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) · 448 ms

HostCertsFirst seenLast seenDNS
penfed.org 5 2025-09-23 2026-10-05 ok
AWS-PNGSYNPR01.penfed.org 1 2026-08-06 2026-08-06 —
dc1-psn-pr01.penfed.org 7 2025-08-14 2026-08-28 nxdomain
dr1-psn-pr01.penfed.org 7 2025-08-14 2026-08-28 nxdomain
sso-qa-SAML-Q1.penfed.org 1 2025-12-04 2025-12-04 —
sso-SAML-Q1.penfed.org 1 2025-12-10 2025-12-10 —
cert1.penfed.org 3 2025-10-15 2026-09-17 ok
AWS-PNGSYNPR02.penfed.org 1 2026-08-06 2026-08-06 —
dc1-gwifi02.penfed.org 7 2025-08-14 2026-08-28 ok
dr1-gwifi02.penfed.org 7 2025-08-14 2026-08-28 ok
dc1-psn-pr02.penfed.org 7 2025-08-14 2026-08-28 nxdomain
dr1-psn-pr02.penfed.org 7 2025-08-14 2026-08-28 nxdomain
sso-qa-SAML-Q2.penfed.org 1 2026-02-26 2026-02-26 —
sso-SAML-Q2.penfed.org 1 2026-02-26 2026-02-26 —
sso-qa2.penfed.org 2 2026-06-30 2026-07-13 ok
commauth2.penfed.org 5 2026-06-16 2026-08-21 ok
qacommauth2.penfed.org 4 2026-06-16 2026-07-13 ok
devcommauth2.penfed.org 5 2026-06-16 2026-07-13 ok
QA.api2.penfed.org 4 2026-01-16 2026-07-13 —
TR.api2.penfed.org 4 2026-01-16 2026-07-13 —
prod.api2.penfed.org 1 2026-02-09 2026-02-09 ok
Dev.api2.penfed.org 4 2026-01-16 2026-07-13 —
sso2.penfed.org 4 2026-06-30 2026-08-21 ok
cert2.penfed.org 3 2025-10-15 2026-09-17 ok
dc1-gwifi03.penfed.org 7 2025-08-14 2026-08-28 ok
dr1-gwifi03.penfed.org 7 2025-08-14 2026-08-28 ok
dc1-psn-pr03.penfed.org 7 2025-08-14 2026-08-28 nxdomain
dr1-psn-pr03.penfed.org 7 2025-08-14 2026-08-28 nxdomain
cert3.penfed.org 3 2025-10-15 2026-09-17 ok
cert1-4.penfed.org 1 2025-10-15 2025-10-15 nxdomain
sso-qa-SAML-Q4.penfed.org 1 2025-08-14 2025-08-14 —
sso-SAML-Q4.penfed.org 1 2025-08-14 2025-08-14 —
cert4.penfed.org 3 2025-10-15 2026-09-17 ok
VPNQA.penfed.org 2 2025-08-20 2026-09-03 —
SecuredocsCloudQA.penfed.org 1 2026-07-14 2026-07-14 —
SAML-MemberQA.penfed.org 2 2025-08-04 2026-08-07 —
printnode-NPR.penfed.org 1 2026-07-24 2026-07-24 —
Internal.printnode-NPR.penfed.org 1 2026-07-24 2026-07-24 —
AWS-PNGSYNPR.penfed.org 1 2026-08-06 2026-08-06 —
qa.penfed.org 8 2025-07-11 2026-09-08 ok
pfcuma-qa.penfed.org 6 2026-01-16 2026-08-28 ok
internal-pfcuma-qa.penfed.org 2 2026-03-05 2026-08-28 nxdomain
mobile-qa.penfed.org 2 2026-03-04 2026-09-08 nxdomain
mail-content.dcc-mail-qa.penfed.org 2 2025-06-25 2026-06-25 ok
nmLogin-qa.penfed.org 1 2025-10-22 2025-10-22 —
login-qa.penfed.org 4 2025-10-07 2026-06-19 ok
sso-qa.penfed.org 5 2026-01-16 2026-07-13 ok
passwordreset-qa.penfed.org 3 2026-05-19 2026-07-13 ok
extauthgw-qa.penfed.org 2 2025-07-28 2026-08-07 nxdomain
www1.extauthgw-qa.penfed.org 2 2025-07-28 2026-08-07 nxdomain
www2.extauthgw-qa.penfed.org 2 2025-07-28 2026-08-07 nxdomain
flx-qa.penfed.org 6 2025-10-10 2026-09-25 ok
