How to Detect If a FiveM Server Is DDoS-Protected

Resolve the server's join code to its underlying IP and look at who owns that IP. If the ASN and organization belong to a network known for DDoS scrubbing rather than a generic residential or small business ISP, the server is very likely sitting behind some form of DDoS protection.

You can't see a firewall rule or a scrubbing center directly — what you can see is which network the traffic is routed through. Providers that specialize in DDoS mitigation operate their own address space and announce it under their own ASN, so traffic to a protected server's IP shows up as belonging to that mitigation network's organization, not to whatever consumer or budget host the server owner originally signed up with. This is the same principle used to spot a CDN in front of a website, applied to a game server's connect endpoint instead of a web address.

Unprotected or raw hosting, by contrast, typically resolves to an ASN and organization name that matches an ordinary VPS provider or dedicated server host with no particular DDoS-mitigation branding — the kind of network that would need to null-route a server's IP entirely under sustained attack rather than filter the bad traffic and keep it online.

Paste the server's join code into a resolver and look at the ASN/ISP or hosting field it returns alongside the IP. That field is exactly the "who owns this address space" information described above, and it's the fastest way to see it without running your own network tools. For a full walkthrough of what each part of that field means, see how to read ASN, ISP and hosting data.

A few patterns tend to repeat: servers hosted directly with providers that market themselves specifically around game-server DDoS protection almost always show that provider's name in the ASN/org field, since the protection is inseparable from the hosting itself. Servers that instead sit behind a specialized on-demand mitigation service will show that mitigation provider's ASN even though the server itself is hosted somewhere else entirely — the traffic is proxied through the protection layer before it ever reaches the origin box. Either pattern is a reasonably strong signal of protection. A generic consumer ISP or an unbranded budget VPS host in that field is a signal of the opposite — the IP is exposed as-is.

For a server owner choosing where to host, whether a provider's plan includes real DDoS mitigation or just a marketing claim is worth confirming independently rather than taking on faith, since it directly affects how the server behaves during an attack. For players, the hosting a server runs on is one data point (among several) for judging whether a server that advertises itself as stable is likely to actually stay online during the kind of disruptive incidents that are common in competitive FiveM communities.