Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

56 hosts · 251 ms

HostCertsFirst seenLast seen
nelnet.studentaid.gov 11 2025-09-15 2026-09-23
origin1.nelnet.studentaid.gov 2 2026-02-25 2026-08-25
origin2.nelnet.studentaid.gov 2 2026-02-25 2026-08-25
filenetp8.nelnet.studentaid.gov 11 2025-09-15 2026-09-23
origin1-filenetp8.nelnet.studentaid.gov 2 2026-02-25 2026-08-25
origin2-filenetp8.nelnet.studentaid.gov 2 2026-02-25 2026-08-25
ema.nelnet.studentaid.gov 11 2025-09-15 2026-09-23
origin1-ema.nelnet.studentaid.gov 2 2026-02-25 2026-08-25
origin2-ema.nelnet.studentaid.gov 2 2026-02-25 2026-08-25
qaextmma.nelnet.studentaid.gov 10 2025-09-15 2026-09-23
origin1-qaextmma.nelnet.studentaid.gov 1 2026-04-21 2026-04-21
origin2-qaextmma.nelnet.studentaid.gov 1 2026-04-21 2026-04-21
strextmma.nelnet.studentaid.gov 9 2025-09-15 2026-09-23
devextmma.nelnet.studentaid.gov 10 2025-09-15 2026-09-23
origin1-devextmma.nelnet.studentaid.gov 1 2026-04-21 2026-04-21
origin2-devextmma.nelnet.studentaid.gov 1 2026-04-21 2026-04-21
datatradeqa.nelnet.studentaid.gov 10 2025-09-15 2026-09-23
origin1-datatradeqa.nelnet.studentaid.gov 1 2026-02-25 2026-02-25
origin2-datatradeqa.nelnet.studentaid.gov 1 2026-02-25 2026-02-25
data.nelnet.studentaid.gov 3 2026-05-15 2026-08-30
nsighthub.nelnet.studentaid.gov 11 2025-09-15 2026-09-23
origin1-nsighthub.nelnet.studentaid.gov 2 2026-02-25 2026-08-25
origin2-nsighthub.nelnet.studentaid.gov 2 2026-02-25 2026-08-25
*.e.nelnet.studentaid.gov 1 2026-01-02 2026-01-02
datatrade.nelnet.studentaid.gov 10 2025-09-15 2026-09-23
origin1-datatrade.nelnet.studentaid.gov 1 2026-02-25 2026-02-25
origin2-datatrade.nelnet.studentaid.gov 1 2026-02-25 2026-02-25
auth.nelnet.studentaid.gov 11 2025-09-15 2026-09-23
origin1-auth.nelnet.studentaid.gov 2 2026-02-25 2026-08-25
origin2-auth.nelnet.studentaid.gov 2 2026-02-25 2026-08-25
qaextauth.nelnet.studentaid.gov 10 2025-09-15 2026-09-23
origin1-qaextauth.nelnet.studentaid.gov 1 2026-04-21 2026-04-21
origin2-qaextauth.nelnet.studentaid.gov 1 2026-04-21 2026-04-21
strextauth.nelnet.studentaid.gov 9 2025-09-15 2026-09-23
devextauth.nelnet.studentaid.gov 10 2025-09-15 2026-09-23
origin1-devextauth.nelnet.studentaid.gov 1 2026-04-21 2026-04-21
origin2-devextauth.nelnet.studentaid.gov 1 2026-04-21 2026-04-21
mmaapi.nelnet.studentaid.gov 11 2025-09-15 2026-09-23
origin1-mmaapi.nelnet.studentaid.gov 2 2026-02-25 2026-08-25
origin2-mmaapi.nelnet.studentaid.gov 2 2026-02-25 2026-08-25
qaextmmaapi.nelnet.studentaid.gov 10 2025-09-15 2026-09-23
origin1-qaextmmaapi.nelnet.studentaid.gov 1 2026-04-21 2026-04-21
origin2-qaextmmaapi.nelnet.studentaid.gov 1 2026-04-21 2026-04-21
strextmmaapi.nelnet.studentaid.gov 9 2025-09-15 2026-09-23
devextmmaapi.nelnet.studentaid.gov 10 2025-09-15 2026-09-23
origin1-devextmmaapi.nelnet.studentaid.gov 1 2026-04-21 2026-04-21
origin2-devextmmaapi.nelnet.studentaid.gov 1 2026-04-21 2026-04-21
nsightbobj.nelnet.studentaid.gov 8 2026-01-20 2026-09-23
nsightqaawsop.nelnet.studentaid.gov 9 2025-09-15 2026-09-23
nsightqaaws.nelnet.studentaid.gov 11 2025-09-15 2026-09-23
origin1-nsightqaaws.nelnet.studentaid.gov 2 2026-02-25 2026-08-25
origin2-nsightqaaws.nelnet.studentaid.gov 2 2026-02-25 2026-08-25
mft.nelnet.studentaid.gov 10 2025-09-15 2026-09-23
origin1-mft.nelnet.studentaid.gov 1 2026-04-21 2026-04-21
origin2-mft.nelnet.studentaid.gov 1 2026-04-21 2026-04-21
content.nelnet.studentaid.gov 7 2026-03-02 2026-10-01

Programmatic access: API GET /v1/hosts/nelnet.studentaid.gov (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/nelnet.studentaid.gov.