesk.com include:sendgrid.net include:spf.tipalti.com include:_spf.psm.knowbe4.com ~all 300 2026-08-10 16:44:49
TXT yahoo-verification-key=nOxcdTfSy6txWr8ZAJ8EevOZHdrxuX4qFKljmgTLsu8= 300 2026-08-10 16:44:49
TXT google-site-verification=TUaeSBwTARWW1ntR_TLK0FwD5WKnFCpB5gYVuXkBmlg 300 2026-08-10 16:44:49
TXT apple-domain-verification=Ls6JkesM8aOd8xyQ 300 2026-08-10 16:44:49
TXT cursor-domain-verification-54pwxn=8yHL5J3FELu0JwETv8iGeZt4A 300 2026-08-10 16:44:49
TXT facebook-domain-verification=eqviiajbkkhum35vciytgngt69oan0 300 2026-08-10 16:44:49
TXT google-site-verification=nlPBDLGxOufYa5DdXnQ8d28h5dJjwy0bSakZq-tSios 300 2026-08-10 16:44:49
TXT google-site-verification=QuRrrbvTtvFC0uq2BLr_CcuuuDEiNGDJjI7XkPV3s60 300 2026-08-10 16:44:49
TXT dropbox-domain-verification=d7wsnlvbz6l3 300 2026-08-10 16:44:49
TXT openai-domain-verification=dv-G8sPcKCsIq9tKkWTNFJZh3RE 300 2026-08-10 16:44:49

Most-Observed Hosts

HostRecordsLast Seen
aaa.com 10221h ago
fedex.com 8222h ago
prudential.com 6423h ago
marriott.com 621d ago
udemy.com 607h ago
ringcentral.com 5714h ago
zoominfo.com 522d ago
185.220.101.29 503d ago
185.220.101.23 503d ago
185.220.101.27 502d ago
185.220.101.25 503d ago
185.220.101.24 502d ago
185.220.101.26 502d ago
185.220.101.22 502d ago
185.220.101.7 503d ago
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