Three characters, .net, X-to-Y pattern. The structure makes it readable as a statement rather than a random string, which is what separates a good short domain from a licence plate.
N2M has usable readings in several directions. Network to mobile, news to media, node to mesh, need to match. The last of those suits any marketplace or matching platform, which is a large and permanent category. Network to mobile fits telecoms and connectivity, where the .net is exactly right.
Three characters is the shortest length at which a domain is still memorable as a unit rather than as separate letters, and the inventory across every major extension was fully claimed decades ago. What circulates now is what existing holders choose to release.
No spelling ambiguity, no hyphen, fits in any logo, reads correctly at any size, and survives being said aloud once.
The name is available. Offers welcome.