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

Results forwww.malloc.jp

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-03-26T14:47:36.202	2020-03-26T13:47:35	2020-06-24T13:47:35	www.citana.ai	www.malloc.jp	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-03-26T14:47:35.908	2020-03-26T13:47:35	2020-06-24T13:47:35	www.citana.ai	www.malloc.jp	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-01-27T20:38:21.384	2020-01-27T19:38:20	2020-04-26T19:38:20	localhostel.com.br	www.malloc.jp	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-01-27T20:38:20.399	2020-01-27T19:38:20	2020-04-26T19:38:20	localhostel.com.br	www.malloc.jp	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-11-28T18:19:16.044	2019-11-28T17:19:15	2020-02-26T17:19:15	floeren.app	www.malloc.jp	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-11-28T18:19:15.792	2019-11-28T17:19:15	2020-02-26T17:19:15	floeren.app	www.malloc.jp	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-09-29T10:14:07.732	2019-09-29T09:14:06	2019-12-28T09:14:06	www.malloc.jp	www.malloc.jp	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-09-29T10:14:06.642	2019-09-29T09:14:06	2019-12-28T09:14:06	www.malloc.jp	www.malloc.jp	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-09-29T07:51:25.362	2019-09-29T06:51:24	2019-12-28T06:51:24	www.malloc.jp	www.malloc.jp	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-09-29T07:51:24.837	2019-09-29T06:51:24	2019-12-28T06:51:24	www.malloc.jp	www.malloc.jp	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3