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) · 481 ms

HostCertsFirst seenLast seenDNS
westjet.com 2 2026-02-17 2026-08-17 ok
*.westjet.com 1 2026-02-17 2026-02-17 —
saz1psonarq01.westjet.com 2 2025-12-29 2025-12-29 nxdomain
vision-r1.westjet.com 1 2026-03-11 2026-03-11 ok
stage-vision-r1.westjet.com 1 2026-02-16 2026-02-16 ok
pricing-recos-r1.westjet.com 1 2026-06-04 2026-06-04 nxdomain
stage-pricing-recos-r1.westjet.com 2 2026-06-04 2026-06-04 ok
stauth02.westjet.com 3 2025-08-29 2025-11-10 nxdomain
stapr02.westjet.com 3 2025-08-29 2025-11-10 nxdomain
stroles02.westjet.com 3 2025-08-29 2025-11-10 nxdomain
flight-search-qa2.westjet.com 2 2026-05-29 2026-06-02 ok
digitalecomm-qa2.westjet.com 1 2026-06-02 2026-06-02 ok
flight-search-stg2.westjet.com 2 2026-05-29 2026-06-02 ok
digitalecomm-stg2.westjet.com 8 2026-05-29 2026-06-16 nxdomain
vision-r2.westjet.com 1 2026-03-11 2026-03-11 ok
stage-vision-r2.westjet.com 1 2026-02-16 2026-02-16 ok
pricing-recos-r2.westjet.com 1 2026-06-04 2026-06-04 nxdomain
stage-pricing-recos-r2.westjet.com 2 2026-06-04 2026-06-04 nxdomain
flight-search-dev2.westjet.com 2 2026-05-29 2026-06-02 ok
digitalecomm-dev2.westjet.com 1 2026-06-02 2026-06-02 ok
securewebservicesyc3.westjet.com 2 2025-08-20 2026-09-03 nxdomain
b9.westjet.com 1 2026-04-27 2026-04-27 ok
occb9.westjet.com 1 2025-09-03 2025-09-03 ok
WJDM.westjet.com 1 2025-11-17 2025-11-17 —
soteria.westjet.com 1 2025-11-06 2025-11-06 ok
stg-soteria.westjet.com 1 2025-11-06 2025-11-06 ok
test-soteria.westjet.com 1 2025-10-21 2025-10-21 ok
dev-soteria.westjet.com 1 2025-10-21 2025-10-21 ok
flight-search-qa.westjet.com 2 2026-05-29 2026-06-02 ok
digitalecomm-qa.westjet.com 2 2026-05-29 2026-06-02 ok
pctt-qa.westjet.com 1 2025-08-13 2025-08-13 ok
westjetbiz-qa.westjet.com 1 2026-06-17 2026-06-17 ok
stmmc-beta.westjet.com 1 2025-11-10 2025-11-10 ok
selfserve-beta.westjet.com 1 2025-11-10 2025-11-10 nxdomain
mmc-bff-beta.westjet.com 1 2025-11-10 2025-11-10 ok
stauth-beta.westjet.com 3 2025-08-29 2025-11-10 ok
selfserve-url-api-beta.westjet.com 1 2025-11-10 2025-11-10 nxdomain
stapr-beta.westjet.com 3 2025-08-29 2025-11-10 ok
stroles-beta.westjet.com 3 2025-08-29 2025-11-10 ok
visionweb.westjet.com 2 2026-05-21 2026-05-21 ok
stg-visionweb.westjet.com 2 2026-05-21 2026-05-21 ok
test-visionweb.westjet.com 2 2026-05-21 2026-05-21 ok
dev-visionweb.westjet.com 2 2026-05-21 2026-05-21 ok
ctweb.westjet.com 2 2025-08-14 2026-08-28 ok
stg-ctweb.westjet.com 4 2025-08-14 2026-08-28 ok
encorectweb.westjet.com 3 2025-08-14 2026-09-02 ok
stg-encorectweb.westjet.com 4 2025-08-14 2026-09-02 ok
hyb.westjet.com 1 2025-10-24 2025-10-24 ok
dc.westjet.com 31 2026-01-26 2026-10-04 ok
stmmc.westjet.com 2 2025-11-07 2025-11-10 ok
