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.

97 hosts · 256 ms

HostCertsFirst seenLast seen
resurgent.com 7 2025-09-09 2026-09-20
portal001.resurgent.com 3 2026-05-21 2026-10-03
ivr001.resurgent.com 3 2026-05-24 2026-10-05
portaltest001.resurgent.com 3 2026-05-19 2026-10-02
rpay001.resurgent.com 3 2026-05-14 2026-09-27
cinazrsbc01.resurgent.com 1 2026-04-20 2026-04-20
guestportal1.resurgent.com 5 2025-09-17 2026-09-02
clientvpn1.resurgent.com 1 2026-04-12 2026-04-12
clientvpntest1.resurgent.com 1 2026-04-10 2026-04-10
handshake002.resurgent.com 2 2026-01-17 2026-06-11
portal002.resurgent.com 2 2026-05-21 2026-10-03
ivr002.resurgent.com 2 2026-01-17 2026-06-09
rpay002.resurgent.com 3 2026-05-14 2026-09-28
ra2.resurgent.com 11 2026-06-01 2026-09-02
pki2.resurgent.com 2 2026-01-21 2026-06-12
guestportal2.resurgent.com 5 2025-09-17 2026-09-02
links.mail.confirm2.resurgent.com 3 2026-06-29 2026-08-29
clientvpn2.resurgent.com 1 2026-04-12 2026-04-12
links.mail.ecollect2.resurgent.com 5 2026-05-22 2026-09-19
clientvpntest2.resurgent.com 1 2026-04-10 2026-04-10
ra3.resurgent.com 11 2026-06-01 2026-09-02
guestportal3.resurgent.com 5 2025-09-17 2026-09-02
clientvpn3.resurgent.com 1 2026-04-12 2026-04-12
guestportal4.resurgent.com 5 2025-09-17 2026-09-02
clientvpn4.resurgent.com 1 2026-04-12 2026-04-12
guestportal5.resurgent.com 5 2025-09-17 2026-09-02
cinshradc07.resurgent.com 7 2026-06-01 2026-10-03
cinshradc08.resurgent.com 7 2026-06-01 2026-10-03
ra.resurgent.com 11 2026-06-01 2026-09-02
ssa.resurgent.com 2 2026-06-04 2026-06-11
www.ssa.resurgent.com 1 2026-06-04 2026-06-04
teamtab.resurgent.com 2 2026-02-18 2026-07-10
sbc.resurgent.com 1 2026-04-20 2026-04-20
bridge.resurgent.com 3 2026-05-18 2026-09-30
handshake.resurgent.com 4 2026-02-18 2026-10-05
api.resurgent.com 8 2026-06-04 2026-10-06
topspaytest-api.resurgent.com 2 2026-01-20 2026-06-12
topspaydev-api.resurgent.com 2 2026-01-30 2026-06-15
topspay-api.resurgent.com 2 2026-03-02 2026-07-13
camapi.resurgent.com 3 2026-05-18 2026-09-30
camhook.resurgent.com 3 2026-05-18 2026-09-30
portal.resurgent.com 3 2026-05-18 2026-10-01
apiportal.resurgent.com 7 2026-06-04 2026-10-06
apidevportal.resurgent.com 6 2026-06-30 2026-10-01
mail.resurgent.com 3 2025-09-09 2026-09-20
www.mail.resurgent.com 3 2025-09-09 2026-09-20
cam.resurgent.com 2 2026-01-14 2026-06-10
wim.resurgent.com 2 2026-01-13 2026-06-10
cdn.resurgent.com 3 2026-05-14 2026-09-27
login.resurgent.com 3 2026-05-14 2026-09-27
securevpn.resurgent.com 1 2026-04-12 2026-04-12
clientvpn.resurgent.com 1 2026-04-12 2026-04-12
www.clientvpn.resurgent.com 1 2026-04-12 2026-04-12
rcs-dr.resurgent.com 2 2026-02-23 2026-06-17
autodiscover.resurgent.com 3 2025-09-09 2026-09-20
guest-sponsor.resurgent.com 5 2025-09-17 2026-09-02
www.guest-sponsor.resurgent.com 5 2025-09-17 2026-09-02
ivr.resurgent.com 3 2026-05-18 2026-09-30
payment.resurgent.com 2 2026-03-01 2026-07-10
sbceast.resurgent.com 1 2026-04-20 2026-04-20
bridgetest.resurgent.com 3 2026-05-15 2026-09-29
handshaketest.resurgent.com 3 2026-02-18 2026-10-03
apitest.resurgent.com 3 2025-11-11 2025-11-18
www.apitest.resurgent.com 3 2025-11-11 2025-11-18
camhooktest.resurgent.com 2 2026-05-16 2026-10-01
portaltest.resurgent.com 4 2026-05-18 2026-10-01
camtest.resurgent.com 2 2026-01-14 2026-06-10
wimtest.resurgent.com 2 2026-01-14 2026-06-10
cdntest.resurgent.com 3 2026-05-14 2026-09-27
logintest.resurgent.com 3 2026-05-18 2026-09-30
securevpntest.resurgent.com 1 2026-04-10 2026-04-10
clientvpntest.resurgent.com 2 2026-04-10 2026-04-12
ivrtest.resurgent.com 3 2026-05-18 2026-09-30
paymenttest.resurgent.com 2 2026-01-26 2026-06-12
tmsworkflowtest.resurgent.com 2 2026-01-13 2026-05-31
wwwtest.resurgent.com 4 2026-05-18 2026-10-01
topspaytest.resurgent.com 2 2026-01-20 2026-06-12
sbcwest.resurgent.com 1 2026-04-20 2026-04-20
bridgedev.resurgent.com 10 2026-05-15 2026-10-07
handshakedev.resurgent.com 4 2026-02-21 2026-10-06
apidev.resurgent.com 2 2026-01-26 2026-07-15
portaldev.resurgent.com 11 2026-05-18 2026-10-07
camdev.resurgent.com 2 2026-01-13 2026-06-10
wimdev.resurgent.com 2 2026-01-20 2026-06-13
cdndev.resurgent.com 3 2026-05-14 2026-09-27
logindev.resurgent.com 9 2026-05-17 2026-10-07
ivrdev.resurgent.com 11 2026-05-17 2026-10-07
paymentdev.resurgent.com 2 2026-01-30 2026-06-15
tmsworkflowdev.resurgent.com 2 2026-01-13 2026-06-11
wwwdev.resurgent.com 10 2026-05-15 2026-10-07
topspaydev.resurgent.com 2 2026-01-31 2026-06-16
freshview.resurgent.com 3 2026-05-14 2026-09-28
tmsworkflow.resurgent.com 2 2026-01-13 2026-06-11
www.resurgent.com 3 2026-05-16 2026-09-29
clientcertfix.resurgent.com 2 2026-04-10 2026-04-12
rpay.resurgent.com 3 2026-05-14 2026-09-27
topspay.resurgent.com 2 2026-03-01 2026-07-10

Programmatic access: API GET /v1/hosts/resurgent.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/resurgent.com.