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.

100 hosts (first page) · 263 ms

HostCertsFirst seenLast seen
rws.nl 6 2025-09-09 2026-10-02
vbond-b2fd6d3e-0d39-489f-94b2-f146bbcf3681-0.rws.nl 1 2026-02-05 2026-02-05
vbond-560a08cd-02d1-4231-be3b-20e18de8e01a-0.rws.nl 1 2026-05-20 2026-05-20
vedge-C8500-12X-TTM292400B4-1.rws.nl 1 2026-02-26 2026-02-26
vmanage-0ab7f749-7f00-4bdc-807f-2951a023e3e4-1.rws.nl 1 2026-05-20 2026-05-20
vsmart-14b9414e-91fc-4d34-9ce6-bf7ed8dac907-1.rws.nl 1 2026-02-05 2026-02-05
relay-1.rws.nl 4 2025-08-15 2026-08-26
mqtt-prd-broker01.rws.nl 1 2026-04-21 2026-04-21
vsmart-e98f7735-541d-438f-afd1-792ac8131d01-2.rws.nl 1 2026-02-05 2026-02-05
vbond-4ef25824-1dbc-464a-8964-3c6296caa9d8-2.rws.nl 1 2026-02-05 2026-02-05
vedge-C8500-12X-TTM292400BL-2.rws.nl 1 2026-02-19 2026-02-19
relay-2.rws.nl 4 2025-08-15 2026-08-26
mqtt-prd-broker02.rws.nl 1 2026-04-21 2026-04-21
spin2.rws.nl 2 2025-06-26 2026-07-03
acceptatie.spin2.rws.nl 3 2025-06-26 2026-07-03
opleiding.spin2.rws.nl 3 2025-06-26 2026-07-03
test.spin2.rws.nl 3 2025-06-26 2026-07-03
samenwerkenv2.rws.nl 1 2026-05-15 2026-05-15
vmanage-79b03a1d-0949-49fe-ad52-eaa03cfd0e3c-3.rws.nl 1 2026-02-05 2026-02-05
relay-3.rws.nl 4 2025-08-15 2026-08-26
mqtt-prd-broker03.rws.nl 1 2026-04-21 2026-04-21
vmanage-4254517a-f612-4253-954a-56165b1de292-4.rws.nl 1 2026-03-03 2026-03-03
relay-4.rws.nl 4 2025-08-15 2026-08-26
mqtt-prd-broker04.rws.nl 1 2026-04-21 2026-04-21
v14.rws.nl 3 2026-04-09 2026-09-07
relay-5.rws.nl 4 2025-08-15 2026-08-26
mqtt-prd-broker05.rws.nl 1 2026-04-21 2026-04-21
relay-6.rws.nl 4 2025-08-15 2026-08-26
vmanage-4254517a-f612-4253-954a-56165b1de292-7.rws.nl 1 2026-09-10 2026-09-10
test.lma.rws.nl 2 2025-09-02 2025-09-02
waterinfo-extra.rws.nl 1 2026-02-10 2026-02-10
ctddata.rws.nl 1 2026-05-15 2026-05-15
acc-ctddata.rws.nl 2 2026-04-22 2026-10-07
centraaltoegangspuntdata.rws.nl 2 2025-09-17 2026-10-07
geoweb.rws.nl 1 2025-10-28 2025-10-28
tmxweb.rws.nl 1 2025-10-30 2025-10-30
www.tmxweb.rws.nl 1 2025-10-30 2025-10-30
ddapi-gslb.rws.nl 1 2025-10-16 2025-10-16
www.ddapi-gslb.rws.nl 1 2025-10-16 2025-10-16
esb.rws.nl 2 2026-03-18 2026-03-18
tws-esb.rws.nl 1 2026-05-12 2026-05-12
acceptatie.tws-esb.rws.nl 2 2026-02-12 2026-08-18
test.tws-esb.rws.nl 1 2025-10-30 2025-10-30
acceptatie.esb.rws.nl 1 2026-03-03 2026-03-03
test.esb.rws.nl 1 2025-12-02 2025-12-02
www.test.esb.rws.nl 1 2025-12-02 2025-12-02
www.esb.rws.nl 2 2026-03-18 2026-03-18
dynac.rws.nl 2 2025-10-02 2026-09-22
ac-dynac.rws.nl 3 2025-10-02 2026-09-16
www.ac-dynac.rws.nl 1 2025-10-02 2025-10-02
lp-dynac.rws.nl 3 2025-10-02 2026-09-23
