关于 IP 网络检查

比较当前浏览器的 IPv4 与 IPv6 连通性

This is a browser connectivity snapshot, not an identity or performance guarantee. VPNs, proxies, firewalls, privacy extensions, mobile networks, and transient routing changes can affect one family without affecting the other.

如何使用这个开发者工具

Open the tool and wait for the IPv4 and IPv6 probes to complete independently.
Compare the two cards to see which family returned a valid public address and which family is unavailable or unsupported.
Refresh when you change networks, VPN settings, proxy settings, or browser privacy controls.
Use the result with local router, operating-system, DNS, and application logs when diagnosing a dual-stack issue.

隐私与数据处理

The probes connect directly from this browser to the configured IPv4 and IPv6 detection endpoints. The returned public addresses are displayed for this session and are not sent to this site's lookup endpoint by this tool. Detection providers may process requests under their own policies.

常见问题

Does IPv6 unavailable mean the internet is down?

No. Many networks still use IPv4 only, and a successful IPv4 result can provide normal access. It means this browser did not complete the configured IPv6 probe.

Why do the two IP addresses differ?

IPv4 and IPv6 can use different providers, VPN paths, egress points, or geolocation records. The difference is expected on many networks.

Does this tool measure speed?

No. It checks whether each address family can reach its detection endpoint and returns an address. It is not a bandwidth, latency, or quality-of-service test.

IP 网络检查