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

Results for*.mobileapi-v2.eu.intercom.io

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-10-08T13:21:29.315	2021-10-01T00:00:00	2022-10-30T23:59:59	eu.intercom.io	*.mobileapi-v2.eu.intercom.io	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2021-10-08T13:21:29.315	2021-10-01T00:00:00	2022-10-30T23:59:59	eu.intercom.io	*.mobileapi-v2.eu.intercom.io	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2021-10-01T12:47:35.414	2021-10-01T00:00:00	2022-10-30T23:59:59	eu.intercom.io	*.mobileapi-v2.eu.intercom.io	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2021-10-01T12:47:35.414	2021-10-01T00:00:00	2022-10-30T23:59:59	eu.intercom.io	*.mobileapi-v2.eu.intercom.io	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon