When you see a subdomain of a major firm like EY, you expect it to work and to be transparent about who runs it. api.discovernw.ey.com fails on both fronts. The site currently returns a 404 error, so there's nothing to actually see or use. More concerning, the domain registration is completely hidden with no public WHOIS record, which is unusual for a professional services operation.
There are no contact details, no about page, and no privacy policy or terms of service anywhere. For a legitimate business, these are basic requirements. The lack of any history in the Wayback Machine or on Trustpilot means there's no external track record to check against.
Is api.discovernw.ey.com a scam? We can't say it's actively malicious, but we can say it's not functioning and offers no accountability. Most professional services firms make their contact info and legal policies easy to find. This site does the opposite. Until it shows signs of life and basic transparency, you should steer clear.