What does 'Broadly Reachable Domain' mean in SOC analysis?
It represents a domain that receives links from a large number of distinct sources (high harmonic centrality) but whose linking sources are not authoritative enough to push it into the mainstream popularity tier (mid PageRank). Typical examples are legitimate SMBs, regional services, or niche communities that have grown organic backlinks without large-publisher coverage. Treated as a safe rescue signal.