Branch
OfficialBranch documents static /32 addresses used to deliver postbacks and webhooks. Allowlist these IPs when your receivers sit behind a firewall. Branch periodically expands the list — check their allowlist-expand notices before old addresses are retired.
Autonomous systems (ASNs)
Known ASNs used by Branch.
Webhook egress network
Third-party hosting & clouds
Amazon Web Services
AS16509
Published Branch webhook/postback /32s are AWS public IPs. Prefer the Branch docs allowlist over broad AWS prefixes.
Branch postback & webhook IPs
DocumentationDocs table only — not a machine-readable feed.