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.

27 hosts · 218 ms

HostCertsFirst seenLast seen
1-msp.com 47 2026-01-06 2026-10-02
*.1-msp.com 26 2026-01-06 2026-10-02
halopsa.1-msp.com 2 2025-09-25 2026-08-26
hub.1-msp.com 10 2026-04-18 2026-09-12
dmarc.1-msp.com 1 2025-11-16 2025-11-16
*.dmarc.1-msp.com 1 2025-11-16 2025-11-16
secure.1-msp.com 3 2026-02-20 2026-10-05
marketing.1-msp.com 5 2026-05-17 2026-09-13
growth.1-msp.com 10 2026-06-17 2026-08-15
shadowai.1-msp.com 12 2026-06-13 2026-08-12
portal.1-msp.com 2 2026-01-12 2026-05-30
crm.1-msp.com 13 2026-06-04 2026-10-03
app.1-msp.com 2 2026-01-13 2026-06-02
cliq.1-msp.com 8 2026-04-19 2026-08-17
mta-sts.emailcr.1-msp.com 2 2026-02-26 2026-07-14
publisher.1-msp.com 10 2026-06-14 2026-08-12
glass.1-msp.com 10 2026-06-14 2026-08-17
notify.glass.1-msp.com 6 2026-06-16 2026-08-15
*.notify.glass.1-msp.com 6 2026-06-16 2026-08-15
url3951.reports.1-msp.com 2 2026-06-12 2026-06-12
mta-sts.1-msp.com 2 2026-02-27 2026-07-15
news.1-msp.com 3 2026-09-07 2026-09-07
pilot.1-msp.com 10 2026-06-14 2026-08-12
notify.pilot.1-msp.com 6 2026-06-16 2026-08-15
*.notify.pilot.1-msp.com 6 2026-06-16 2026-08-15
support.1-msp.com 2 2025-09-25 2026-08-26
www.1-msp.com 17 2026-05-20 2026-08-15

Programmatic access: API GET /v1/hosts/1-msp.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/1-msp.com.