IPv6 Connection Check
Determine if your connection supports IPv6
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.
Safety and Privacy
Server-side processing
Input is processed on the server; only information necessary for the inquiry is sent.
Temporary processing only
For Obtain provider name, temporary processing occurs on the server, then data is discarded after results are returned.
Communications encrypted with HTTPS
All sent and received data is encrypted by TLS and cannot be read by third parties.
No transmission to third parties
Input content is not sent to external services such as ad networks or trackers.
IP check service and location API only
Connects to external IP check services for address verification, and sends only the IP address to external APIs for provider lookup
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Updates
- update #279
Added IPv6 Connection Check tool to determine if your connection supports IPv6
Featured Tools
RAKKOTOOLS is free to use!
Available free of charge for individuals and corporations, commercial and non-commercial use alike.No prior permission or usage application is required. Feel free to use it in various situations.
Use in streaming and videos
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Use in schools, work, and events
Can be used in various situations such as classes, team division, internal work, and events.
Introduction on Web, books, and SNS
Feel free to introduce it as a useful tool on web media, books, SNS, and other platforms.
Commercial use
Can be used for commercial purposes such as research, calculation, processing, and conversion in business and production.
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If using in streaming and videos
Link to RAKKOTOOLS in the description, or Mention or display that you are using RAKKOTOOLS in the stream or video.
Credit example for the description
Usage guidelinesYou are free to use it for normal purposes. However, use for purposes that violate laws, infringe on third-party rights, impose significant load on the service, or otherwise interfere with service operation is prohibited.
We do not guarantee the accuracy or completeness of information and calculation results obtained from each tool.
This notice is a translation of the original Japanese text. If there is any discrepancy between the translation and the original, the Japanese original takes precedence.