Your internet provider
Anthropic, PBC
AS16509 · IP 216.73.217.138
Who is my ISP?
Your internet service provider (ISP) is the company that connects you to the internet and routes your traffic. Every public IP address belongs to a network operator, so we can look up which organization owns the block your address falls in — in your case, Anthropic, PBC (AS16509).
What is an ASN?
An ASN (Autonomous System Number) uniquely identifies a network on the global
internet — for example an ISP, hosting company, or large enterprise. Every public IP is
announced by exactly one ASN, which is how routers worldwide know where to send your traffic.
Yours is shown above as AS16509.
Why might the ISP shown be unexpected?
- VPN or proxy: you'll see the VPN provider's network, not your home ISP.
- Mobile data: carriers often route through regional or wholesale networks.
- Business / campus networks: traffic may exit through an upstream provider's ASN.
Tip: if the name above isn't your provider, you're probably behind a VPN. That's
good for privacy — see how hiding your IP works.
See also your IP location or your full public IP overview.