IPv6 Connection Check

Determine if your connection supports IPv6

UpdatesAdded IPv6 Connection Check tool to determine if your connection supports IPv6View Updates

Features

4-pattern judgment with one click

Color-coded display for both protocols, IPv6 only, IPv4 only, or unable to verify

IPv4 and IPv6 displayed side by side

Instantly identify when only one protocol is available

Provider name for each address

Confirm your connection switch is working by seeing the new provider

Check which protocol is prioritized

See which IPv4 or IPv6 method your browser actually uses

How to Use

Open and auto-check

Checking starts automatically upon opening, with results and address list displayed in seconds

Check status with verdict labels

Read the top label to see if IPv6 is available or if only IPv4 is supported

Copy addresses and providers

Use the copy button on each row to copy addresses or provider names to clipboard

Recheck after configuration changes

After changing router settings, use the "Recheck" button to refresh results

Use Cases

Verify after switching carriers

Confirm IPv6 is now enabled after switching to an IPoE-compatible carrier or provider

Compare router settings before and after

See connection changes before and after IPv6 configuration updates to assess impact

Inquire about connection issues

Provide your IPv4, IPv6 addresses, and provider name accurately to support

Compare IPv6 support across environments

Check IPv6 availability across home, office, and mobile connections

Knowledge Base

Why doesn't speed improve even with IPv6?

Even if IPv6 is available, sites that don't support IPv6 will still use IPv4. Speed also depends on network congestion and destination load, not just address type.

Difference between IPoE and PPPoE

IPoE and PPPoE are different connection methods for fiber optic internet. The visible IPv4/IPv6 address alone cannot determine which method you're contracted with.

PPPoE：PPPoE requires username and password authentication before communication starts, and can suffer congestion during peak hours.
IPoE：IPoE connects directly via IPv6 by skipping authentication, avoiding congested equipment, so speeds tend to stay stable even at night.

Where to check if IPv4 only is detected

If IPv4 only is detected, IPv6 may be disabled somewhere in the connection path. Check these 3 main areas.

Provider contract：Verify your provider contract includes IPv6 (IPoE) service and that signup is complete.
Router settings：Check if IPv6 features (IPv6 passthrough, IPoE connection settings, etc.) are enabled in your router's admin panel.
Device settings：If IPv6 is disabled in your device's network settings, you won't use IPv6 even if the line supports it.