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To check whether your internet connection supports IPv6, open test-ipv6.com in your browser and run its simple test. It checks whether this browser, on its current network path, can reach IPv6 test endpoints. A pass is useful evidence of IPv6 connectivity—not proof that every device, app, or network setting is ready to stop using IPv4.
How to check IPv6 in 10 seconds
- Open test-ipv6.com in a browser with JavaScript enabled. The site says JavaScript and cross-site scripts are needed for the full test.
- Run the simple test and note whether the result shows IPv4 only, IPv4 plus IPv6, or IPv6.
- Interpret the result as a check of this browser and connection path—not every device using the same Wi-Fi.
- If the simple test suggests a problem, run the detailed test to inspect IPv4-only, IPv6-only, and dual-stack access, large-packet handling, and whether the ISP resolver can reach IPv6-only authoritative DNS.
test-ipv6.com describes its approach this way: “The combination of successes and failures tells a story about how ready you are for when publishers start offering their web sites on IPv6.” That is the site’s description of what its checks indicate, not an independent certification of network readiness.
What the result tells you
IPv4 works, but IPv6 does not
The tested browser reached IPv4 endpoints but did not demonstrate IPv6 connectivity. That result alone cannot identify the cause: it could involve the ISP, router, device, VPN, DNS, or filtering configuration. The test is not a diagnosis of which component is responsible.
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This is a dual-stack result: the tested path can reach services over both protocol families. RFC 6586 defines dual-stack as full support for IPv4 and IPv6 in hosts and routers. For everyday use, that is useful IPv6 capability while retaining IPv4 compatibility; it does not establish that all devices and applications on the network have the same support.
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IPv6 works, but a detailed check fails
Read the name of the failed check rather than treating every failure as an IPv6 outage. Reachability, large-packet handling, and resolver behavior are separate checks. test-ipv6.com describes its ISP-resolver check as bonus information, not a requirement for reaching IPv6 websites today.
Why ordinary browsing can hide an IPv6 problem
On dual-stack hosts, clients may use Happy Eyeballs to try address-family connections in parallel and reduce user-visible delay. RFC 8305, a December 2017 IETF Standards Track document, says parallel attempts can help clients connect more quickly when particular addresses or address families are blocked, broken, or sub-optimal. A working fallback can therefore make browsing seem normal even when the IPv6 path has a problem; a direct test can reveal the difference.
Rank #2
- 𝐆𝐢𝐠𝐚𝐛𝐢𝐭 𝐖𝐢𝐅𝐢 𝐟𝐨𝐫 𝟖𝐊 𝐒𝐭𝐫𝐞𝐚𝐦𝐢𝐧𝐠 – Up to 5400 Mbps WiFi for faster browsing, streaming, gaming and downloading, all at the same time. Performance varies by conditions, distance to devices, & obstacles such as walls.
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- 𝐂𝐨𝐧𝐧𝐞𝐜𝐭 𝐌𝐨𝐫𝐞 𝐃𝐞𝐯𝐢𝐜𝐞𝐬 – Supports MU-MIMO and OFDMA to reduce congestion and 4X the average throughput
- 𝐄𝐱𝐭𝐞𝐧𝐬𝐢𝐯𝐞 𝐂𝐨𝐯𝐞𝐫𝐚𝐠𝐞 - Covers up to 2,000 sq. ft. High-Power FEM, 6× Antennas, Beamforming, and 4T4R structures combine to adapt WiFi coverage to perfectly fit your home and concentrate signal strength towards your devices.
- 𝐌𝐨𝐫𝐞 𝐕𝐞𝐧𝐭𝐬, 𝐋𝐞𝐬𝐬 𝐇𝐞𝐚𝐭 – Improved vented areas help unleash the full power of the router
What a pass does not certify
An IPv6 reachability pass is not proof that a network can safely turn off IPv4. Applications may lack IPv6 support, and bugs can remain in code that has not been exercised over IPv6. RFC 6586 documented such practical issues in April 2012 and recommended dual-stack for general-purpose networking at that time, while describing IPv6-only use as suitable for early adopters or highly controlled networks. That is a dated recommendation, not a universal rule for every modern deployment.
What to do if IPv6 fails
- Repeat the test on another device or network path before changing router settings. This helps determine whether the result is limited to the original browser or connection, though it does not by itself identify the cause.
- Run the detailed test and note which specific checks fail. A failure for IPv6-only endpoints differs from a large-packet or resolver check.
- If the same IPv6 reachability issue persists across devices on your connection, contact your ISP and share the test result. The browser check cannot establish whether the provider or your local equipment is responsible.
Household checks and network-operator measurements answer different questions
A browser test is for the path used by an individual visitor. RIPE NCC’s RIPEness framework is an operator-facing view for participating organizations: it tracks IPv6 resources, routing visibility, route6 and reverse DNS configuration, plus a measured use indicator. RIPE NCC describes RIPEness as a prototype and best-effort service, not a consumer test of a household connection.
Rank #3
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- Covers up to 1,000 sq. ft. with four external antennas for stable wireless connections and optimal coverage.
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Adoption percentages also depend on what is measured. Google’s IPv6 statistics describe the percentage of Google users accessing Google over IPv6, not all networks or all internet traffic. A search snapshot dated September 5, 2026 reported 50.30%; Google’s page is dynamic, so the value should be treated as date-specific. Separately, RFC 9386, published in 2023, estimated IPv6-capable users at 29.5% as of January 2022. That historical estimate uses a different population and method, so it is not directly comparable to Google’s user-access figure.
Quick Recap
Rank #4
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- 𝐎𝐮𝐫 𝐜𝐲𝐛𝐞𝐫𝐬𝐞𝐜𝐮𝐫𝐢𝐭𝐲 𝐜𝐨𝐦𝐦𝐢𝐭𝐦𝐞𝐧𝐭 - TP-Link is a signatory of the U.S. Cybersecurity and Infrastructure Security Agency’s (CISA) Secure-by-Design pledge. Advanced security is integrated into the device’s design, development, and ongoing maintenance.
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