www.lp-dynac.rws.nl 1 2025-10-02 2025-10-02
st-dynac.rws.nl 2 2025-10-02 2026-09-23
www.st-dynac.rws.nl 1 2025-10-02 2025-10-02
cv-dynac.rws.nl 2 2025-10-02 2026-09-23
www.cv-dynac.rws.nl 1 2025-10-02 2025-10-02
www.dynac.rws.nl 1 2025-10-02 2025-10-02
webportaal-acc.rws.nl 1 2025-12-09 2025-12-09
waterwebservices-acc.rws.nl 1 2026-02-09 2026-02-09
svs-acc.rws.nl 1 2025-11-13 2025-11-13
tgox-acc.rws.nl 3 2025-11-14 2026-10-06
www.tgox-acc.rws.nl 2 2025-11-14 2025-11-19
mip-proxy-acc.rws.nl 1 2026-06-17 2026-06-17
gridacc.rws.nl 6 2026-04-18 2026-09-15
*.gridacc.rws.nl 1 2026-04-18 2026-04-18
backend.gridacc.rws.nl 5 2026-05-29 2026-09-15
compliance.gridacc.rws.nl 5 2026-05-29 2026-09-15
iwks.gridacc.rws.nl 5 2026-05-29 2026-09-15
status.gridacc.rws.nl 5 2026-05-29 2026-09-15
iot.gridacc.rws.nl 5 2026-05-29 2026-09-15
www.gridacc.rws.nl 5 2026-05-29 2026-09-15
port-enc.rws.nl 1 2025-10-16 2025-10-16
acc-port-enc.rws.nl 2 2026-03-11 2026-08-27
www.port-enc.rws.nl 1 2025-10-16 2025-10-16
STM-SQL-000-01.ad.rws.nl 1 2025-11-13 2025-11-13
www.stm-sql-000-01.ad.rws.nl 1 2025-11-13 2025-11-13
owas.ad.rws.nl 1 2025-10-20 2025-10-20
nbiw.ad.rws.nl 1 2026-05-10 2026-05-10
imgdownload.rws.nl 3 2025-09-09 2025-12-04
grid.rws.nl 5 2026-04-25 2026-09-30
*.grid.rws.nl 2 2026-04-25 2026-04-25
backend.grid.rws.nl 3 2026-05-13 2026-09-30
compliance.grid.rws.nl 3 2026-05-13 2026-09-30
apim-internal.datalab-01.azure.grid.rws.nl 3 2026-06-17 2026-08-30
*.apim-internal.datalab-01.azure.grid.rws.nl 3 2026-06-17 2026-08-30
apim-portal.datalab-01.azure.grid.rws.nl 4 2026-06-17 2026-08-31
*.apim-portal.datalab-01.azure.grid.rws.nl 4 2026-06-17 2026-08-31
apim.datalab-01.azure.grid.rws.nl 3 2026-06-17 2026-08-30
*.apim.datalab-01.azure.grid.rws.nl 3 2026-06-17 2026-08-30
visie-vaarwegen.datalab-01.azure.grid.rws.nl 2 2026-09-09 2026-09-09
*.visie-vaarwegen.datalab-01.azure.grid.rws.nl 2 2026-09-09 2026-09-09
container.datalab-01.azure.grid.rws.nl 3 2026-06-03 2026-08-31
*.container.datalab-01.azure.grid.rws.nl 3 2026-06-03 2026-08-31
appcontainer.datalab-01.azure.grid.rws.nl 2 2026-04-28 2026-04-28
*.appcontainer.datalab-01.azure.grid.rws.nl 2 2026-04-28 2026-04-28
grafana.vm-02.azure.grid.rws.nl 7 2025-07-18 2026-09-22
www.grafana.vm-02.azure.grid.rws.nl 1 2025-07-18 2025-07-18
grafana-acc.vm-02.azure.grid.rws.nl 6 2026-05-19 2026-09-16
keycloak-acc.vm-02.azure.grid.rws.nl 6 2026-05-25 2026-09-22
fat-acc.vm-02.azure.grid.rws.nl 6 2026-05-25 2026-09-22

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/rws.nl.

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/rws.nl.