Residential vs Datacenter IP Addresses and Why It Matters

A residential IP address belongs to a home internet connection from a provider like Comcast or BT. A datacenter IP address belongs to a server in a hosting company, such as AWS, Google Cloud or a VPN provider's servers. Websites treat them very differently.

How sites tell them apart

• Who owns the address. Every IP address belongs to a network registered to an organization. Addresses owned by hosting companies are easy to label as datacenter.
• IP databases. Services such as MaxMind and IPinfo label addresses as residential, mobile, business, hosting, VPN or proxy.
• Behavior. Many accounts from one address, or traffic at machine-like speed, raise flags whatever the type.

Why datacenter addresses get blocked

• Bots, scrapers and fake accounts usually run from servers.
• Most VPNs use datacenter servers, so streaming services and banks can spot them easily.
• Google and other sites show more CAPTCHAs to datacenter addresses.

That's why a VPN can trigger blocks and extra checks. See how websites detect VPN traffic.

Mobile addresses

Phone networks share each address among many customers. Sites are cautious about blocking them, because blocking one mobile address can block thousands of real people.

The problem with residential proxies

Residential proxy services sell access to home IP addresses so traffic looks like ordinary users. Many get those addresses from people's devices, often through free apps or browser extensions that quietly share the user's connection. If an app offers to pay you for "unused bandwidth", or a free VPN seems too good to be true, your connection may be the product, and other people's traffic, including abusive traffic, could come from your home address.

For VPN users

• Some VPNs offer a dedicated IP, used only by you, which banks and services flag less.
• Split tunneling lets sites that block VPNs connect directly. See split tunneling explained.
• Make sure your real residential address doesn't leak. Chrome's WebRTC feature can reveal it to sites even with a VPN on; WebRTC Privacy Shield stops that.

Check your own address type

IP lookup sites show your address's owner and type. Check with and without your VPN to see what sites see. More in what your IP address reveals.