Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

100 hosts (first page) · 409 ms

HostCertsFirst seenLast seenDNS
kentik.com 5 2026-05-26 2026-09-23 ok
*.kentik.com 5 2026-05-27 2026-09-24 —
*.fra1.kentik.com 5 2026-05-18 2026-09-15 —
*.api.fra1.kentik.com 5 2026-04-29 2026-08-26 —
*.in.fra1.kentik.com 5 2026-05-18 2026-09-15 —
*.ui-dev.fra1.kentik.com 5 2026-05-28 2026-09-26 —
*.my.fra1.kentik.com 5 2026-05-20 2026-09-17 —
*.hub1.kentik.com 5 2026-05-29 2026-09-26 —
*.beta.hub1.kentik.com 31 2026-05-28 2026-09-27 —
*.api.hub1.kentik.com 15 2026-05-28 2026-09-27 —
*.in.hub1.kentik.com 10 2026-05-28 2026-09-26 —
tmp.hub1.kentik.com 10 2026-04-24 2026-08-23 nxdomain
*.ui-dev.hub1.kentik.com 20 2026-05-28 2026-09-27 —
*.my.hub1.kentik.com 25 2026-05-28 2026-09-27 —
*.iad1.kentik.com 3 2026-06-09 2026-08-08 —
*.api.iad1.kentik.com 5 2026-04-29 2026-08-27 —
*.in.iad1.kentik.com 5 2026-05-20 2026-09-17 —
*.ui-dev.iad1.kentik.com 5 2026-05-27 2026-09-24 —
*.my.iad1.kentik.com 5 2026-05-21 2026-09-18 —
*.hnd1.kentik.com 5 2026-05-19 2026-09-16 —
*.beta.hnd1.kentik.com 5 2026-05-22 2026-09-20 —
*.api.hnd1.kentik.com 5 2026-05-14 2026-09-11 —
*.in.hnd1.kentik.com 5 2026-05-27 2026-09-24 —
tmp.hnd1.kentik.com 10 2026-04-24 2026-08-23 nxdomain
*.ui-dev.hnd1.kentik.com 5 2026-05-20 2026-09-17 —
*.my.hnd1.kentik.com 5 2026-05-27 2026-09-24 —
*.hrd1.kentik.com 5 2026-05-19 2026-09-17 —
*.beta.hrd1.kentik.com 5 2026-05-22 2026-09-19 —
*.api.hrd1.kentik.com 5 2026-05-14 2026-09-11 —
*.in.hrd1.kentik.com 5 2026-05-26 2026-09-22 —
*.ui-dev.hrd1.kentik.com 5 2026-05-21 2026-09-19 —
*.my.hrd1.kentik.com 10 2026-05-21 2026-09-19 —
*.bne1.kentik.com 4 2026-04-10 2026-08-08 —
*.beta.bne1.kentik.com 28 2026-04-10 2026-08-09 —
*.api.bne1.kentik.com 12 2026-04-10 2026-08-08 —
*.in.bne1.kentik.com 8 2026-04-10 2026-08-08 —
*.ui-dev.bne1.kentik.com 16 2026-04-10 2026-08-08 —
*.my.bne1.kentik.com 20 2026-04-10 2026-08-08 —
*.buf1.kentik.com 5 2026-05-18 2026-09-16 —
*.beta.buf1.kentik.com 5 2026-05-22 2026-09-19 —
*.api.buf1.kentik.com 5 2026-05-13 2026-09-11 —
*.in.buf1.kentik.com 5 2026-05-26 2026-09-23 —
tmp.buf1.kentik.com 10 2026-04-25 2026-08-23 nxdomain
*.ui-dev.buf1.kentik.com 5 2026-05-21 2026-09-18 —
*.my.buf1.kentik.com 10 2026-05-20 2026-09-18 —
*.iij1.kentik.com 4 2026-04-11 2026-08-09 —
*.beta.iij1.kentik.com 5 2026-05-21 2026-09-18 —
*.api.iij1.kentik.com 12 2026-04-11 2026-08-09 —
*.in.iij1.kentik.com 8 2026-04-11 2026-08-09 —
tmp.iij1.kentik.com 10 2026-04-25 2026-08-24 nxdomain
*.ui-dev.iij1.kentik.com 16 2026-04-10 2026-08-09 —
*.my.iij1.kentik.com 20 2026-04-10 2026-08-09 —
*.jp1.kentik.com 5 2026-05-19 2026-09-16 —
