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.

61 hosts · 350 ms

HostCertsFirst seenLast seenDNS
selecthealth.org 23 2025-12-05 2026-09-22 ok
*.selecthealth.org 18 2026-04-28 2026-09-22 —
mk-sa01.selecthealth.org 1 2026-01-08 2026-01-08 ok
tn-sa01.selecthealth.org 1 2026-01-08 2026-01-08 ok
lp-sa01.selecthealth.org 1 2026-01-08 2026-01-08 ok
ea.selecthealth.org 1 2025-12-10 2025-12-10 ok
pa.selecthealth.org 1 2025-12-10 2025-12-10 ok
eob.selecthealth.org 5 2026-07-31 2026-09-28 ok
email.eob.selecthealth.org 5 2026-05-30 2026-09-27 ok
aemprod.selecthealth.org 4 2025-12-05 2026-09-09 ok
www.aemprod.selecthealth.org 4 2025-12-05 2026-09-09 nxdomain
iwsd.selecthealth.org 1 2026-05-28 2026-05-28 nxdomain
aemstage.selecthealth.org 5 2025-12-05 2026-08-13 ok
www.aemstage.selecthealth.org 5 2025-12-05 2026-08-13 nxdomain
cloud.marketing.selecthealth.org 1 2025-11-06 2025-11-06 ok
image.marketing.selecthealth.org 3 2026-01-21 2026-01-27 ok
click.marketing.selecthealth.org 1 2025-11-06 2025-11-06 ok
view.marketing.selecthealth.org 1 2025-11-06 2025-11-06 ok
outreach.selecthealth.org 5 2026-07-31 2026-09-28 ok
email.outreach.selecthealth.org 5 2026-05-30 2026-09-27 ok
myhealth.selecthealth.org 7 2026-07-31 2026-09-28 ok
www.myhealth.selecthealth.org 7 2026-07-31 2026-09-28 ok
api.selecthealth.org 9 2025-10-10 2026-09-30 ok
providerportal.selecthealth.org 10 2026-04-21 2026-08-17 ok
login.selecthealth.org 1 2025-12-10 2025-12-10 ok
info.selecthealth.org 3 2026-03-26 2026-09-09 ok
www.info.selecthealth.org 3 2026-03-26 2026-09-09 ok
prodinfo.selecthealth.org 3 2026-03-26 2026-09-09 ok
stageinfo.selecthealth.org 4 2026-03-26 2026-08-13 ok
devinfo.selecthealth.org 4 2026-03-26 2026-08-13 ok
sso.selecthealth.org 2 2026-07-06 2026-08-27 ok
shop.selecthealth.org 7 2026-07-31 2026-09-28 ok
member.selecthealth.org 3 2026-03-26 2026-09-09 ok
www.member.selecthealth.org 3 2026-03-26 2026-09-09 ok
prodmember.selecthealth.org 3 2026-03-26 2026-09-09 ok
stagemember.selecthealth.org 4 2026-03-26 2026-08-13 ok
devmember.selecthealth.org 4 2026-03-26 2026-08-13 ok
autodiscover.selecthealth.org 2 2026-04-01 2026-04-07 ok
forms.selecthealth.org 2 2026-05-22 2026-05-26 nxdomain
www.forms.selecthealth.org 2 2026-05-22 2026-05-26 nxdomain
secureaccess.selecthealth.org 1 2026-01-08 2026-01-08 ok
accounts.selecthealth.org 12 2026-05-27 2026-09-22 ok
discounts.selecthealth.org 4 2026-04-19 2026-08-17 ok
iws.selecthealth.org 1 2026-05-28 2026-05-28 ok
www.iws.selecthealth.org 1 2026-05-28 2026-05-28 nxdomain
account.selecthealth.org 4 2026-06-29 2026-08-27 ok
tst.account.selecthealth.org 8 2026-07-16 2026-09-14 ok
dev.account.selecthealth.org 4 2026-07-15 2026-09-12 ok
tst.selecthealth.org 6 2025-07-12 2026-08-13 ok
*.tst.selecthealth.org 27 2026-04-24 2026-09-27 —
api.tst.selecthealth.org 10 2025-10-10 2026-09-30 ok
providerportal.tst.selecthealth.org 14 2026-04-21 2026-08-17 ok
forms.tst.selecthealth.org 1 2026-05-22 2026-05-22 nxdomain
www.forms.tst.selecthealth.org 1 2026-05-22 2026-05-22 nxdomain
www.tst.selecthealth.org 6 2025-07-12 2026-08-13 nxdomain
ssotst.selecthealth.org 3 2026-06-16 2026-08-27 ok
iwst.selecthealth.org 1 2026-05-28 2026-05-28 ok
api.dev.selecthealth.org 2 2025-10-10 2026-09-23 nxdomain
aemdev.selecthealth.org 5 2025-12-05 2026-08-13 nxdomain
www.aemdev.selecthealth.org 5 2025-12-05 2026-08-13 nxdomain
www.selecthealth.org 4 2025-12-05 2026-09-09 ok

Programmatic access, with DNS A records: API GET /v1/hosts/selecthealth.org (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/selecthealth.org.