# What is an ISP proxy? | SoftGlaze Browser glossary > An ISP proxy runs on a server but uses an IP registered to a consumer internet provider. How it differs from residential and datacenter proxies. - Canonical URL: https://browser.softglaze.com/glossary/isp-proxy - Last updated 2026-11-09 --- [Proxies and networking](https://browser.softglaze.com/glossary?category=proxies-and-networking) ## ISP proxy Also called static residential proxy, static ISP proxy, dedicated ISP proxy Definition An ISP proxy, sometimes called a static residential proxy, is a proxy that runs on a server in a data centre but uses an IP address registered to an internet service provider, combining server speed with an address that looks like a consumer connection. Last updated 7 November 2026 ### How it works An internet provider can lease or route some of its address ranges to a hosting company. Proxies run on servers in that company’s racks, but the IP addresses still belong to the provider’s network, the one its number in the routing system (its ASN) names. To a site that looks up who owns an address, the visit appears to come from that provider rather than from a hosting firm. ISP proxies are usually rented per IP address and keep the same address for as long as you rent it. That is why they are also called static residential proxies, although no household is involved. ### Why it matters when you run several accounts A logged-in account does best with an address that doesn’t change, and an ISP proxy gives you one with server-class speed and uptime. How residential it looks depends on the range: lookup services can see the network and, in some cases, how the range is used, so quality varies a lot between providers. Treat the label as a claim to test, not a guarantee. ### How SoftGlaze Browser handles it Add an ISP proxy like any other, as HTTP and SOCKS5, with or without a login, and assign it to one profile so that profile keeps one address. The check shows its exit IP, country, latency and whether the address is on any of 3 DNS blocklists, and a health grade from A to F. The **Sticky** rotation policy keeps a profile on its own fixed proxy. ### Sources 1. [RFC 1930: Guidelines for creation, selection, and registration of an Autonomous System](https://www.rfc-editor.org/rfc/rfc1930) IETF Outside sources were checked in November 2026. Browsers, standards and vendors' pages change, so details that depend on them are as of that month. ### Related terms - [Residential proxy](https://browser.softglaze.com/glossary/residential-proxy) A residential proxy is a proxy whose exit IP address belongs to a home internet connection, so sites see traffic arriving from an ordinary household rather than from a server in a data centre. - [Datacenter proxy](https://browser.softglaze.com/glossary/datacenter-proxy) A datacenter proxy is a proxy whose exit IP address belongs to a hosting or cloud company's data centre, which makes it fast and cheap but easy for sites to recognise as a server rather than a person's connection. - [ASN (Autonomous System Number)](https://browser.softglaze.com/glossary/asn) An Autonomous System Number (ASN) is the number that identifies a network on the internet's routing system, such as an internet provider, a mobile operator or a hosting company, and every public IP address belongs to one. - [Sticky session](https://browser.softglaze.com/glossary/sticky-session) A sticky session is a proxy setting that keeps you on the same exit IP address for a period of time or until you ask for a new one, instead of changing it on every request. - [IP reputation](https://browser.softglaze.com/glossary/ip-reputation) IP reputation is the judgement that security services and websites keep about an IP address, based on what has been seen from it before (spam, attacks, fraud, heavy automation) and on the kind of network it belongs to. ### Read more on this site - [Residential vs datacenter proxies](https://browser.softglaze.com/blog/residential-vs-datacenter-proxies) - [Proxy pool](https://browser.softglaze.com/features/proxy-pool) - [Docs: proxies](https://browser.softglaze.com/docs/proxies) ### See it in SoftGlaze Browser Separate profiles, each with its own cookies, device values and proxy, on Windows. Try the app's screens in your browser first, or start the free trial; no card needed. [Download for Windows](https://browser.softglaze.com/download) [Try the demo](https://browser.softglaze.com/demo) [All terms](https://browser.softglaze.com/glossary)