*.beta.jp1.kentik.com 5 2026-05-21 2026-09-18 —
*.api.jp1.kentik.com 5 2026-05-14 2026-09-11 —
*.in.jp1.kentik.com 5 2026-05-26 2026-09-23 —
*.ui-dev.jp1.kentik.com 5 2026-05-20 2026-09-17 —
*.my.jp1.kentik.com 10 2026-05-20 2026-09-18 —
*.gmp1.kentik.com 5 2026-05-13 2026-09-10 —
*.beta.gmp1.kentik.com 37 2026-05-12 2026-09-10 —
*.api.gmp1.kentik.com 17 2026-05-13 2026-09-10 —
*.in.gmp1.kentik.com 10 2026-05-13 2026-09-10 —
*.ui-dev.gmp1.kentik.com 22 2026-05-13 2026-09-10 —
*.my.gmp1.kentik.com 27 2026-05-13 2026-09-10 —
*.tmp1.kentik.com 4 2026-04-21 2026-08-20 —
*.beta.tmp1.kentik.com 28 2026-04-21 2026-08-20 —
*.api.tmp1.kentik.com 12 2026-04-21 2026-08-20 —
*.in.tmp1.kentik.com 8 2026-04-21 2026-08-20 —
*.ui-dev.tmp1.kentik.com 16 2026-04-21 2026-08-20 —
*.my.tmp1.kentik.com 20 2026-04-21 2026-08-20 —
*.our1.kentik.com 4 2026-06-07 2026-10-05 —
secure-saml2.our1.kentik.com 5 2026-05-19 2026-09-16 nxdomain
*.beta.our1.kentik.com 5 2026-05-20 2026-09-17 —
*.api.our1.kentik.com 5 2026-04-25 2026-08-23 —
*.in.our1.kentik.com 5 2026-05-28 2026-09-25 —
*.ui-dev.our1.kentik.com 5 2026-05-28 2026-09-24 —
*.my.our1.kentik.com 5 2026-05-27 2026-09-25 —
*.aws1.kentik.com 15 2026-05-13 2026-09-11 —
*.beta.aws1.kentik.com 5 2026-05-22 2026-09-19 —
*.api.aws1.kentik.com 10 2026-05-13 2026-09-11 —
*.in.aws1.kentik.com 5 2026-05-13 2026-09-11 —
tmp.aws1.kentik.com 10 2026-04-25 2026-08-23 nxdomain
*.ui-dev.aws1.kentik.com 5 2026-05-22 2026-09-20 —
*.my.aws1.kentik.com 10 2026-05-20 2026-09-20 —
*.bct1.kentik.com 5 2026-05-20 2026-09-17 —
*.beta.bct1.kentik.com 5 2026-05-21 2026-09-19 —
*.api.bct1.kentik.com 5 2026-05-14 2026-09-10 —
*.in.bct1.kentik.com 5 2026-05-28 2026-09-24 —
tmp.bct1.kentik.com 10 2026-04-25 2026-08-23 nxdomain
*.ui-dev.bct1.kentik.com 5 2026-05-20 2026-09-16 —
*.my.bct1.kentik.com 5 2026-05-25 2026-09-23 —
*.nrt1.kentik.com 5 2026-05-19 2026-09-16 —
*.beta.nrt1.kentik.com 5 2026-05-22 2026-09-20 —
*.api.nrt1.kentik.com 5 2026-05-13 2026-09-11 —
*.in.nrt1.kentik.com 5 2026-05-26 2026-09-23 —
tmp.nrt1.kentik.com 10 2026-04-25 2026-08-23 nxdomain
*.ui-dev.nrt1.kentik.com 5 2026-05-21 2026-09-18 —
*.my.nrt1.kentik.com 5 2026-05-26 2026-09-22 —
*.lgu1.kentik.com 4 2026-04-19 2026-08-17 —
*.beta.lgu1.kentik.com 5 2026-05-22 2026-09-19 —

Showing the first 100 hostnames — sign in with GitHub or Google to page the full list, or use the API with an API key: GET /v1/hosts/kentik.com.

Shown here: hostnames with a certificate that is valid now or expired within the last 90 days. The full history since 2013 — hostnames whose last certificate expired earlier — is a Pro plan method: GET /v1/hosts-history/kentik.com.