Find every subdomain
of a domain.

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

100 hosts (first page) · 301 ms

HostCertsFirst seenLast seen
amazon.ca 7 2025-10-27 2026-08-20
opf-onboardingz-test-v10.amazon.ca 4 2025-09-26 2026-09-09
aero-standard-testing80.amazon.ca 3 2025-11-12 2026-03-10
opf-kuru-testing001.amazon.ca 2 2025-06-18 2026-05-19
opf-kuru-retesting001.amazon.ca 4 2025-08-11 2026-07-12
aero-switch-ktesting001.amazon.ca 5 2025-08-22 2026-07-23
opf-kuru-protesting001.amazon.ca 4 2025-08-19 2026-07-20
opf-kuru-cname110-testing011.amazon.ca 11 2025-11-08 2025-11-09
opf-kuru-cname111-testing011.amazon.ca 10 2025-11-08 2025-11-09
opf-kuru-cname8881-testing011.amazon.ca 1 2025-11-08 2025-11-08
opf-kuru-cname1-testing011.amazon.ca 2 2025-11-06 2025-11-07
opf-kuru-cname104-testing011.amazon.ca 1 2025-11-07 2025-11-07
opf-kuru-cname107-testing011.amazon.ca 4 2025-11-07 2025-11-07
opf-kuru-cname1888-testing011.amazon.ca 1 2025-11-09 2025-11-09
opf-kuru-cname2888-testing011.amazon.ca 4 2025-11-09 2025-11-09
opf-kuru-cname3888-testing011.amazon.ca 3 2025-11-09 2025-11-09
opf-kuru-cname4888-testing011.amazon.ca 3 2025-11-09 2025-11-09
opf-kuru-cname5888-testing011.amazon.ca 3 2025-11-09 2025-11-09
opf-kuru-cname6888-testing011.amazon.ca 2 2025-11-09 2025-11-09
opf-kuru-cname8888-testing011.amazon.ca 3 2025-11-08 2025-11-09
opf-kuru-cname888-testing011.amazon.ca 9 2025-11-08 2025-11-09
opf-kuru-cname109-testing011.amazon.ca 1 2025-11-08 2025-11-08
opf-kuru-testing011.amazon.ca 21 2025-08-16 2025-11-09
aero-tailsyuxitest1111.amazon.ca 1 2025-07-25 2025-07-25
aero-standard-rtestinteg4-cname1.amazon.ca 1 2025-11-08 2025-11-08
aero-standard-rtestinteg1.amazon.ca 2 2026-02-20 2026-07-08
delegate-weblab-stesting1.amazon.ca 3 2026-03-09 2026-08-09
origin-delegate-weblab-stesting1.amazon.ca 1 2026-03-09 2026-03-09
aero-tailsyuxitestlog1.amazon.ca 1 2025-07-24 2025-07-24
aero-standard-vtesting-check1.amazon.ca 1 2025-12-03 2025-12-03
aero-switch-testm1.amazon.ca 2 2026-02-19 2026-07-22
aerotestr1.amazon.ca 4 2025-08-08 2026-07-09
s1.amazon.ca 5 2025-09-27 2026-09-30
cert-creation-test1.amazon.ca 1 2025-09-06 2025-09-06
aero-edgeonly-test1.amazon.ca 1 2025-09-04 2025-09-04
defaultroutetest1.amazon.ca 4 2025-09-24 2026-08-25
opf-kuru-testing002.amazon.ca 2 2025-06-20 2026-05-21
opf-kuru-cname1-protesting002.amazon.ca 1 2025-11-12 2025-11-12
opf-kuru-cname2-protesting002.amazon.ca 1 2025-11-12 2025-11-12
opf-kuru-cname3-protesting002.amazon.ca 1 2025-11-12 2025-11-12
opf-kuru-protesting002.amazon.ca 5 2025-08-20 2025-11-12
l7amr-testing-102.amazon.ca 1 2025-09-24 2025-09-24
vibhavdnstesting102.amazon.ca 2 2026-02-26 2026-07-29
aero-standard-vtst12.amazon.ca 1 2025-12-17 2025-12-17
aero-std-vibtest-22.amazon.ca 1 2026-01-27 2026-01-27
cname1-aero-std-vibtest-22.amazon.ca 1 2026-01-27 2026-01-27
cname2-aero-std-vibtest-22.amazon.ca 1 2026-01-27 2026-01-27
www22.amazon.ca 4 2025-09-24 2026-07-13
aero-standard-rtestinteg2.amazon.ca 2 2026-02-20 2026-07-08
dynamicmctesting2.amazon.ca 4 2025-07-18 2026-07-03
delegate-weblab-stesting2.amazon.ca 2 2026-03-09 2026-08-09
