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) · 439 ms

HostCertsFirst seenLast seenDNS
nextdoor.com 15 2025-10-17 2026-10-01 ok
*.nextdoor.com 15 2025-10-17 2026-10-01 —
*.au1-a.nextdoor.com 2 2025-10-17 2026-10-01 —
targeting-server.au1-a.nextdoor.com 1 2026-01-26 2026-01-26 nxdomain
targeting-server-tw.au1-a.nextdoor.com 1 2026-01-26 2026-01-26 nxdomain
*.us2-a.nextdoor.com 2 2025-10-18 2026-09-18 —
targeting-server.us2-a.nextdoor.com 1 2026-01-26 2026-01-26 nxdomain
targeting-server-tw.us2-a.nextdoor.com 1 2026-01-26 2026-01-26 nxdomain
ca.nextdoor.com 2 2026-03-23 2026-09-06 ok
*.ca.nextdoor.com 4 2025-10-18 2026-09-18 —
blog-en.ca.nextdoor.com 8 2026-05-07 2026-09-02 ok
blog-fr.ca.nextdoor.com 6 2026-05-06 2026-09-01 ok
neighbor.ca.nextdoor.com 8 2026-05-08 2026-09-03 ok
*.us1-b.nextdoor.com 2 2025-10-17 2026-10-01 —
targeting-server.us1-b.nextdoor.com 1 2026-01-26 2026-01-26 nxdomain
targeting-server-tw.us1-b.nextdoor.com 1 2026-01-26 2026-01-26 nxdomain
*.eu1-d.nextdoor.com 2 2025-10-18 2026-09-18 —
targeting-server.eu1-d.nextdoor.com 1 2026-01-26 2026-01-26 nxdomain
targeting-server-tw.eu1-d.nextdoor.com 1 2026-01-26 2026-01-26 nxdomain
us1-trgt-svr.service.nextdoor.com 1 2026-01-26 2026-01-26 ok
au1-trgt-svr.service.nextdoor.com 1 2026-01-26 2026-01-26 ok
eu1-trgt-svr.service.nextdoor.com 1 2026-01-26 2026-01-26 ok
us2-trgt-svr.service.nextdoor.com 1 2026-01-26 2026-01-26 ok
us1-trgt-svr-tw.service.nextdoor.com 1 2026-01-26 2026-01-26 ok
au1-trgt-svr-tw.service.nextdoor.com 1 2026-01-26 2026-01-26 ok
eu1-trgt-svr-tw.service.nextdoor.com 1 2026-01-26 2026-01-26 ok
us2-trgt-svr-tw.service.nextdoor.com 1 2026-01-26 2026-01-26 ok
*.de.nextdoor.com 4 2025-10-18 2026-09-18 —
measure.nextdoor.com 3 2026-04-30 2026-08-20 ok
www.measure.nextdoor.com 5 2026-04-22 2026-10-04 ok
*.se.nextdoor.com 4 2025-10-18 2026-09-18 —
realestate.nextdoor.com 10 2026-04-22 2026-08-19 ok
prefs.realestate.nextdoor.com 12 2026-04-22 2026-08-19 ok
test-cloud12-dualwrite.nextdoor.com 1 2026-07-08 2026-07-08 nodata
blog.nextdoor.com 8 2026-05-06 2026-09-02 ok
seblog.nextdoor.com 9 2026-05-06 2026-09-01 ok
engblog.nextdoor.com 9 2025-07-09 2026-08-15 ok
dkblog.nextdoor.com 6 2026-04-30 2026-08-27 ok
frblog.nextdoor.com 8 2026-05-07 2026-09-02 ok
esblog.nextdoor.com 8 2026-05-06 2026-09-02 ok
itblog.nextdoor.com 10 2026-05-06 2026-09-01 ok
aublog.nextdoor.com 6 2026-05-07 2026-09-02 ok
auth.nextdoor.com 2 2026-03-09 2026-08-23 ok
mi.nextdoor.com 3 2026-07-09 2026-09-17 ok
au-api.nextdoor.com 1 2026-01-26 2026-01-26 ok
*.dk.nextdoor.com 4 2025-10-18 2026-09-18 —
ho-trk.nextdoor.com 3 2026-02-13 2026-02-15 ok
*.uk.nextdoor.com 4 2025-10-18 2026-09-18 —
legal.nextdoor.com 3 2026-02-25 2026-07-28 ok
*.msnam2.email.nextdoor.com 2 2026-01-26 2026-06-26 —
