Classy Inter-Domain Routing Enumeration

This document describes hardCIDR, a Bash script developed to automate discovery of an organization's IP netblocks and ASNs by querying RIR APIs (notably ARIN), BGP route servers, and supporting resources; it covers background on RIRs/ASNs, preparation steps, script options (including LACNIC handling and use of ipcalc), expected outputs (CSV files and a CIDR list), and availability on the TrustedSec GitHub for use in penetration testing.