research: establish global network address book baseline

address-book/README.md

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+# Address book
+
+This is the readable view of the canonical records in [`data/entities.csv`](../data/entities.csv).
+
+| Directory | What it covers |
+|---|---|
+| [Governance, identifiers, and standards](governance-and-standards.md) | ICANN/IANA, open standards, number-resource coordination |
+| [Regional Internet Registries](regional-registries.md) | The five RIR service regions and public resource directories |
+| [Infrastructure and operations](infrastructure-and-operations.md) | DNS root, IXPs/peering, routing visibility, physical transport, operator communities |
+| [Security and resilience](security-and-resilience.md) | Incident-response directories and routing-security coordination |
+
+## How to use it
+
+Start with the coordinating body or directory for the function you need. For example:
+
+- IP address or ASN registration → the appropriate RIR;
+- protocol specification → IETF Datatracker/RFC system;
+- interconnection discovery → PeeringDB, IXP member lists, or IX-F exports;
+- root-zone or protocol registry → IANA;
+- incident-response team discovery → FIRST or Trusted Introducer;
+- BGP visibility → Route Views or RIPE RIS;
+- submarine cable discovery → TeleGeography map, followed by operator/regulator verification.