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) · 467 ms

HostCertsFirst seenLast seenDNS
firsthorizon.com 34 2025-09-08 2026-09-28 ok
*.firsthorizon.com 12 2025-09-23 2026-09-28 —
domain-1.firsthorizon.com 2 2025-10-29 2025-10-29 nxdomain
kurrentdb-aks-dv-devops-0001.firsthorizon.com 1 2025-12-10 2025-12-10 nxdomain
DC0PZSIR01.firsthorizon.com 1 2025-08-13 2025-08-13 —
ftps.qa01.firsthorizon.com 1 2026-04-02 2026-04-02 nxdomain
sitenet.qa01.firsthorizon.com 2 2026-03-09 2026-09-02 nxdomain
argocd-qa1.firsthorizon.com 1 2026-06-07 2026-06-07 nxdomain
argocd-emergtech-qa1.firsthorizon.com 1 2026-05-01 2026-05-01 nxdomain
argo-emergtech-qa1.firsthorizon.com 1 2026-05-01 2026-05-01 nxdomain
kargo-qa1.firsthorizon.com 1 2026-05-04 2026-05-04 nxdomain
argocd-prod1.firsthorizon.com 1 2026-06-07 2026-06-07 nxdomain
analyst.prd1.firsthorizon.com 2 2026-03-23 2026-10-05 nxdomain
voipexpe1.firsthorizon.com 2 2025-09-08 2026-08-24 ok
secure1.firsthorizon.com 1 2025-11-21 2025-11-21 ok
argocd-apibkng1.firsthorizon.com 1 2026-01-23 2026-01-23 nxdomain
fhbsccmcmgfh1.firsthorizon.com 6 2026-03-06 2026-09-29 ok
securets1.firsthorizon.com 1 2025-10-29 2025-10-29 ok
analyst.tst1.firsthorizon.com 2 2026-03-23 2026-10-04 nxdomain
Analyst.dev1.firsthorizon.com 2 2026-03-18 2026-09-28 —
MaryvilleCube-2.firsthorizon.com 2 2025-12-18 2026-01-09 —
MemphisCube-2.firsthorizon.com 3 2025-12-18 2026-01-09 —
domain-2.firsthorizon.com 2 2025-10-29 2025-10-29 nxdomain
privacera-edh-prod-ft142.firsthorizon.com 2 2026-03-06 2026-03-07 nxdomain
argocd-qa2.firsthorizon.com 1 2026-06-07 2026-06-07 nxdomain
argocd-emergtech-qa2.firsthorizon.com 1 2026-05-01 2026-05-01 nxdomain
argo-emergtech-qa2.firsthorizon.com 1 2026-05-01 2026-05-01 nxdomain
kargo-qa2.firsthorizon.com 1 2026-05-04 2026-05-04 nxdomain
argocd-prod2.firsthorizon.com 1 2026-06-07 2026-06-07 nxdomain
analyst.prd2.firsthorizon.com 2 2026-03-23 2026-10-05 nxdomain
voipexpe2.firsthorizon.com 2 2025-09-08 2026-08-24 ok
secure2.firsthorizon.com 1 2025-11-21 2025-11-21 ok
argocd-apibkng2.firsthorizon.com 1 2026-01-23 2026-01-23 nxdomain
go2.firsthorizon.com 2 2026-09-09 2026-09-09 nxdomain
ssoservices2.firsthorizon.com 1 2025-11-19 2025-11-19 ok
securets2.firsthorizon.com 1 2025-10-29 2025-10-29 ok
LabCertTest2.firsthorizon.com 1 2026-05-05 2026-05-05 —
analyst.tst2.firsthorizon.com 2 2026-03-23 2026-10-04 nxdomain
analyst.dev2.firsthorizon.com 2 2026-03-18 2026-09-28 nxdomain
www2.firsthorizon.com 12 2025-11-10 2026-09-24 ok
tunnel-dc3.firsthorizon.com 1 2026-02-05 2026-02-05 ok
prod.d3.firsthorizon.com 3 2026-03-10 2026-05-01 nxdomain
nonprod.d3.firsthorizon.com 2 2025-12-09 2025-12-09 nxdomain
voipexpe3.firsthorizon.com 2 2025-09-08 2026-08-24 ok
secure3.firsthorizon.com 1 2025-11-07 2025-11-07 ok
tunnel-dc4.firsthorizon.com 1 2026-02-05 2026-02-05 ok
voipexpe4.firsthorizon.com 2 2025-09-08 2026-08-24 ok
secure4.firsthorizon.com 1 2025-11-07 2025-11-07 ok
l2.j5.firsthorizon.com 1 2026-09-23 2026-09-23 nxdomain
bastian.j5.firsthorizon.com 2 2026-09-22 2026-09-22 nxdomain
