Cloudflare 521 Error: Web Server Down

What can a proxy IP do for you when a website suddenly jerks off?

Everyone must have encountered this situation: open the web page suddenly popped upCloudflare 521 errorThe first thing you need to do is to change the proxy IP address of the courier, just as the courier told you that "the warehouse is on fire, and I can't get the stuff out". Don't smash your keyboard in a hurry, in fact, change the "courier" can solve the problem - that is, the proxy IP. ipipgo's proxy service is equivalent to letting the courier in different areas to help you try to pick up the goods again and again, and there is always a sorting center can work properly! The problem is that you can use a proxy IP to help you pick up your shipments from different areas.

Hands-on teaching you to use proxy IP to salvage 521 errors

First log in to the ipipgo backend and selectDynamic Residential AgentsType. Here's a tip: don't choose a fixed IP address, just switch it randomly like opening a blind box for a higher success rate. Next, fill in the proxy parameters in the browser settings, and be careful to turn on theauto-retry function(It's like setting up a delivery guy to knock on your door every 5 minutes).

Why Proxy IPs Cure Cloudflare's "Paralysis"?

The web server is like a cash register that is prone to temper tantrums, and error 521 is a sudden "strike". Use the proxy equivalent of ipipgo:
1. Switching to different cashier lanes (different IP entrances)
2. Pick less crowded time slots to visit (automatic avoidance of congested nodes)
3. Disguised as a VIP customer (high anonymity mode penetration detection)
Tests have found that the success rate with dynamic proxies is 2-3 times higher than with fixed IPs, especially when the source station has intermittent jerks.

QA time: the pitfalls you may have encountered

Q: What should I do if I change my agent or 521?
A: First check if the proxy is in effect (use ipipgo's detection tool), then try switching the protocol type, replace HTTP with SOCKS5 and try it.

Q: Will ipipgo's IP be hacked by Cloudflare?
A: Our residential agents update 20%IP pool every day, which is 3 times faster than the common service providers in the market. If it really happens, contact customer service to change the new IP in seconds.

Q: Can I use this method on my cell phone?
A: Generate QR code in ipipgo background, scan it with your cell phone to automatically configure it, both Android and Apple are supported.

Proxy IPs are particularly useful in this scenario

In addition to curing the 521 error, ipipgo's agent also works in these cases:
- Site loads stuck at 50% and won't budge
- Repeatedly refreshing with a 5xx series of errors
- Users in some areas can't open
Last week there was a customer doing cross-border e-commerce, using our Japanese node hard to grab the limited edition hand puppet, when the source station has been 521 for half an hour.

Lastly, I would like to say: don't die when you encounter a website that is not windy, and flexibly switch the proxy node of ipipgo, just like putting a spare tire on the network channel. Once I witnessed the technical small brother with this method, in the double eleven shopping than colleagues faster than two minutes order success - to know that time the official website are 521 brush not out!