Thanks for sharing! I think bitprojects went offline for a while to fix their misconfigurations (Antoine Poinsot - Misbehaving nodes investigation) and now came online again.
Note that /Satoshi:29.1.0(dont-spam-me-bro)/ nodes? - #2 by instagibbs mentions 203.11.72.185 as an example which isn’t included here. I assume there might be even more IP ranges belonging to them. I heard something of about 3000 IPs.