01-all-seed-gc-lx-01.cdn.gaijin.net is a subdomain of gaijin.net, the domain behind Gaijin Entertainment, the developer of War Thunder and other games. This particular hostname is a content delivery network (CDN) endpoint, not a consumer-facing website. You won't land on a homepage here — instead, it serves game assets to authorized clients. That's why you see a 403 Forbidden page when accessing it directly.
For a CDN node, the signals are clean: no blacklist entries, fast response times, a valid SSL certificate from DigiCert, and no malware flags. The certificate expires in about a week, which is a minor administrative detail rather than a security risk, as companies typically renew before expiry. The bot protection and missing security headers are normal for this type of server.
If you're checking whether 01-all-seed-gc-lx-01.cdn.gaijin.net is safe to connect to from within a game or application, there's no evidence of anything suspicious. It's simply a piece of infrastructure belonging to a well-known company. No scam review is needed here — this isn't a store or a login portal. It's just a server doing its job.