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.

31 hosts · 303 ms

HostCertsFirst seenLast seen
onl-secee01.nssi.telus.com 1 2025-09-29 2025-09-29
abc-secee02.nssi.telus.com 1 2025-11-04 2025-11-04
abc-secee04.nssi.telus.com 1 2025-12-29 2025-12-29
onl-secee05.nssi.telus.com 1 2025-09-03 2025-09-03
onl-secee07.nssi.telus.com 1 2025-09-29 2025-09-29
bcv-secee07.nssi.telus.com 1 2025-09-29 2025-09-29
onl-secee08.nssi.telus.com 8 2025-09-29 2026-08-17
bcv-secee08.nssi.telus.com 6 2025-09-29 2026-08-17
c2s-vpn-ab-WS.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn-bc-WS.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn-qc-WS.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn-on-WS.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-oap3-ab.nssi.telus.com 1 2026-01-15 2026-01-15
c2s-vpn5-ab.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn6-ab.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn7-ab.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn8-ab.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-oap-ab.nssi.telus.com 1 2026-01-15 2026-01-15
c2s-vpn5-bc.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn6-bc.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn7-bc.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn8-bc.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn3-bc-preprod.nssi.telus.com 4 2026-01-28 2026-08-31
c2s-vpn4-bc-preprod.nssi.telus.com 4 2026-01-28 2026-08-31
c2s-vpn10-on.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn5-on.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn6-on.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn7-on.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn8-on.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn9-on.nssi.telus.com 1 2026-02-19 2026-02-19
c2s-vpn-bc-preprod-ws.nssi.telus.com 4 2026-01-28 2026-08-31

Programmatic access: API GET /v1/hosts/nssi.telus.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/nssi.telus.com.