This page isn't a typical website. It's a technical hostname inside Microsoft's network, likely part of their Skype or Teams media routing infrastructure. The long, unwieldy address and invalid SSL certificate are red flags for a normal online store or blog, but here they just show that this service was never meant to be accessed directly by a browser.
For consumers wondering 'is cosmic.office.net a scam,' the answer is no — it's just a backend component. The lack of contact information, privacy policy, or about page makes perfect sense when you realize this isn't a business seeking customers. No one is trying to sell you anything or collect your data.
The only real issue is the certificate mismatch, which means if you did try to visit, your browser would show a warning. That's not a sign of fraud, just a misconfiguration. This domain is not a threat to anyone, and you can move on with confidence.