aero-standard-testing77-exp2.amazon.ca 2 2025-11-05 2026-10-06
cname-aero-standard-testing77-exp2.amazon.ca 2 2025-11-05 2026-10-06
aero-standard-testing78-exp2.amazon.ca 2 2025-11-05 2026-10-06
cert-creation-test2.amazon.ca 1 2025-09-06 2025-09-06
aero-cdn-testingv2.amazon.ca 2 2025-08-22 2025-08-22
opf-kuru-testing003.amazon.ca 2 2025-06-20 2026-05-21
opf-kuru-retesting003.amazon.ca 5 2025-08-13 2026-07-14
aero-standard-niktesting113.amazon.ca 1 2025-12-05 2025-12-05
cname1-aero-standard-niktesting113.amazon.ca 1 2025-12-05 2025-12-05
cname2-aero-standard-niktesting113.amazon.ca 1 2025-12-05 2025-12-05
aero-tailsyuxitesting123.amazon.ca 1 2025-07-25 2025-07-25
aero-standard-rtestinteg3.amazon.ca 2 2026-02-21 2026-07-09
cert-creation-test3.amazon.ca 1 2025-09-06 2025-09-06
aero-loggingyuxitest3.amazon.ca 1 2025-07-25 2025-07-25
opf-kuru-testing004.amazon.ca 2 2025-06-23 2026-05-24
opf-kuru-retesting004.amazon.ca 4 2025-08-25 2026-07-26
opf-kuru-protesting004.amazon.ca 5 2025-08-25 2026-07-26
aero-std-vibtest-24.amazon.ca 1 2026-01-26 2026-01-26
cname1-aero-std-vibtest-24.amazon.ca 1 2026-01-26 2026-01-26
cname2-aero-std-vibtest-24.amazon.ca 1 2026-01-26 2026-01-26
aero-non-standard-testing234.amazon.ca 4 2026-09-14 2026-09-14
origin-aero-non-standard-testing234.amazon.ca 2 2026-09-14 2026-09-14
aero-standard-testing84.amazon.ca 1 2026-01-05 2026-01-05
aero-standard-cname2-rtestinteg4.amazon.ca 2 2025-11-08 2025-11-08
aero-standard-cname3-rtestinteg4.amazon.ca 2 2025-11-08 2025-11-08
aero-standard-cname18-rtestinteg4.amazon.ca 1 2025-11-08 2025-11-08
aero-standard-cname88-rtestinteg4.amazon.ca 5 2025-11-08 2025-11-09
aero-standard-cname8-rtestinteg4.amazon.ca 1 2025-11-08 2025-11-08
aero-standard-rtestinteg4.amazon.ca 14 2025-11-08 2026-07-12
opf-kuru-retesting005.amazon.ca 5 2025-08-26 2026-07-27
aero-standard-testing85.amazon.ca 1 2026-01-06 2026-01-06
aerologs-tailsyuxi5.amazon.ca 1 2025-07-25 2025-07-25
opf-kuru-cname1-retesting006.amazon.ca 2 2025-11-12 2025-11-12
opf-kuru-cname2-retesting006.amazon.ca 2 2025-11-12 2025-11-12
opf-kuru-cname3-retesting006.amazon.ca 2 2025-11-12 2025-11-12
opf-kuru-cname4-retesting006.amazon.ca 1 2025-11-12 2025-11-12
opf-kuru-retesting006.amazon.ca 5 2025-08-27 2025-11-12
aerostandard-mcm16345026.amazon.ca 2 2025-08-01 2025-08-01
aero-standard-cname8-testing86.amazon.ca 1 2025-11-09 2025-11-09
aero-standard-testing86.amazon.ca 2 2025-11-09 2026-01-07
delegate-weblab-stesting67.amazon.ca 3 2026-04-03 2026-09-03
origin-delegate-weblab-stesting67.amazon.ca 1 2026-04-03 2026-04-03
aero-standard-testing87.amazon.ca 1 2026-01-25 2026-01-25
opf-kuru-testing008.amazon.ca 3 2025-07-13 2026-06-13
aero-standard-rtestinteg4-cname18.amazon.ca 3 2025-11-09 2025-11-09
aero-standard-rtestinteg4-cname28.amazon.ca 2 2025-11-09 2025-11-09
aero-non-standard-testing238.amazon.ca 2 2026-09-18 2026-10-05
origin-aero-non-standard-testing238.amazon.ca 1 2026-10-05 2026-10-05
aero-standard-rtestinteg4-cname38.amazon.ca 2 2025-11-09 2025-11-09

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/amazon.ca.

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/amazon.ca.