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) · 589 ms

HostCertsFirst seenLast seenDNS
namecheap.com 2 2025-12-17 2025-12-18 ok
testmss1.namecheap.com 2 2026-09-09 2026-09-09 ok
mailtrackemailout1.namecheap.com 4 2025-07-24 2026-07-24 ok
*.mailtrackemailout1.namecheap.com 4 2025-07-24 2026-07-24 —
payments2.namecheap.com 12 2026-02-24 2026-09-15 ok
www.payments2.namecheap.com 1 2026-02-24 2026-02-24 nxdomain
raa.namecheap.com 14 2025-11-07 2026-09-17 ok
www.raa.namecheap.com 3 2025-11-07 2025-12-16 nxdomain
cl-mirror-fab.namecheap.com 1 2026-07-30 2026-07-30 ok
api.lb.namecheap.com 7 2026-05-17 2026-09-12 ok
aftermarketapi-sb.namecheap.com 3 2026-01-17 2026-09-10 ok
www.aftermarketapi-sb.namecheap.com 1 2026-01-17 2026-01-17 nxdomain
*.apps.sb-1.us-east-1.classic.namecheap.com 1 2026-05-20 2026-05-20 —
*.apps.prod-1.us-east-1.classic.namecheap.com 1 2026-05-22 2026-05-22 —
*.apps-external.sandbox-1.us-east-1.classic.namecheap.com 1 2026-05-20 2026-05-20 —
*.apps.sb-2.us-east-1.classic.namecheap.com 3 2026-09-17 2026-09-23 —
*.apps.prod-2.us-east-1.classic.namecheap.com 5 2026-09-17 2026-09-24 —
*.aftermarket-1.us-east-2.classic.namecheap.com 1 2026-09-02 2026-09-02 —
*.apps.aftermarket-1.us-east-2.classic.namecheap.com 1 2026-09-07 2026-09-07 —
*.ingress.classic.namecheap.com 1 2026-05-20 2026-05-20 —
download.namecheap.com 1 2026-02-03 2026-02-03 ok
evprod.namecheap.com 1 2026-09-29 2026-09-29 nxdomain
www.evprod.namecheap.com 1 2026-09-29 2026-09-29 nxdomain
ovprod.namecheap.com 1 2026-07-06 2026-07-06 nxdomain
www.ovprod.namecheap.com 1 2026-07-06 2026-07-06 nxdomain
googleworkspace.namecheap.com 7 2025-07-25 2026-08-29 ok
www.googleworkspace.namecheap.com 1 2025-07-25 2025-07-25 nxdomain
adfs.service.namecheap.com 1 2026-02-10 2026-02-10 ok
certauth.adfs.service.namecheap.com 1 2026-02-10 2026-02-10 nxdomain
parkingpage.namecheap.com 1 2025-09-01 2025-09-01 ok
accessible.namecheap.com 6 2026-05-28 2026-09-03 ok
mobile.namecheap.com 16 2026-05-18 2026-09-24 ok
www.mobile.namecheap.com 1 2026-05-18 2026-05-18 nodata
aftermarket-console.namecheap.com 1 2026-01-31 2026-01-31 ok
www.aftermarket-console.namecheap.com 1 2026-01-31 2026-01-31 nxdomain
www.uptime.namecheap.com 9 2026-05-21 2026-09-25 ok
secure.namecheap.com 1 2026-02-04 2026-02-04 ok
www.secure.namecheap.com 1 2026-02-04 2026-02-04 nxdomain
affiliate.namecheap.com 2 2026-01-19 2026-01-19 ok
www.affiliate.namecheap.com 2 2026-01-19 2026-01-19 nxdomain
admin.gsuite.namecheap.com 8 2026-06-25 2026-09-08 ok
img.namecheap.com 3 2025-12-22 2026-03-27 nodata
*.img.namecheap.com 1 2026-03-27 2026-03-27 —
a.img.namecheap.com 2 2025-06-10 2025-06-26 nxdomain
i.img.namecheap.com 2 2025-06-18 2025-06-26 nxdomain
api.img.namecheap.com 1 2025-12-28 2025-12-28 nxdomain
api.hosting.namecheap.com 1 2025-11-07 2025-11-07 ok
www.api.hosting.namecheap.com 1 2025-11-07 2025-11-07 nxdomain
