---
title: "DNS Prefetching"
slug: "dns-prefetching"
updated: 2025-06-13T20:27:44Z
published: 2025-06-13T20:27:44Z
canonical: "docs.catchpoint.com/dns-prefetching"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.catchpoint.com/llms.txt
> Use this file to discover all available pages before exploring further.

# DNS Prefetching

DNS prefetching is a feature of some browsers designed to reduce DNS resolution delays as users browse the web. This is done by extracting the domain names of links on a page and resolving each domain to an IP address without the user having clicked any of the links, so that if/when the user does click a link, the DNS query is already resolved. Prefetching may be applied to links that the user is likely to follow (such as the top search result in a search engine) or for URLs referenced by the page such as images, javascript, or CSS.

Catchpoint monitors do ***not*** perform DNS prefetching, as it can generate extra requests that would alter results, add unneeded DNS queries, use up additional bandwidth, and potentially create confusion when analyzing a site's performance.