Using a VPN to change IP address is one of the most common methods to access restricted content and bypass restrictions of websites. While VPN installation is straightforward and convenient, it comes with a caveat: if a website detects your VPN usage, it may restrict your access and potentially suspend all associated accounts.
So how do websites detect you are using a VPN? Using a VPN or proxy will be the best choice when it comes to managing multiple accounts. Let’s find out in this blog post.
How do websites detect you are using a VPN?
Are you wondering how websites detect if you are using a VPN and which methods they employ? Here are five ways websites can easily identify VPN usage for IP address changes:
Blacklisting known VPN IP address
Every device connected to the Internet has an IP address. Websites maintain lists of known VPN server IP addresses. If your IP address falls within these ranges, it raises suspicion that you are using a VPN to access the website.
Additionally, since VPNs have numerous customers, they generate a high volume of data. Home IP addresses and even public free Wi-Fi generate much less data than a VPN server. If many customers are simultaneously using the same IP address, websites may infer that a VPN is the source of this traffic.
DNS leaks
Not only do devices connecting to the Internet have IP addresses, but websites also have their own IP addresses. Instead of entering the IP address of a website to access it, users can enter the DNS (Domain Name System) of the website.
Many VPNs use their DNS servers and have built-in protection to prevent requests from leaving the encrypted VPN tunnel. A DNS leak occurs when the user's DNS requests move outside the encrypted tunnel, making their browsing activity, including their IP address, location, and web searches, visible to their ISP.
Timezone mismatch
When users use a VPN to connect to websites in different geographic regions, a timezone mismatch can occur.
For instance, a user from the United States browsing a website may appear to be browsing from Vietnam due to the VPN server's location. This significant deviation raises suspicions that you are attempting to hide your IP address by using a VPN.
Timezone mismatches can be resolved by adjusting the timezone on your device. If you overlook the timezone setting, websites can easily discern that you are using a VPN.
Port blocking
Many VPNs use specific ports, and websites may perform port scanning to identify common VPN protocols or ports associated with VPN traffic. Detection of these protocols or ports can raise suspicions of VPN usage.
Browser geolocation
Browsers may be configured to disclose your location to websites. If your browser is set to do so, change the setting. If your browser reveals your actual location in opposition to your VPN's server, it signals to the website that you are using a VPN to change your IP address.