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) · 310 ms

HostCertsFirst seenLast seenDNS
ikyu.com 1 2026-01-04 2026-01-04 ok
*.ikyu.com 2 2025-11-11 2026-02-28 —
origin-stg-furusato-yahoo-2.ikyu.com 3 2026-05-21 2026-09-04 ok
origin-stg2-restaurant2.ikyu.com 3 2026-04-29 2026-08-16 ok
origin-prd-restaurant2.ikyu.com 3 2026-05-19 2026-09-05 ok
origin-stg-restaurant2.ikyu.com 4 2026-06-03 2026-09-18 ok
origin-prd-spa.ikyu.com 4 2026-06-03 2026-09-20 ok
origin-stg-spa.ikyu.com 3 2026-05-13 2026-08-28 ok
origin-st2-waikiki2-web.ikyu.com 4 2026-04-22 2026-09-28 ok
origin-st3-waikiki2-web.ikyu.com 3 2026-05-03 2026-08-19 ok
origin-prd-waikiki2-web.ikyu.com 3 2026-05-06 2026-08-24 ok
origin-st-waikiki2-web.ikyu.com 3 2026-05-07 2026-08-27 ok
origin-stg2-restaurant2-web.ikyu.com 3 2026-04-30 2026-08-16 ok
origin-prd-restaurant2-web.ikyu.com 3 2026-05-02 2026-08-19 ok
origin-stg-restaurant2-web.ikyu.com 3 2026-04-28 2026-08-18 ok
origin-prd-outbound.ikyu.com 3 2026-05-19 2026-09-06 ok
origin-stg-outbound.ikyu.com 3 2026-05-07 2026-08-20 ok
invoice.ikyu.com 3 2026-05-21 2026-09-07 ok
st-invoice.ikyu.com 3 2026-04-26 2026-08-16 ok
origin-prd-yahoo-travel-insurance.ikyu.com 3 2026-05-24 2026-09-06 ok
origin-stg-yahoo-travel-insurance.ikyu.com 3 2026-06-03 2026-09-20 ok
prdikyuconcierge.ikyu.com 12 2026-04-21 2026-08-17 ok
*.prdikyuconcierge.ikyu.com 12 2026-04-21 2026-08-17 —
stikyuconcierge.ikyu.com 10 2026-04-11 2026-08-07 ok
*.stikyuconcierge.ikyu.com 10 2026-04-11 2026-08-07 —
origin-dev-cloudrun-sample.ikyu.com 5 2026-04-15 2026-09-25 ok
otoriyose.ikyu.com 11 2026-04-12 2026-09-22 ok
stg-otoriyose.ikyu.com 18 2026-04-14 2026-09-27 ok
dev-otoriyose.ikyu.com 20 2026-04-07 2026-10-02 ok
origin-stay-reserve.ikyu.com 1 2026-09-07 2026-09-07 nxdomain
origin-stg2-restaurant2-bff.ikyu.com 5 2026-04-10 2026-09-23 ok
origin-prd-restaurant2-bff.ikyu.com 3 2026-04-27 2026-08-14 ok
origin-stg-restaurant2-bff.ikyu.com 8 2026-05-13 2026-08-31 ok
origin-stg2-ppg.ikyu.com 5 2026-04-16 2026-09-24 ok
origin-prd-restaurant2-web-ppg.ikyu.com 3 2026-04-29 2026-08-17 ok
origin-stg-restaurant2-web-ppg.ikyu.com 6 2026-04-22 2026-10-02 ok
origin-prd-ppg.ikyu.com 3 2026-05-01 2026-08-21 ok
origin-stg-ppg.ikyu.com 5 2026-04-17 2026-09-29 ok
origin-prd-concierge-api.ikyu.com 5 2026-04-22 2026-10-02 ok
origin-stg-concierge-api.ikyu.com 3 2026-05-20 2026-09-04 ok
origin-st2-waikiki2-web-y-travel-regional.ikyu.com 3 2026-05-07 2026-08-22 ok
origin-st3-waikiki2-web-y-travel-regional.ikyu.com 3 2026-05-05 2026-08-21 ok
origin-waikiki2-web-y-travel-regional.ikyu.com 3 2026-05-06 2026-08-25 ok
origin-st2-waikiki2-bff-nuxt-y-travel-regional.ikyu.com 3 2026-05-17 2026-09-03 ok
origin-st3-waikiki2-bff-nuxt-y-travel-regional.ikyu.com 3 2026-05-18 2026-08-31 ok
origin-prd-waikiki2-bff-nuxt-y-travel-regional.ikyu.com 3 2026-05-17 2026-08-29 ok
origin-st2-member-yahootravel-regional.ikyu.com 6 2026-05-26 2026-09-14 ok
origin-member-yahootravel-regional.ikyu.com 4 2026-05-27 2026-09-16 ok
origin-st-member-yahootravel-regional.ikyu.com 4 2026-06-01 2026-09-18 ok
origin-st2-member-regional.ikyu.com 3 2026-05-27 2026-09-10 ok
origin-member-regional.ikyu.com 5 2026-05-30 2026-09-13 ok
origin-st-member-regional.ikyu.com 3 2026-05-26 2026-09-08 ok
