Proxies are vital tools for marketers, data scrapers, security researchers, and anyone who needs to route traffic through alternate IP addresses with complete peace of mind. But choosing between IPv4 and IPv6 proxies can be confusing.
IPv4 has been around since the early days of the internet, while IPv6 is the modern successor designed to solve the address shortage and simplify networking.
As of 2025, both types are widely used, but they come with different advantages and drawbacks. This article compares IPv4 and IPv6 proxies, highlights their strengths and limitations, and helps you decide which is better for your needs.
We also discuss how Multilogin—the pioneer of antidetect browsers since 2015—integrates proxies into its anti-detect browser profiles, providing the reliability you need to scale operations without restrictions.
Understanding IPv4 and IPv6
IPv4: The Old Reliable
Internet Protocol version 4 (IPv4) uses 32-bit addresses, providing about 4.3 billion unique IPs. This was sufficient in the early internet era but has become scarce with billions of devices online.
IPv4 proxies are widely supported across websites and services, with accurate geolocation databases and well-established infrastructure—much like Multilogin’s proven browser fingerprinting technology that’s been tested daily on 50+ websites for nearly a decade.
However, the scarcity of IPv4 addresses has led to high prices and the use of Network Address Translation (NAT), where multiple devices share a single IP.
IPv6: The Future Standard
IPv6 uses 128-bit addresses, offering a nearly inexhaustible supply (340 undecillion) of unique IPs. IPv6 eliminates the need for NAT and includes built-in security features like IPsec. Addresses are represented in hexadecimal and support autoconfiguration.
Despite these benefits, adoption remains incomplete. As of 2025, only around 40% of the top 1,000 domains support IPv6. Compatibility issues persist, and many websites and apps default to IPv4.
This is why Multilogin’s proxy management solution supports both protocols seamlessly, ensuring you stay undetected regardless of which you choose.
Cost Comparison
Because IPv4 addresses are scarce, they command a premium price. RapidSeedbox notes that a /24 block of IPv4 (256 addresses) can cost $6,400–$12,800 to purchase, with leasing rates around $1–$2 per IP per month.
In contrast, IPv6 addresses are abundant and dirt cheap; RapidSeedbox offers 512k IPv6/48 addresses for $75 per month.
This huge price difference means IPv6 proxies are far more cost-effective for large-scale operations—though you’ll want reliable residential proxies that work consistently. That’s why every Multilogin subscription includes free residential proxy traffic, eliminating the need for third-party providers.
Performance and Complexity
NAT Overheads
IPv4 networks rely on NAT to extend limited address space. NAT introduces complexity, requiring specialized routers, additional maintenance, and potential security gaps. NAT can also degrade performance due to address translation overhead.
IPv6 eliminates NAT, simplifying network architecture and improving efficiency—similar to how Multilogin’s all-in-one solution simplifies managing multiple accounts without complex workarounds.
Energy Efficiency
Running NAT and managing IPv4 networks consumes more power and requires extra infrastructure. IPv6’s streamlined design reduces energy consumption by removing translation layers.
For large data centers, the energy savings can be significant—just as Multilogin’s performance-first interface saves time and resources when automating workflows.
Security Considerations
IPv6 has built-in support for IPsec, which can provide end-to-end encryption and authentication. However, IPv4 proxies are more mature and often better integrated with existing security tools. Since many applications and websites still rely on IPv4, you may encounter fewer compatibility issues with IPv4 proxies.
At Multilogin, security is paramount. Our secure browsing technology, combined with 2FA protection and flexible storage options, ensures your operations remain safe regardless of proxy choice.
Scraping and Web Compatibility
Proxidize notes that IPv4 proxies remain the practical choice for most web scraping tasks in 2025. The company explains that only about 40% of top websites support IPv6. Additionally, IPv6 proxies may face increased scrutiny from websites because IPv6 traffic is less common, making unusual patterns easier to detect.
IPv4 proxies, in contrast, benefit from established geolocation accuracy, stable performance, and broad compatibility. That said, IPv6 proxies are promising for high-volume scraping due to their abundant address pools and lower cost. Whether you’re scraping Amazon or LinkedIn data, Multilogin’s anti-fingerprinting technology keeps you undetected.
