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) · 373 ms

HostCertsFirst seenLast seenDNS
q-ctrl.com 34 2026-05-03 2026-09-17 ok
*.q-ctrl.com 35 2026-05-03 2026-10-06 —
dev.id.q-ctrl.com 4 2026-04-13 2026-08-11 nodata
brand.q-ctrl.com 3 2026-03-02 2026-08-02 ok
*.snd.q-ctrl.com 5 2026-06-01 2026-08-28 —
*.private.snd.q-ctrl.com 3 2026-06-29 2026-08-28 —
*.api.snd.q-ctrl.com 5 2026-06-01 2026-08-28 —
*.scaleup.api.snd.q-ctrl.com 5 2026-06-01 2026-08-28 —
*.tools.snd.q-ctrl.com 5 2026-06-01 2026-08-28 —
*.telemetry.snd.q-ctrl.com 5 2026-06-01 2026-08-28 —
dev.profile-service.q-ctrl.com 4 2026-04-13 2026-08-11 nodata
dev.license-service.q-ctrl.com 4 2026-04-13 2026-08-11 nxdomain
dev.billing-service.q-ctrl.com 4 2026-04-13 2026-08-11 nodata
dev.federation-service.q-ctrl.com 4 2026-04-13 2026-08-11 nodata
dev.integration-service.q-ctrl.com 4 2026-04-13 2026-08-11 nodata
secret-service.q-ctrl.com 5 2026-05-11 2026-09-08 ok
dev.content-service.q-ctrl.com 4 2026-04-13 2026-08-11 nodata
code.q-ctrl.com 4 2026-04-14 2026-08-12 ok
myrtle.q-ctrl.com 1 2025-12-23 2025-12-23 ok
www.myrtle.q-ctrl.com 1 2025-12-23 2025-12-23 nxdomain
fire.q-ctrl.com 5 2026-04-27 2026-08-27 ok
inc-100.fire.q-ctrl.com 1 2026-08-26 2026-08-26 ok
blck-9650.fire.q-ctrl.com 1 2026-08-27 2026-08-27 ok
scup-6070.fire.q-ctrl.com 1 2026-08-11 2026-08-11 ok
scup-6180.fire.q-ctrl.com 1 2026-08-21 2026-08-21 ok
pa-5090.fire.q-ctrl.com 5 2026-05-22 2026-09-26 ok
pa-6421.fire.q-ctrl.com 1 2026-09-09 2026-09-09 ok
pa-6341.fire.q-ctrl.com 1 2026-08-26 2026-08-26 ok
scup-5661.fire.q-ctrl.com 3 2026-07-10 2026-09-11 ok
oplp-6071.fire.q-ctrl.com 2 2026-10-02 2026-10-02 ok
scup-6071.fire.q-ctrl.com 1 2026-08-10 2026-08-10 ok
pa-5512.fire.q-ctrl.com 4 2026-04-13 2026-08-16 ok
scup-6232.fire.q-ctrl.com 1 2026-09-04 2026-09-04 ok
scup-45342.fire.q-ctrl.com 4 2026-04-19 2026-08-21 ok
scup-5942.fire.q-ctrl.com 1 2026-08-10 2026-08-10 ok
blck-9652.fire.q-ctrl.com 1 2026-09-08 2026-09-08 ok
blck-9362.fire.q-ctrl.com 5 2026-05-09 2026-09-09 ok
blck-8962.fire.q-ctrl.com 1 2026-09-20 2026-09-20 ok
scup-6072.fire.q-ctrl.com 1 2026-08-13 2026-08-13 ok
scup-34882.fire.q-ctrl.com 4 2026-04-11 2026-08-14 ok
fire-3392.fire.q-ctrl.com 4 2026-04-16 2026-08-19 ok
pa-3003.fire.q-ctrl.com 6 2026-05-16 2026-09-16 ok
blck-9403.fire.q-ctrl.com 1 2026-09-23 2026-09-23 ok
scup-3613.fire.q-ctrl.com 5 2026-05-03 2026-09-04 ok
blck-9323.fire.q-ctrl.com 4 2026-04-21 2026-08-23 ok
pa-5623.fire.q-ctrl.com 4 2026-04-21 2026-08-22 ok
blck-9333.fire.q-ctrl.com 5 2026-05-02 2026-09-04 ok
blck-9343.fire.q-ctrl.com 4 2026-06-04 2026-10-04 ok
fix-202502061553.fire.q-ctrl.com 3 2026-06-13 2026-08-16 ok
scup-9753.fire.q-ctrl.com 3 2026-07-08 2026-09-08 ok
scup-6073.fire.q-ctrl.com 1 2026-08-18 2026-08-18 ok
