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

Results forimplementationist.com

Domain Name	First seen	Still exists
*.implementationist.com	2025-05-26T05:39:30.898Z
iknow.implementationist.com	2018-11-16T09:19:49.485Z
clicked.implementationist.com	2018-11-16T09:19:49.207Z
mail.implementationist.com	2018-11-16T09:16:42.272Z
help.implementationist.com	2018-11-12T17:34:15.423Z
app.implementationist.com	2018-11-08T21:35:12.730Z
events.implementationist.com	2018-10-03T02:50:50.271Z
remotein.implementationist.com	2018-10-03T02:12:41.553Z
propay.implementationist.com	2018-08-31T18:31:05.339Z
yourfiles.implementationist.com	2018-08-25T21:25:03.701Z
social.implementationist.com	2018-08-25T19:49:25.289Z
partners.implementationist.com	2018-08-25T19:46:57.096Z
insta.implementationist.com	2018-07-13T06:49:53.578Z
schedule.implementationist.com	2018-07-10T19:47:08.633Z
awesomeness.implementationist.com	2018-07-10T17:52:52.909Z
blog.implementationist.com	2018-07-10T17:52:52.413Z
www.implementationist.com	2018-07-05T15:10:10.980Z
customerpayments.implementationist.com	2018-06-30T02:40:11.076Z
myportal.implementationist.com	2018-06-20T23:46:39.486Z