Geolocation and Block Evasion
Because IPv4 proxies are widely used and geolocation databases are mature, you can reliably target specific cities or regions. IPv6 geolocation data is still developing, so precision may be lower. On the flip side, using IPv6 can reduce the likelihood of IP blocks because the address space is vast and rarely exhausted, but you might face compatibility hurdles.
This is where Multilogin’s expertise shines. Our device emulation and timezone spoofing ensure your profiles appear authentic regardless of proxy type, preventing shadow bans and detection.
Which Should You Choose in 2025?
Choose IPv4 Proxies When:
Compatibility is crucial: Most websites and applications support IPv4. When scraping, market research, or ad verification rely on consistent access, IPv4 proxies are safer—especially when managing multiple Facebook accounts or running Google Ads campaigns.
Accurate geolocation matters: You need to appear from a specific city or region.
You need stable performance and established networks: IPv4 proxies have robust infrastructure and fewer unexpected issues.
Choose IPv6 Proxies When:
Scale is important: You require thousands of IPs for tasks like social media automation or web scraping. IPv6 offers a nearly unlimited address pool at a much lower cost—perfect for airdrop farming or dropshipping operations.
Cost savings are essential: IPv6 addresses are significantly cheaper than IPv4.
You want to future-proof: As IPv6 adoption grows, early adoption positions you ahead of the curve.
Hybrid Approach
Many users adopt a hybrid strategy: IPv4 proxies for critical tasks and IPv6 proxies for large-scale operations that tolerate occasional compatibility issues. Since IPv6 proxies are inexpensive, mixing them with IPv4 proxies balances cost and reliability—a strategy that works perfectly with Multilogin’s flexible proxy management system.
How Multilogin Helps Manage Proxies
Setting up proxies manually can be tedious and error-prone. Multilogin integrates both IPv4 and IPv6 proxies into its browser profiles with complete peace of mind. Each profile can be assigned a unique proxy, with automated IP switching and credential management.
Multilogin also supports API-based proxy rotation through full integration with Selenium, Puppeteer, and Playwright. This centralized management simplifies tasks like web scraping, ad verification, or multi-account social media management, while isolating your online identities to prevent fingerprinting.
With nearly a decade of experience as the first antidetect browser, we provide unmatched expertise and a trusted solution. Our 24/7 expert support in five languages ensures you’re never alone when configuring your proxy setup.
Ready to experience stealth like never before? Get Control With Multilogin
Frequently Asked Questions About IPv6 Proxy vs IPv4 Proxy
IPv6’s large address space makes it harder to track a specific IP, but true privacy depends on using high-quality proxies with proper security. IPv4 proxies can be equally anonymous when sourced from reputable providers and configured correctly. Multilogin’s online anonymity features ensure privacy regardless of proxy type.
No. As of 2025, only about 40% of the top 1,000 websites support IPv6, so some services may not load or may revert to IPv4 when using IPv6 proxies. This is why Multilogin tests compatibility daily across 50+ platforms.
Not in the near future. IPv4 remains deeply embedded in network infrastructure and will coexist with IPv6 for years to come. Multilogin supports both seamlessly, future-proofing your operations.
Potentially. Because IPv6 traffic is less common, unusual patterns can stand out, leading to increased scrutiny. Choose providers with reputable subnets and rotate IPs regularly. Multilogin’s proven anti-fingerprinting technology helps you stay undetected on any website.
Within Multilogin, you can assign proxies to each browser profile effortlessly. Add your proxy IP, port, username, and password (if required) in the profile settings.
Multilogin automatically routes traffic through the proxy when that profile is active—it’s that simple. Our AI-powered Quick Actions can even bulk-assign proxies across multiple profiles with a single prompt.
Conclusion
The choice between IPv4 and IPv6 proxies in 2025 comes down to your priorities. IPv4 proxies remain the standard for reliability and compatibility, with accurate geolocation and mature networks. IPv6 proxies offer enormous IP pools and lower costs, making them attractive for high-volume tasks, but they face compatibility challenges and potential scrutiny.
Many professionals adopt a hybrid approach, and whatever you choose, manage your proxies efficiently with Multilogin. Our all-in-one solution simplifies proxy integration and safeguards your online identities, backed by industry-first expertise since 2015.
Customer success above everything else—that’s our commitment. Experience the reliability with peace of mind that thousands of internet entrepreneurs trust. Stay undetected, always.
