6 dated technical articles. These pages record the methods and claims as published; follow each article's source links and update notes for its current scope.
How Voidly uses BGP prefix withdrawal patterns and IODA data to detect internet shutdowns before any probe can send a packet — baseline per-country reachability, the difference between BGP silence and withdrawal, and how BGP fits into the composite confidence score.
Censorship and information control · Engineering and infrastructure
How Voidly uses CAIDA AS-Rank, RIPE NCC RIS route collector data, and PeeringDB to build an AS-level topology, classify censorship choke points (IXP, transit AS, edge ISP), compute per-country probe diversity scores, and feed AS path features into the anomaly classifier.
Censorship and information control · Engineering and infrastructure
How Voidly uses per-ASN probe vantages to distinguish nationwide censorship orders from selective ISP-level blocking — BGP peer classification from CAIDA AS-Rank, ISP blocking fingerprints by interference type, differential blocking detection, and propagation speed analysis that reveals enforcement mechanisms.
How Voidly tracks the full history of blocking events for individual domains across all probe countries — DomainMeasurementSummary continuous aggregate, first/last-seen tracking, the /v1/domains/{domain}/history API, temporal pattern analysis (23% of blocks resolve within 7 days), cross-country blocking correlation, and domain freshness scoring.
Censorship and information control · Engineering and infrastructure
How Voidly aggregates per-measurement interference probabilities into per-country censorship scores: recency decay with a 30-day half-life, ASN diversity weighting, domain category weighting, cross-source corroboration multipliers, 90-day rolling windows, Gaussian temporal smoothing, and bootstrap confidence bands.
Censorship and information control · Engineering and infrastructure
How Voidly aligns OFAC sanctions packages, EU/UN designation timelines, and bilateral diplomatic signals with measured internet shutdown events — building the diplomatic-isolation feature for the shutdown forecasting model.