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.

56 hosts · 376 ms

HostCertsFirst seenLast seenDNS
intercom.com 9 2025-11-02 2026-09-14 ok
*.intercom.com 20 2025-06-19 2026-09-14 —
send.intercom.com 10 2026-07-28 2026-09-27 nodata
*.send.intercom.com 10 2026-07-28 2026-09-27 —
surge.intercom.com 3 2026-05-15 2026-06-19 ok
watch.intercom.com 10 2026-04-23 2026-08-20 ok
mi.intercom.com 1 2026-01-05 2026-01-05 ok
services.api.intercom.com 2 2025-08-05 2026-07-06 ok
vercel.intercom.com 5 2026-05-06 2026-09-09 ok
em.intercom.com 6 2026-05-07 2026-09-02 ok
go.intercom.com 8 2026-05-07 2026-09-02 ok
mcp.intercom.com 62 2026-04-13 2026-09-25 ok
*.mcp.intercom.com 12 2026-04-19 2026-09-25 —
google-workspace.mcp.intercom.com 10 2026-05-28 2026-09-23 ok
*.google-workspace.mcp.intercom.com 10 2026-05-28 2026-09-23 —
staging.google-workspace.mcp.intercom.com 10 2026-04-13 2026-08-09 ok
*.staging.google-workspace.mcp.intercom.com 10 2026-04-13 2026-08-09 —
greenhouse.mcp.intercom.com 4 2026-06-07 2026-06-07 nxdomain
*.greenhouse.mcp.intercom.com 4 2026-06-07 2026-06-07 —
staging.mcp.intercom.com 8 2026-05-30 2026-09-25 ok
api.mcp.intercom.com 10 2026-04-19 2026-08-15 ok
gmail.mcp.intercom.com 2 2026-09-25 2026-09-25 ok
*.gmail.mcp.intercom.com 2 2026-09-25 2026-09-25 —
legal.corp.intercom.com 2 2026-04-07 2026-09-07 ok
help.legal.corp.intercom.com 10 2026-04-27 2026-08-24 ok
hackathon.corp.intercom.com 3 2025-06-27 2025-11-19 ok
logs.corp.intercom.com 1 2026-02-15 2026-02-15 ok
vsaq.intercom.com 1 2026-02-15 2026-02-15 ok
hq.intercom.com 1 2026-01-26 2026-01-26 ok
link.hq.intercom.com 4 2026-04-20 2026-08-12 ok
rsvp.pioneer.intercom.com 5 2026-05-15 2026-09-11 ok
*.mobile-messenger.intercom.com 3 2026-03-15 2026-08-15 —
composer.intercom.com 4 2026-04-10 2026-06-19 ok
services.intercom.com 2 2025-08-05 2026-07-06 ok
sales.intercom.com 2 2025-06-20 2026-05-20 ok
credentials.intercom.com 10 2026-05-14 2026-09-10 ok
developers.intercom.com 8 2026-05-10 2026-09-08 ok
events.intercom.com 9 2026-05-24 2026-06-18 ok
attend.events.intercom.com 18 2026-05-25 2026-09-21 ok
register.events.intercom.com 18 2026-05-26 2026-09-22 ok
academy.guests.intercom.com 2 2026-04-19 2026-09-19 ok
trust.intercom.com 6 2026-04-22 2026-08-18 ok
out.intercom.com 5 2026-05-09 2026-09-05 ok
au.intercom.com 6 2025-06-19 2026-05-20 nodata
*.au.intercom.com 5 2025-06-19 2026-05-20 —
logs.corp.au.intercom.com 2 2025-06-29 2026-05-30 ok
eu.intercom.com 5 2025-06-20 2026-05-21 nodata
*.eu.intercom.com 5 2025-06-20 2026-05-21 —
mcp.eu.intercom.com 29 2026-05-29 2026-09-27 ok
*.mcp.eu.intercom.com 29 2026-05-29 2026-09-27 —
logs.corp.eu.intercom.com 2 2025-06-29 2026-05-30 ok
privacy.intercom.com 2 2025-06-18 2026-05-18 ok
academy.intercom.com 1 2026-03-13 2026-03-13 ok
partneracademy.intercom.com 1 2026-05-09 2026-05-09 ok
directory.intercom.com 8 2026-05-14 2026-09-09 ok
community.intercom.com 1 2025-12-24 2025-12-24 ok

Programmatic access, with DNS A records: API GET /v1/hosts/intercom.com (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/intercom.com.