mktg.namecheap.com 12 2026-04-15 2026-08-11 ok
merch.namecheap.com 2 2026-01-19 2026-01-19 ok
www.merch.namecheap.com 2 2026-01-19 2026-01-19 nxdomain
auth.namecheap.com 2 2025-09-29 2026-08-29 ok
bi.namecheap.com 8 2025-06-23 2026-09-16 ok
www.bi.namecheap.com 2 2025-06-23 2026-06-30 nxdomain
api.namecheap.com 11 2026-05-05 2026-08-31 ok
m.api.namecheap.com 2 2025-07-11 2026-07-08 ok
www.m.api.namecheap.com 2 2025-07-11 2026-07-08 nxdomain
www.api.namecheap.com 1 2026-05-11 2026-05-11 nxdomain
aftermarketapi.namecheap.com 7 2025-10-08 2026-09-15 ok
www.aftermarketapi.namecheap.com 5 2025-10-08 2026-09-14 nxdomain
mailtrack.namecheap.com 2 2026-02-13 2026-02-17 ok
www.mailtrack.namecheap.com 2 2026-02-13 2026-02-17 nxdomain
www.legal.namecheap.com 6 2026-07-03 2026-08-31 ok
qatool.namecheap.com 1 2026-02-11 2026-02-11 ok
www.qatool.namecheap.com 1 2026-02-11 2026-02-11 nxdomain
apisix.cdn.namecheap.com 1 2026-02-09 2026-02-09 ok
qatoolc3po.namecheap.com 1 2025-10-20 2025-10-20 ok
www.qatoolc3po.namecheap.com 1 2025-10-20 2025-10-20 nxdomain
rdap.namecheap.com 19 2026-01-26 2026-08-25 ok
mcp.namecheap.com 4 2026-07-06 2026-09-03 ok
connector-mcp.namecheap.com 2 2026-09-22 2026-09-22 ok
cl-mirror-sgp.namecheap.com 1 2026-07-30 2026-07-30 ok
conocer.namecheap.com 2 2026-04-30 2026-04-30 ok
www.conocer.namecheap.com 2 2026-04-30 2026-04-30 ok
onepager.namecheap.com 3 2025-09-22 2026-10-02 ok
www.onepager.namecheap.com 3 2025-09-22 2026-10-02 nxdomain
cl-mirror.namecheap.com 5 2025-11-13 2026-08-28 ok
www.cl-mirror.namecheap.com 1 2025-11-13 2025-11-13 nxdomain
files.namecheap.com 14 2025-11-26 2026-09-17 ok
01.files.namecheap.com 21 2025-11-26 2026-09-02 ok
02.files.namecheap.com 23 2025-11-26 2026-09-21 ok
links.namecheap.com 9 2026-05-20 2026-09-15 ok
nps.namecheap.com 1 2026-03-16 2026-03-16 ok
www.nps.namecheap.com 1 2026-03-16 2026-03-16 nxdomain
apps.namecheap.com 4 2025-06-12 2026-10-03 nodata
*.apps.namecheap.com 4 2025-06-12 2026-10-03 —
partners.apps.namecheap.com 21 2026-04-13 2026-09-05 ok
support.namecheap.com 12 2025-11-21 2026-08-08 ok
npsapi.support.namecheap.com 1 2026-01-06 2026-01-06 ok
www.npsapi.support.namecheap.com 1 2026-01-06 2026-01-06 nxdomain
www.support.namecheap.com 2 2025-11-21 2025-11-21 nxdomain
www.namecheap.com 12 2025-12-17 2026-09-08 ok
service.www.namecheap.com 21 2026-03-02 2026-09-29 ok
www.service.www.namecheap.com 1 2026-03-02 2026-03-02 nxdomain
manage.www.namecheap.com 20 2026-04-12 2026-09-01 ok
ghostmachine.www.namecheap.com 7 2026-03-20 2026-08-31 ok
www.ghostmachine.www.namecheap.com 1 2026-03-20 2026-03-20 nxdomain
sf.www.namecheap.com 1 2025-12-12 2025-12-12 ok
www.sf.www.namecheap.com 1 2025-12-12 2025-12-12 nxdomain
search.www.namecheap.com 17 2026-04-12 2026-09-15 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/namecheap.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/namecheap.com.