DNS (Domain Name System) is the protocol that translates human-readable domain names (like example.com) into IP addresses (like 93.184.216.34) that computers use to route traffic. It functions as the internet phone book.
When you type a URL in your browser, your device sends a DNS query to a resolver (usually provided by your ISP). The resolver checks its cache and, if needed, queries authoritative name servers to find the IP address for that domain. The resolved IP is returned to your device, which then connects to that address. DNS results are cached at multiple levels to reduce lookup times.
Most proxy users only need to understand this well enough to debug it, not configure it directly.
USER-country-de-session-task01The username carries the config: "country-de" picks the exit, "session-task01" holds it in place while DNS does its work underneath. No separate API call or handshake -- the label is the setting.
Measure this metric without a proxy first, so you know what the gateway adds versus what was already there.
This concept governs the connection to the gateway and the gateway to the target -- check both when something looks wrong.
KnoxProxy manages this at the infrastructure layer, so most jobs only need to understand it well enough to debug.
A new ISP, VPN, or office network can change how this behaves -- confirm it again after any local network change.
A web scraping pipeline pre-resolves DNS for 10,000 target domains to avoid DNS lookup latency during the actual data collection run.
DNS queries can reveal which websites you visit, even when using a proxy. You need to ensure DNS requests also route through your proxy to prevent DNS leaks that expose your browsing activity.
A DNS resolver is a server that handles DNS lookups on behalf of clients. Common public resolvers include Google (8.8.8.8), Cloudflare (1.1.1.1), and Quad9 (9.9.9.9). Your ISP also runs its own resolver.
Slow DNS resolution adds latency to every new connection. Using a fast DNS resolver close to your proxy server reduces lookup times. Some proxy services handle DNS internally to optimize this.
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