Hurricane Ida and Louisiana Infrastructure

This Censys report quantifies Hurricane Ida’s impact on Louisiana’s Internet infrastructure, observing a greater than 50% drop in Internet-facing hosts between August 29 and September 1, 2021. The analysis highlights severe outages across major ISPs (Charter, Cox, AT&T, Eatel) and identifies specific autonomous systems and organizations (e.g., Sewerage and Water Board of New Orleans, Loyola University) that experienced prolonged downtime, using BigQuery-derived host counts and lightweight SNMP sweeps to distinguish widespread network outages from individual power-related outages and to inform recommendations on disaster recovery and multi-provider redundancy.