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How to Choose Proxies for an Anti-Detect Browser

2026-08-05 · 7 min read

For most multi-account work, use residential or ISP proxies with a sticky session, one dedicated proxy per profile, located in the region the account claims to be in. Datacentre proxies are cheap and fast but widely recognised, and rotating proxies break sessions mid-login.

The four types, plainly

Type	What it is	Best for	Weakness
Datacentre	IPs from hosting providers	Scraping, testing, low-sensitivity work	Address ranges are published and widely blocked
ISP (static residential)	Residential IPs hosted in a datacentre	Long-lived accounts	More expensive; smaller pools
Residential	Real consumer connections	Sensitive platforms	Slower, priced by bandwidth
Mobile	Carrier IPs, shared by many users	The most hostile platforms	Most expensive; variable speed

Sticky beats rotating for accounts

Rotating proxies give you a new IP every request or every few minutes. That is right for scraping and wrong for accounts.

A logged-in session whose IP changes three times mid-visit looks like a hijacked session, because that is exactly what a hijacked session looks like. Use sticky sessions — the same IP held for the length of your work — and keep the same proxy assigned to the same profile over time.

The mismatches that actually flag you

• Timezone vs IP. A German IP with an Asia/Ho_Chi_Minh timezone is a contradiction a script can catch. Anti4 applies a timezone coherent with the profile rather than leaking your machine's.
• Language vs region. Accept-Language headers should be plausible for where the IP says you are.
• WebRTC leaks. WebRTC can reveal your real local address even behind a proxy. Test for it before trusting a setup.
• DNS leaks. If DNS resolves outside the proxy, the resolver's location contradicts the exit IP.

Read how fingerprinting works for why coherence beats any single value.

How to test a proxy before trusting it

1. Attach it to a profile and open an IP-check site. Confirm the country and that it is not flagged as a known datacentre range.
2. Run a WebRTC leak test in the same profile.
3. Check the reported timezone matches the IP's region.
4. Reload after ten minutes and confirm the IP has not rotated.

Budgeting

Proxies usually cost far more than the browser. Residential bandwidth is billed per gigabyte and ordinary browsing consumes more than people expect. Price your setup at the number of profiles you will actually run — that cost, not the browser licence, is what decides whether the operation makes sense.