validator-test-2026-06-25.email.nextdoor.com 1 2026-06-25 2026-06-25 nxdomain
links.itr.email.nextdoor.com 2 2026-01-26 2026-06-26 ok
link.ms.email.nextdoor.com 2 2026-01-26 2026-06-26 ok
*.link-ext.ms.email.nextdoor.com 2 2026-01-26 2026-06-26 —
*.nl.nextdoor.com 4 2025-10-18 2026-09-18 —
agencyforum.nextdoor.com 3 2026-01-25 2026-08-11 ok
region.nextdoor.com 2 2026-03-09 2026-08-23 ok
go.nextdoor.com 3 2026-02-25 2026-07-28 ok
*.no.nextdoor.com 4 2025-10-18 2026-09-18 —
us1-photo.nextdoor.com 1 2026-01-26 2026-01-26 ok
au1-photo.nextdoor.com 1 2026-01-26 2026-01-26 ok
eu1-photo.nextdoor.com 1 2026-01-26 2026-01-26 ok
us2-photo.nextdoor.com 1 2026-01-26 2026-01-26 ok
help.nextdoor.com 1 2026-05-01 2026-05-01 ok
businesshelp.nextdoor.com 4 2026-01-26 2026-08-11 nodata
corp.nextdoor.com 6 2025-08-11 2026-07-26 nodata
*.corp.nextdoor.com 8 2025-10-29 2026-01-24 —
argocd.corp.nextdoor.com 2 2025-06-26 2026-06-11 ok
argocd-stg.corp.nextdoor.com 2 2025-06-26 2026-06-11 ok
coder-work.corp.nextdoor.com 1 2025-08-11 2025-08-11 nxdomain
*.coder-work.corp.nextdoor.com 1 2025-08-11 2025-08-11 —
coder-west.corp.nextdoor.com 2 2025-08-11 2026-07-26 ok
*.coder-west.corp.nextdoor.com 2 2025-08-11 2026-07-26 —
coder-dev.corp.nextdoor.com 3 2025-08-11 2026-07-26 ok
*.coder-dev.corp.nextdoor.com 3 2025-08-11 2026-07-26 —
developer.nextdoor.com 6 2026-04-17 2026-08-13 ok
letter.nextdoor.com 1 2026-10-01 2026-10-01 ok
*.letter.nextdoor.com 1 2026-10-01 2026-10-01 —
*.fr.nextdoor.com 4 2025-10-18 2026-09-18 —
neighbor.nextdoor.com 10 2026-04-20 2026-08-16 ok
metrics.nextdoor.com 2 2026-02-22 2026-07-10 ok
analytics.nextdoor.com 8 2025-09-14 2026-08-29 nodata
*.analytics.nextdoor.com 8 2025-09-14 2026-08-29 —
*.analytics1.analytics.nextdoor.com 8 2025-09-14 2026-08-29 —
eks-private.analytics1.analytics.nextdoor.com 1 2026-01-23 2026-01-23 ok
staging-eks-private.analytics1.analytics.nextdoor.com 1 2026-01-22 2026-01-22 ok
analytics1-eks.analytics.nextdoor.com 1 2025-11-10 2025-11-10 nodata
staging-analytics1-eks.analytics.nextdoor.com 1 2025-11-10 2025-11-10 nodata
*.staging-analytics1-eks.analytics.nextdoor.com 1 2025-11-10 2025-11-10 —
*.analytics1-eks.analytics.nextdoor.com 1 2025-11-10 2025-11-10 —
ads.nextdoor.com 2 2025-09-04 2026-08-05 ok
*.es.nextdoor.com 4 2025-10-18 2026-09-18 —
us1-eks.nextdoor.com 1 2025-11-10 2025-11-10 nodata
*.us1-eks.nextdoor.com 1 2025-11-10 2025-11-10 —
au1-eks.nextdoor.com 1 2025-11-10 2025-11-10 nodata
*.au1-eks.nextdoor.com 1 2025-11-10 2025-11-10 —
eu1-eks.nextdoor.com 1 2025-11-10 2025-11-10 nodata
*.eu1-eks.nextdoor.com 1 2025-11-10 2025-11-10 —
us2-eks.nextdoor.com 1 2025-11-10 2025-11-10 nodata
*.us2-eks.nextdoor.com 1 2025-11-10 2025-11-10 —

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/nextdoor.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/nextdoor.com.