internal.flx-qa.penfed.org 1 2025-10-10 2025-10-10 nxdomain
blog.qa.penfed.org 1 2025-09-23 2025-09-23 nxdomain
espanol.qa.penfed.org 1 2025-09-23 2025-09-23 nxdomain
publisher.qa.penfed.org 1 2025-09-23 2025-09-23 ok
author.qa.penfed.org 1 2025-09-23 2025-09-23 ok
services.qa.penfed.org 1 2025-09-23 2025-09-23 nxdomain
careers.qa.penfed.org 1 2025-09-23 2025-09-23 nxdomain
homeqa.penfed.org 6 2026-01-16 2026-09-08 ok
mobilehomeqa.penfed.org 4 2026-01-16 2026-07-13 nxdomain
onlineqa.penfed.org 4 2026-01-16 2026-07-13 nxdomain
penfedsfqa.penfed.org 2 2025-10-28 2025-10-28 nxdomain
mail-content.bankingqa.penfed.org 2 2025-10-10 2025-10-17 ok
consumer-content.bankingqa.penfed.org 2 2025-10-10 2025-10-17 ok
ssoqa.penfed.org 1 2026-04-30 2026-04-30 ok
consumerloansqa.penfed.org 1 2025-10-03 2025-10-03 nodata
www1.consumerloansqa.penfed.org 1 2025-10-03 2025-10-03 ok
edoc.consumerloansqa.penfed.org 1 2026-01-02 2026-01-02 ok
docs.consumerloansqa.penfed.org 2 2025-10-15 2025-10-22 nxdomain
www.consumerloansqa.penfed.org 1 2025-10-03 2025-10-03 ok
hybrid.penfed.org 4 2026-03-19 2026-09-21 ok
SAML-MemberProd.penfed.org 2 2025-09-11 2026-09-08 —
Penfed-SOESAML-prod.penfed.org 1 2026-01-02 2026-01-02 —
publish1.prod.penfed.org 1 2025-10-16 2025-10-16 nxdomain
publish2.prod.penfed.org 1 2025-10-16 2025-10-16 nxdomain
author.prod.penfed.org 1 2025-10-16 2025-10-16 nxdomain
services.prod.penfed.org 1 2025-10-16 2025-10-16 nxdomain
Penfed-SOESAML-nonprod.penfed.org 1 2026-01-02 2026-01-02 —
sso-prd.penfed.org 1 2026-05-26 2026-05-26 ok
SecuredocsCloud.penfed.org 3 2025-09-03 2026-08-26 —
cloud.message.penfed.org 2 2026-04-10 2026-04-30 ok
image.message.penfed.org 3 2026-02-16 2026-09-30 ok
click.message.penfed.org 2 2026-04-10 2026-04-30 ok
view.message.penfed.org 2 2026-04-10 2026-04-30 ok
stage.penfed.org 7 2025-09-23 2026-09-08 ok
publish1.stage.penfed.org 1 2025-09-23 2025-09-23 nxdomain
publish2.stage.penfed.org 1 2025-09-23 2025-09-23 nxdomain
blog.stage.penfed.org 1 2025-09-23 2025-09-23 nxdomain
espanol.stage.penfed.org 1 2025-09-23 2025-09-23 nxdomain
author.stage.penfed.org 1 2025-09-23 2025-09-23 nxdomain
services.stage.penfed.org 1 2025-09-23 2025-09-23 nxdomain
careers.stage.penfed.org 1 2025-09-23 2025-09-23 nxdomain
homestage.penfed.org 6 2026-01-16 2026-09-08 nxdomain
home.penfed.org 2 2026-01-02 2026-04-30 ok
mobilehome.penfed.org 1 2026-04-30 2026-04-30 nxdomain
mycreditscore.penfed.org 1 2026-02-05 2026-02-05 ok
www.mycreditscore.penfed.org 1 2026-02-05 2026-02-05 nxdomain
corporate.penfed.org 5 2026-03-05 2026-08-21 nxdomain
delete.penfed.org 1 2026-10-07 2026-10-07 nxdomain

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/penfed.org.

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/penfed.org.