Tool
DDNS Hostname Checker
Check whether a DDNS hostname points back to the public IP of your current network. This combines your live public IP, direct DNS answers, and public resolver propagation in one view.
DDNS
DDNS Hostname Checker
Use this when a DDNS hostname should point back to your current network. RouterWiz compares your current public IP with direct DNS answers and public resolver propagation.
API endpoint
External services can call POST /api/tools/ddns-match with a hostname and record type to compare the current public IP path with direct DNS answers and public resolver propagation.
curl -X POST https://routerwiz.com/api/tools/ddns-match \
-H "Content-Type: application/json" \
-d '{
"hostname": "example.ddns.net",
"recordType": "A"
}'See the flow visually
DDNS is only useful when the hostname follows your WAN IP
A hostname can look correct in one resolver and stale in another. RouterWiz compares your current public IP with both the direct answer and public resolver propagation before you spend more time on router rules.
- Run this first when remote access depends on a hostname instead of a raw IP.
- If the hostname already matches, move next into Port Checker or NAT Path Checker.
- If the hostname does not match, fix DDNS updates before tuning port forwarding again.