Being responsible for a Financial Institution's DNS for a time, I look back at our 300+ domain portfolio that we kept. Basically we had typo-squatting domains, and domains that were even slightly related to an offering, or product we had going at the time.
When the domains didn't serve any purpose any more, we either directed them back to our main site, let them expire, or sent them nowhere. It all depended on if we wanted it to look like the service was still being offered.
In this case, I would suspect that all of these domains in some form relate either to the current company or any of the past initiatives that are either still paying him money, still have business cards for, or in some form are part of the global company underneith ECN Holdings. With domains being as little as $5/year to maintain, why not keep them around, but direct them to the site where people can still find and contact you... possibly to see if you are still in business and what you're doing now.
My analysis of R. Hauppe without talking to him is he's a Tech-Head who probably registered a bunch of domains as it mattered to him. I personally own 15 domains I think and 5-7 of them redirect back to my main site because I didn't feel like letting the domain lapse.
Additionally - due to his certifications in the security field, he has obviously realized that Apache running PHP and PERL are much safer to put on the internet than MS based products and they are much easier to develop on and script on. Have you ever tried to port PERL code on Windows? If you do anything other than .asp, you're skreewed, iMHO.
Additionally, the connection behind 69.70.20.245 appears to not be your average 'cable modem', but partial-T1 business internet with a dedicated ISP doled out by this Videotron.ca company which appears to offer everything from residential DSL to very high speed ATM, etc.
