CAIDA is doubtless a gold standard. One thing to note, however, is that the same vantage point avoidance issue applies even more to publicly-documented vantage points. In fact, it was concerns specifically about adversarial avoidance of academic telescopes that led to our research at UW-Madison and eventually to Terrace.

When looking at telescope data like CAIDA’s UCSD-NT, it’s also important to remember that source IPs can be spoofed absent a valid handshake, something that both our and GreyNoise’s analysis accounts for.