AS399358

Name: AS399358 — Anthropic, PBC
Creator: ipdex

Anthropic, PBC Unknown registered in United States

1IPv4 prefixes

2IPv6 prefixes

100%RPKI-valid

#78,442AS Rank

326/327RIS visibility

#7,302Rank in United States

2023-09-20Allocated

Anthropic, PBC (AS399358) — Unknown, registered in United States. announces 1 IPv4 prefixes + 2 IPv6 prefixes. Rank in United States: #7302. Allocated: 2023-09-20.

IPv4 1IPv6 2

Announced prefixes · 3

RPKI: rpki.cloudflare.com · 2026-06-17

Routing: 1 IPv4 · 2 IPv6 announced · RIS visibility 326/327 RIS peers · RIPEstat · 2026-06-17

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	3
2026-06-13	3

AS topology · Customer cone 1

Providers · 1

AS13335 Cloudflare, Inc.

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