scup-4483.fire.q-ctrl.com 3 2026-06-11 2026-08-10 ok
blck-9483.fire.q-ctrl.com 4 2026-04-13 2026-08-16 ok
scup-34883.fire.q-ctrl.com 4 2026-04-16 2026-08-18 ok
blck-9693.fire.q-ctrl.com 3 2026-09-30 2026-09-30 ok
scup-4004.fire.q-ctrl.com 5 2026-05-06 2026-09-08 ok
pa-6304.fire.q-ctrl.com 1 2026-09-22 2026-09-22 ok
fix-202607081414.fire.q-ctrl.com 3 2026-07-08 2026-09-08 ok
pa-5444.fire.q-ctrl.com 1 2026-08-24 2026-08-24 ok
scup-987654.fire.q-ctrl.com 5 2026-05-02 2026-09-05 ok
oplp-5994.fire.q-ctrl.com 1 2026-09-28 2026-09-28 ok
blck-9305.fire.q-ctrl.com 4 2026-04-10 2026-08-12 ok
fire-4605.fire.q-ctrl.com 1 2026-08-05 2026-08-05 ok
blck-9415.fire.q-ctrl.com 3 2026-07-06 2026-09-06 ok
scup-01825.fire.q-ctrl.com 5 2026-05-06 2026-09-08 ok
pa-6335.fire.q-ctrl.com 1 2026-08-26 2026-08-26 ok
fix-20250303145.fire.q-ctrl.com 5 2026-05-03 2026-09-06 ok
scup-9245.fire.q-ctrl.com 1 2026-09-03 2026-09-03 ok
scup-9345.fire.q-ctrl.com 1 2026-08-07 2026-08-07 ok
scup-8745.fire.q-ctrl.com 3 2026-07-08 2026-09-09 ok
pa-5655.fire.q-ctrl.com 3 2026-06-24 2026-08-25 ok
infra-4065.fire.q-ctrl.com 1 2026-09-10 2026-09-10 ok
scup-9875.fire.q-ctrl.com 3 2026-06-26 2026-08-28 ok
pa-6385.fire.q-ctrl.com 1 2026-09-06 2026-09-06 ok
scup-3485.fire.q-ctrl.com 3 2026-06-12 2026-08-12 ok
blck-9685.fire.q-ctrl.com 1 2026-09-22 2026-09-22 ok
pa-5785.fire.q-ctrl.com 5 2026-05-13 2026-09-13 ok
infra-3416.fire.q-ctrl.com 5 2026-05-15 2026-09-16 ok
pa-6336.fire.q-ctrl.com 1 2026-08-26 2026-08-26 ok
pa-6346.fire.q-ctrl.com 1 2026-08-27 2026-08-27 ok
scup-5886.fire.q-ctrl.com 3 2026-07-26 2026-09-29 ok
scup-6207.fire.q-ctrl.com 2 2026-08-26 2026-08-26 ok
oplp-2907.fire.q-ctrl.com 1 2026-09-10 2026-09-10 ok
fix-202609250817.fire.q-ctrl.com 1 2026-09-24 2026-09-24 ok
fix-202607270927.fire.q-ctrl.com 3 2026-07-26 2026-09-27 ok
scup-4247.fire.q-ctrl.com 5 2026-05-18 2026-09-19 ok
blck-9457.fire.q-ctrl.com 4 2026-04-10 2026-08-15 ok
scup-5377.fire.q-ctrl.com 5 2026-07-14 2026-09-14 ok
scup-6677.fire.q-ctrl.com 2 2026-08-27 2026-08-27 ok
exp-20260108.fire.q-ctrl.com 5 2026-05-14 2026-09-15 ok
scup-5408.fire.q-ctrl.com 3 2026-06-22 2026-08-23 ok
blck-9508.fire.q-ctrl.com 5 2026-05-04 2026-09-07 ok
pa-2618.fire.q-ctrl.com 5 2026-05-25 2026-09-27 ok
test-20260728.fire.q-ctrl.com 3 2026-07-28 2026-09-28 ok
scup-6678.fire.q-ctrl.com 1 2026-08-27 2026-08-27 ok
scup-4088.fire.q-ctrl.com 5 2026-05-11 2026-09-11 ok
scup-3488.fire.q-ctrl.com 3 2026-06-12 2026-08-13 ok
scup-6298.fire.q-ctrl.com 1 2026-09-07 2026-09-07 ok
pa-4709.fire.q-ctrl.com 7 2026-05-30 2026-09-29 ok
pa-5429.fire.q-ctrl.com 6 2026-05-31 2026-09-30 ok

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/q-ctrl.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/q-ctrl.com.