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.

93 hosts · 514 ms

HostCertsFirst seenLast seenDNS
sonesta.com 23 2026-04-09 2026-10-03 ok
*.sonesta.com 17 2026-04-13 2026-10-03 —
ph-tpdmzimp01.sonesta.com 4 2026-05-12 2026-07-22 ok
stage2.sonesta.com 2 2026-08-28 2026-08-28 ok
mobile-stage2.sonesta.com 1 2026-08-28 2026-08-28 ok
ww3.sonesta.com 5 2026-05-18 2026-09-15 ok
thespa.sonesta.com 5 2026-05-24 2026-09-21 ok
tmc.sonesta.com 5 2026-05-14 2026-09-11 ok
nyc.sonesta.com 5 2026-05-11 2026-09-08 ok
email-nyc.sonesta.com 4 2026-04-12 2026-08-10 ok
stay-nyc.sonesta.com 4 2026-04-12 2026-08-10 ok
preferred.sonesta.com 5 2026-05-09 2026-09-06 ok
sonestaglobalpreferred.sonesta.com 5 2026-04-30 2026-08-28 ok
build.sonesta.com 4 2026-04-18 2026-08-16 ok
affinitygold.sonesta.com 5 2026-04-30 2026-08-28 ok
adventurebound.sonesta.com 5 2026-05-11 2026-09-08 ok
resetpassword.sonesta.com 5 2026-05-26 2026-09-23 ok
image.e.sonesta.com 3 2026-01-14 2026-08-31 ok
click.e.sonesta.com 1 2025-11-05 2025-11-05 ok
pages.e.sonesta.com 1 2025-11-05 2025-11-05 ok
view.e.sonesta.com 1 2025-11-04 2025-11-04 ok
selfservice.sonesta.com 5 2026-04-30 2026-08-28 ok
stage.sonesta.com 5 2026-04-28 2026-08-26 ok
mobile-stage.sonesta.com 5 2026-05-29 2026-09-26 ok
merge.sonesta.com 4 2026-04-18 2026-08-16 ok
make.sonesta.com 4 2026-04-18 2026-08-16 ok
mobile.sonesta.com 4 2026-04-18 2026-08-16 ok
one.sonesta.com 4 2026-04-18 2026-08-16 ok
core.sonesta.com 12 2026-04-26 2026-08-22 ok
franchise.sonesta.com 5 2026-04-30 2026-08-28 ok
staging.sonesta.com 4 2026-04-18 2026-08-16 ok
email.booking.sonesta.com 6 2026-05-05 2026-09-01 ok
blog.sonesta.com 5 2026-05-13 2026-09-10 ok
ftlauderdalebeach.sonesta.com 5 2026-05-08 2026-09-05 ok
auth.sonesta.com 10 2026-04-30 2026-08-26 ok
loyalty-api.sonesta.com 3 2026-01-19 2026-07-09 ok
gapi.sonesta.com 3 2026-03-27 2026-09-12 ok
www.gapi.sonesta.com 3 2026-03-27 2026-09-12 nxdomain
book.sonesta.com 30 2026-05-09 2026-10-05 ok
ask.sonesta.com 5 2026-05-26 2026-09-23 ok
linksquares.legal.sonesta.com 5 2026-04-27 2026-08-25 ok
resourceportal.sonesta.com 5 2026-06-05 2026-10-03 ok
offboardingportal.sonesta.com 5 2026-04-24 2026-08-22 ok
capitolhillroyal.sonesta.com 4 2026-04-14 2026-08-12 ok
sanjuanroyal.sonesta.com 5 2026-05-16 2026-09-13 ok
neworleansroyal.sonesta.com 5 2026-05-05 2026-09-02 ok
thewthotel.sonesta.com 5 2026-04-28 2026-08-26 ok
webmail.sonesta.com 2 2026-04-08 2026-04-08 ok
newsroom.sonesta.com 5 2026-05-20 2026-09-17 ok
affinityplatinum.sonesta.com 5 2026-05-02 2026-08-30 ok
innovation.sonesta.com 5 2026-05-26 2026-09-23 ok
svopn.sonesta.com 1 2025-11-13 2025-11-13 ok
*.svopn.sonesta.com 1 2025-11-13 2025-11-13 —
dbstudio.sonesta.com 5 2026-05-03 2026-08-31 ok
auto.sonesta.com 4 2026-04-18 2026-08-16 ok
webinar.sonesta.com 5 2026-05-26 2026-09-23 ok
autodiscover.sonesta.com 2 2026-04-08 2026-04-08 ok
www.autodiscover.sonesta.com 2 2026-04-08 2026-04-08 nxdomain
concur.sonesta.com 5 2026-05-26 2026-09-23 ok
costasur.sonesta.com 5 2026-05-20 2026-09-17 ok
sas.sonesta.com 2 2026-04-08 2026-04-08 ok
thejames.sonesta.com 5 2026-04-22 2026-08-20 ok
contractorcourses.sonesta.com 5 2026-04-28 2026-08-26 ok
liveaccess.exclusives.sonesta.com 4 2026-06-06 2026-10-04 ok
tools.sonesta.com 5 2026-05-18 2026-09-15 ok
functions.sonesta.com 5 2026-05-24 2026-09-21 ok
careers.sonesta.com 1 2025-10-28 2025-10-28 ok
www.careers.sonesta.com 1 2025-10-28 2025-10-28 nxdomain
travelpass.sonesta.com 4 2026-04-12 2026-08-10 ok
partnershippass.sonesta.com 5 2026-05-02 2026-08-30 ok
businesspass.sonesta.com 5 2026-05-03 2026-08-30 ok
events.sonesta.com 5 2026-05-24 2026-09-21 ok
mta-sts.sonesta.com 2 2025-07-08 2026-06-08 ok
connect.sonesta.com 14 2026-05-15 2026-09-10 ok
loyalty-api-tally-client.sonesta.com 2 2026-06-15 2026-08-25 nxdomain
www.loyalty-api-tally-client.sonesta.com 2 2026-06-15 2026-08-25 nxdomain
unlockaccount.sonesta.com 5 2026-05-26 2026-09-23 ok
hiltonheadresort.sonesta.com 4 2026-04-14 2026-08-12 ok
kauairesort.sonesta.com 4 2026-04-09 2026-08-07 ok
test.sonesta.com 5 2026-04-28 2026-08-26 ok
mobile-test.sonesta.com 4 2026-04-18 2026-08-16 ok
tools-test.sonesta.com 5 2026-04-25 2026-08-23 ok
franchisetest.sonesta.com 5 2026-04-30 2026-08-27 ok
authtest.sonesta.com 10 2026-04-30 2026-08-26 ok
grouprequest.sonesta.com 5 2026-05-14 2026-09-11 ok
dev.sonesta.com 5 2026-04-29 2026-08-27 ok
mobile-dev.sonesta.com 5 2026-04-25 2026-08-23 ok
loyalty-api-dev.sonesta.com 3 2026-01-21 2026-07-09 ok
loyalty-api-tally-client-dev.sonesta.com 4 2025-06-17 2026-08-25 nxdomain
www.loyalty-api-tally-client-dev.sonesta.com 4 2025-06-17 2026-08-25 nxdomain
sv.sonesta.com 6 2026-03-30 2026-09-14 ok
www.sonesta.com 4 2026-04-09 2026-08-12 ok
box.sonesta.com 5 2026-05-26 2026-09-23 ok

Programmatic access, with DNS A records: API GET /v1/hosts/sonesta.com (API key for paging).

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/sonesta.com.