origin-st2-member-paypaygourmet-regional.ikyu.com 4 2026-06-01 2026-09-19 ok
origin-member-paypaygourmet-regional.ikyu.com 5 2026-06-02 2026-09-21 ok
origin-st-member-paypaygourmet-regional.ikyu.com 3 2026-05-25 2026-09-11 ok
origin-st2-waikiki2-bff-nuxt-regional.ikyu.com 3 2026-05-04 2026-08-21 ok
origin-st3-waikiki2-bff-nuxt-regional.ikyu.com 4 2026-05-02 2026-08-17 ok
origin-waikiki2-bff-nuxt-regional.ikyu.com 3 2026-05-07 2026-08-22 ok
origin-st-waikiki2-bff-nuxt-regional.ikyu.com 3 2026-05-06 2026-08-25 ok
origin-st3-waikiki2-bff-nuxt-y-travel-canary-regional.ikyu.com 3 2026-05-20 2026-09-05 ok
origin-prd-waikiki2-bff-nuxt-y-travel-canary-regional.ikyu.com 3 2026-05-18 2026-09-04 ok
*.internal.ikyu.com 5 2026-05-21 2026-09-18 —
stay-sales-portal.ikyu.com 4 2026-06-11 2026-09-25 ok
origin-st3-waikiki2-web-y-travel-booking-renewal.ikyu.com 4 2026-06-02 2026-09-17 ok
origin-st3-waikiki2-bff-nuxt-y-travel-booking-renewal.ikyu.com 4 2026-06-02 2026-09-15 ok
origin-st2-waikiki2-web-y-travel.ikyu.com 3 2026-05-26 2026-09-12 ok
origin-st3-waikiki2-web-y-travel.ikyu.com 4 2026-05-31 2026-09-18 ok
origin-prd-waikiki2-web-y-travel.ikyu.com 3 2026-05-16 2026-09-08 ok
origin-st2-waikiki2-bff-nuxt-y-travel.ikyu.com 3 2026-05-23 2026-09-10 ok
origin-st3-waikiki2-bff-nuxt-y-travel.ikyu.com 3 2026-05-25 2026-09-14 ok
origin-prd-waikiki2-bff-nuxt-y-travel.ikyu.com 3 2026-05-28 2026-09-12 ok
origin-st2-member-yahootravel.ikyu.com 6 2026-04-12 2026-09-24 ok
origin-member-yahootravel.ikyu.com 4 2026-04-11 2026-09-18 ok
origin-st-member-yahootravel.ikyu.com 4 2026-05-21 2026-09-07 ok
origin-prd-platform.ikyu.com 5 2026-04-12 2026-09-26 ok
origin-stg-platform.ikyu.com 5 2026-04-11 2026-09-21 ok
cdn.ikyu.com 6 2026-06-25 2026-10-03 ok
origin-st2-waikiki2-admin.ikyu.com 3 2026-04-26 2026-08-15 ok
origin-st3-waikiki2-admin.ikyu.com 5 2026-04-11 2026-09-23 ok
origin-prd-waikiki2-admin.ikyu.com 5 2026-04-17 2026-09-27 ok
origin-st-waikiki2-admin.ikyu.com 5 2026-04-18 2026-10-03 ok
origin-prd-otoriyose-admin.ikyu.com 4 2026-04-18 2026-09-29 ok
origin-stg-otoriyose-admin.ikyu.com 3 2026-05-04 2026-08-21 ok
origin-prd-vic-salon-admin.ikyu.com 3 2026-05-18 2026-09-05 ok
origin-stg-vic-salon-admin.ikyu.com 3 2026-05-18 2026-09-01 ok
origin-member-admin.ikyu.com 5 2026-04-24 2026-10-04 ok
st-origin-member-admin.ikyu.com 5 2026-04-23 2026-10-04 ok
outbound-prd-pgadmin.ikyu.com 3 2026-04-29 2026-08-14 ok
platform-prd-pgadmin.ikyu.com 2 2026-05-30 2026-07-21 ok
outbound-stg-pgadmin.ikyu.com 5 2026-05-29 2026-09-13 ok
platform-stg-pgadmin.ikyu.com 3 2026-04-20 2026-08-04 ok
prd-otoriyose-phpmyadmin.ikyu.com 3 2026-05-10 2026-08-28 ok
stg-otoriyose-phpmyadmin.ikyu.com 3 2026-04-22 2026-08-08 ok
prd-furusato-asynqmon.ikyu.com 4 2026-04-19 2026-09-29 ok
stg-furusato-asynqmon.ikyu.com 3 2026-05-24 2026-09-09 ok
origin-stg2-macaron.ikyu.com 3 2026-05-02 2026-08-19 ok
origin-prd-macaron.ikyu.com 3 2026-05-17 2026-09-02 ok
origin-stg-macaron.ikyu.com 3 2026-04-25 2026-08-12 ok
origin-prd-furusato-yahoo.ikyu.com 5 2026-04-14 2026-09-22 ok
origin-stg-furusato-yahoo.ikyu.com 5 2026-04-12 2026-09-25 ok

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/ikyu.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/ikyu.com.