Find your Internet Service Provider name, ASN number, and network range. Free ISP detection tool.
An Internet Service Provider (ISP) is a company that provides internet access. Common ISPs include Comcast, AT&T, Verizon, Orange, Deutsche Telekom, and BT. Every internet connection is associated with an ISP.
Your ISP assigns you an IP address and is responsible for routing your internet traffic. They can see which websites you visit (though not the content if you use HTTPS). Using a VPN encrypts traffic between you and the VPN server, preventing your ISP from seeing your browsing.
An Autonomous System Number (ASN) is a unique identifier assigned to each network on the internet. Large ISPs, universities, and cloud providers each have their own ASN. Knowing an IP's ASN can reveal if it belongs to a residential ISP, a VPN, or a data center.
Your ISP can see every domain you connect to via DNS queries, IP addresses of sites you visit, and traffic volumes. With HTTPS they cannot read page content. Using a VPN encrypts all traffic from your ISP, though the VPN provider can then see your traffic instead.
Residential IPs come from home ISPs and look like normal connections. Datacenter IPs from cloud providers like AWS or DigitalOcean are used by VPNs and bots. Many streaming services block datacenter IPs to enforce geographic restrictions.