Fast IP Ping
Modby Fallen_Breath
Yeet the laggy reversed DNS lookup for literal IP server addresses
Type
Mod
CurseForge Downloads
51,549,316
CurseForge ID
904356
Modrinth Downloads
22,593,581
Modrinth ID
9mtu0sUO
Last Updated
Sep 10, 2026
Description

Yeet the laggy reversed DNS lookup for literal IP server addresses
Extracted from the yeetServerIpReversedDnsLookup option in TweakerMore Mod
What & Why & How
For servers whose addresses are represented solely by a literal IP, e.g. 192.168.2.10:25565, disable reverse DNS lookups in the corresponding InetAddress object
Many non-loopback IPs lack associated domain names, which makes reverse lookups time-consuming
// java.net.InetAddress#getHostName(boolean) String getHostName(boolean check) { if (holder().getHostName() == null) { // It will be null if InetAddress.getByName() received a literal IP holder().hostName = InetAddress.getHostFromNameService(this, check); // <-- takes forever } return holder().getHostName(); }This option sets the domain of those servers directly to their IP, bypassing the reverse DNS check
This results in a 1s ~ 5s reduction in time for servers with literal IP address. Affects the following environments:
- Pinging the server in the server list screen
- Connecting to the server
Environment
- Client-side only
- Fabric / Forge / NeoForge mod loader. No extra requirement is needed
Recommended Gear
AffiliateHardware and extras that pair well with this mod.
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