g1smd - 5:42 pm on Jun 13, 2012 (gmt 0)
It takes very little work to find the PDF describing what the netTrekker-Link-Checker (and goAlexandria) is. Ask any students you know (in the US) if they have heard of it.
If the IP range you quoted belongs to them, then that bot is what it says it is, i.e. it might be unwanted but it isn't fake.
The lack of a space between "compatible;" and "netTrekker" in the User-agent string would be enough to prevent it accessing some of the sites I deal with though.