sonarqube.westjet.com 2 2025-12-29 2025-12-29 ok
hybe.westjet.com 1 2025-10-24 2025-10-24 ok
service.westjet.com 5 2026-05-29 2026-09-26 ok
prod-loungecapacity-mqttsource.westjet.com 1 2026-04-22 2026-04-22 nxdomain
m1.em.trade.westjet.com 3 2025-08-14 2026-08-10 ok
res1.em.trade.westjet.com 3 2025-08-14 2026-08-10 ok
t1.em.trade.westjet.com 3 2025-08-14 2026-08-10 ok
jde.westjet.com 1 2026-01-02 2026-01-02 ok
rfjde.westjet.com 2 2025-11-18 2025-11-25 ok
drjde.westjet.com 1 2026-09-24 2026-09-24 error
tstjde.westjet.com 1 2025-10-29 2025-10-29 ok
pyjde.westjet.com 1 2025-07-07 2025-07-07 ok
westjetagentdirect-stage.westjet.com 2 2026-03-16 2026-09-10 ok
mmc.st-stage.westjet.com 1 2025-11-07 2025-11-07 ok
selfserve.st-stage.westjet.com 1 2025-11-07 2025-11-07 ok
mmc-bff.st-stage.westjet.com 1 2025-11-07 2025-11-07 ok
auth.st-stage.westjet.com 2 2025-08-28 2025-11-07 ok
selfserve-url-api.st-stage.westjet.com 1 2025-11-07 2025-11-07 nxdomain
apr.st-stage.westjet.com 2 2025-08-28 2025-11-07 ok
roles.st-stage.westjet.com 2 2025-08-28 2025-11-07 ok
westjetbiz-stage.westjet.com 1 2026-02-09 2026-02-09 ok
profile.westjet.com 3 2025-08-12 2026-09-02 ok
staging-profile.westjet.com 1 2026-04-28 2026-04-28 nxdomain
securehome.westjet.com 2 2025-11-17 2026-02-26 ok
dc3securehome.westjet.com 2 2025-11-17 2026-02-26 ok
ycsecurehome.westjet.com 2 2025-11-17 2026-02-26 nxdomain
icasengine.westjet.com 1 2026-02-27 2026-02-27 ok
dc3-icasengine.westjet.com 1 2026-02-27 2026-02-27 ok
edc-icasengine.westjet.com 1 2026-02-27 2026-02-27 ok
wdc-icasengine.westjet.com 1 2026-02-27 2026-02-27 ok
url4831.nonprod-share.westjet.com 2 2026-09-23 2026-09-23 ok
url6102.nonprod-secure.westjet.com 2 2026-09-23 2026-09-23 ok
url7240.secure.westjet.com 2 2026-09-17 2026-09-17 ok
testcommonuse.westjet.com 1 2026-06-04 2026-06-04 nxdomain
update.westjet.com 1 2025-08-18 2025-08-18 ok
m.update.westjet.com 2 2025-08-18 2026-08-10 ok
res.update.westjet.com 2 2025-08-18 2026-08-10 ok
t.update.westjet.com 2 2025-08-18 2026-08-10 ok
selfserve.westjet.com 2 2025-11-07 2025-11-10 ok
mmc-bff.westjet.com 2 2025-11-07 2025-11-10 ok
m.prf.westjet.com 2 2025-08-18 2026-08-10 ok
res.prf.westjet.com 2 2025-08-18 2026-08-10 ok
t.prf.westjet.com 2 2025-08-18 2026-08-10 ok
smartbag.westjet.com 2 2025-08-26 2026-08-31 nxdomain
test-seceng.westjet.com 1 2025-11-15 2025-11-15 nxdomain
pay-booking.westjet.com 3 2025-08-12 2026-09-02 ok
pay-stagebooking.westjet.com 1 2026-04-28 2026-04-28 ok
pay-devbooking.westjet.com 1 2026-05-27 2026-05-27 ok
stg-signing.westjet.com 1 2026-05-27 2026-05-27 nxdomain
strategicplanning.westjet.com 3 2026-09-23 2026-09-23 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/westjet.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/westjet.com.