jackson.j5.firsthorizon.com 2 2026-09-15 2026-09-15 nxdomain
tyler.j5.firsthorizon.com 2 2026-09-22 2026-09-22 nxdomain
bryant.j5.firsthorizon.com 1 2026-09-22 2026-09-22 nxdomain
FusionAPprintQA.firsthorizon.com 2 2025-07-30 2026-07-21 —
secure1a.firsthorizon.com 1 2025-11-21 2025-11-21 ok
secure2a.firsthorizon.com 1 2025-11-21 2025-11-21 ok
Secure3a.firsthorizon.com 1 2025-11-07 2025-11-07 —
Secure4a.firsthorizon.com 1 2025-11-07 2025-11-07 —
prda.firsthorizon.com 3 2025-07-09 2026-06-08 nxdomain
ftps.prda.firsthorizon.com 3 2026-02-23 2026-03-07 nxdomain
www.prda.firsthorizon.com 3 2025-07-09 2026-06-08 nxdomain
ftps.fxpa.firsthorizon.com 3 2026-02-23 2026-03-07 nxdomain
sitenet.fxpa.firsthorizon.com 2 2026-03-11 2026-09-09 nxdomain
argocd-qa.firsthorizon.com 2 2026-06-07 2026-07-15 nxdomain
sfg-qa.firsthorizon.com 1 2025-09-02 2025-09-02 nxdomain
argocd-digeng-qa.firsthorizon.com 6 2025-08-07 2026-05-14 nxdomain
argocd-apibkng-qa.firsthorizon.com 1 2026-01-23 2026-01-23 nxdomain
jfrog-qa.firsthorizon.com 2 2026-05-12 2026-05-28 nxdomain
argocd-emergtech-qa.firsthorizon.com 1 2026-05-01 2026-05-01 nxdomain
argo-emergtech-qa.firsthorizon.com 1 2026-05-01 2026-05-01 nxdomain
cbci-qa.firsthorizon.com 3 2026-05-06 2026-05-28 nxdomain
partnerapi-qa.firsthorizon.com 4 2025-11-25 2026-01-20 ok
ssoportal-qa.firsthorizon.com 5 2025-09-12 2026-09-08 nxdomain
argocd-datastream-qa.firsthorizon.com 1 2026-02-17 2026-02-17 nxdomain
ews-conn-qa.firsthorizon.com 1 2026-03-13 2026-03-13 nxdomain
kargo-qa.firsthorizon.com 1 2026-05-04 2026-05-04 nxdomain
rpp-qa.firsthorizon.com 5 2026-03-18 2026-08-26 nxdomain
oft-qa.firsthorizon.com 1 2025-09-02 2025-09-02 ok
nx-qa.firsthorizon.com 2 2025-07-30 2026-07-22 nxdomain
security-qa.firsthorizon.com 2 2026-04-18 2026-04-29 ok
iapqa.firsthorizon.com 5 2025-10-17 2026-09-23 ok
owa.firsthorizon.com 3 2025-09-18 2026-08-26 ok
secure1b.firsthorizon.com 1 2025-11-21 2025-11-21 ok
secure2b.firsthorizon.com 1 2025-11-21 2025-11-21 ok
Secure3b.firsthorizon.com 1 2025-11-07 2025-11-07 —
Secure4b.firsthorizon.com 1 2025-11-07 2025-11-07 —
argocd-lab.firsthorizon.com 1 2026-06-07 2026-06-07 nxdomain
toolhive-lab.firsthorizon.com 1 2026-06-07 2026-06-07 nxdomain
jfrog-lab.firsthorizon.com 1 2026-05-06 2026-05-06 nxdomain
cbci-lab.firsthorizon.com 1 2026-04-13 2026-04-13 nxdomain
nx-lab.firsthorizon.com 1 2026-06-07 2026-06-07 nxdomain
upbound-proxy-lab.firsthorizon.com 1 2025-11-20 2025-11-20 nxdomain
rolb.firsthorizon.com 1 2025-11-06 2025-11-06 ok
ftps.devb.firsthorizon.com 3 2026-02-23 2026-03-07 nxdomain
secure1c.firsthorizon.com 1 2025-11-21 2025-11-21 ok
secure2c.firsthorizon.com 1 2025-11-21 2025-11-21 ok
Secure3c.firsthorizon.com 1 2025-11-07 2025-11-07 —
Secure4c.firsthorizon.com 1 2025-11-07 2025-11-07 —
rdc.firsthorizon.com 3 2025-09-02 2026-08-11 nxdomain
epic.firsthorizon.com 3 2026-03-02 2026-08-19 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/firsthorizon.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/firsthorizon.com.