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

Results forhostmaster.aboutandroid.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-11-12T02:25:09.993	2025-11-12T01:26:39	2026-02-10T01:26:38	hostmaster.aboutandroid.com	hostmaster.aboutandroid.com	C=US, O=Let's Encrypt, CN=R12
2025-11-12T02:25:09.523	2025-11-12T01:26:39	2026-02-10T01:26:38	hostmaster.aboutandroid.com	hostmaster.aboutandroid.com	C=US, O=Let's Encrypt, CN=R12
2024-12-04T15:23:03.118	2024-12-04T14:24:30	2025-03-04T14:24:29	hostmaster.aboutandroid.com	hostmaster.aboutandroid.com	C=US, O=Let's Encrypt, CN=R11
2024-12-04T15:23:00.972	2024-12-04T14:24:30	2025-03-04T14:24:29	hostmaster.aboutandroid.com	hostmaster.aboutandroid.com	C=US, O=Let's Encrypt, CN=R11