It can be anything! An apex, subdomain, or even a URL.

Results forhostmaster.jayrockefeller.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-11-08T06:44:09.048	2025-11-08T05:45:38	2026-02-06T05:45:37	hostmaster.jayrockefeller.com	hostmaster.jayrockefeller.com	C=US, O=Let's Encrypt, CN=R12
2025-11-08T06:44:08.837	2025-11-08T05:45:38	2026-02-06T05:45:37	hostmaster.jayrockefeller.com	hostmaster.jayrockefeller.com	C=US, O=Let's Encrypt, CN=R12
2023-01-17T21:06:13.803	2023-01-17T20:06:13	2023-04-17T20:06:12	jayrockefeller.com	*.jayrockefeller.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T21:06:13.553	2023-01-17T20:06:13	2023-04-17T20:06:12	jayrockefeller.com	*.jayrockefeller.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T19:07:18.501	2022-11-18T18:07:17	2023-02-16T18:07:16	jayrockefeller.com	*.jayrockefeller.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T19:07:18.135	2022-11-18T18:07:17	2023-02-16T18:07:16	jayrockefeller.com	*.jayrockefeller.com	C=US, O=Let's Encrypt, CN=R3