Figure 5
IODA saw reachable blocks fall while routes stayed announced
Archived IODA signals against the same reference window, on a shared vertical scale. Texas, far from the storm, is shown for comparison.
Active probing: reachable /24 blocks
BGP: visible /24 blocks
IODA measures /24 blocks, not addresses, so its percentages are not directly comparable to the reply rates in Figures 1–4. Each signal is normalized to its own reference.
