Three characters on the .net in the X-for-Y form. G4N reads as gateway for networks, grid for nodes, or growth for nonprofits.
The networking readings suit the extension precisely. Gateway, grid, and node are all standard infrastructure vocabulary, and a technical audience parses a name like this as belonging to their world without any prompting.
The underlying asset, as with every name at this length, is scarcity plus utility. Three characters fits in a terminal prompt, a config file, an API endpoint, a logo, and an email address without compromise, and the inventory across every major extension has been fully claimed for decades.
What circulates now is only what existing holders choose to release, and the direction of travel is toward fewer available rather than more, as names settle into long-term corporate use.
Short, technical, and ready for whatever meaning the buyer assigns.
The name is listed. Offers welcome.