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

Results forwww.londonwebdeveloper.dev

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-03-30T08:04:30.903	2020-03-30T07:04:30	2020-06-28T07:04:30	*.it-tedi.tech	*.londonwebdeveloper.dev	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-03-30T08:04:30.719	2020-03-30T07:04:30	2020-06-28T07:04:30	*.it-tedi.tech	*.londonwebdeveloper.dev	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-03-21T12:19:33.731	2020-03-21T11:19:33	2020-06-19T11:19:33	*.londonwebdeveloper.dev	*.londonwebdeveloper.dev	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-03-21T12:19:33.596	2020-03-21T11:19:33	2020-06-19T11:19:33	*.londonwebdeveloper.dev	*.londonwebdeveloper.dev	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-01-01T12:24:50.269	2020-01-01T11:24:50	2020-03-31T11:24:50	*.londonwebdeveloper.dev	*.londonwebdeveloper.dev	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-01-01T12:24:50.153	2020-01-01T11:24:50	2020-03-31T11:24:50	*.londonwebdeveloper.dev	*.londonwebdeveloper.dev	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3