Three characters, .net, X-to-Y. O2T reads as order to tracking, offline to text, or operations to technology, and each of those maps to a business somebody is running.
Order to tracking is the part of the commerce experience customers actually judge you on. After the purchase, the only thing they care about is where the thing is, and the software serving that moment is a real category with real spend. A name that states the handoff is a clean fit.
Operations to technology fits consultancies and transformation practices, where the whole pitch is moving manual process into systems.
The X-to-Y form is what makes short letter strings usable rather than arbitrary. It gives a reader something to parse instead of three characters to memorise cold, which is the difference between a name and a code.
Three characters on a major extension, permanently scarce.
The name is available. Enquiries welcome.