Network Tests

Organize network tests by the question they answer.

RouterWiz should not present network tests as a random toolbox. Each test belongs to a layer: local device, router, WAN path, public reachability, ISP, DNS, or web response.

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Public IP Check

Use first for WAN reachability, DDNS, CGNAT suspicion, and router WAN comparison.

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IP Lookup

Read registry, ASN, and provider context behind a public IP before deeper WAN assumptions.

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IP Location

Read country, city, timezone, and provider context behind a public IP.

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DDNS Hostname Checker

Compare your current public IP with the DDNS hostname answer and public resolver propagation.

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Port Reachability Test

Check whether a TCP port appears open and move straight into troubleshooting if it does not.

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Public Service Check

Resolve a public host, test the TCP port, and confirm whether HTTP or HTTPS responds.

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DNS Lookup

Resolve A, AAAA, or CNAME records when remote access depends on a hostname.

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DNS Propagation

Compare resolver answers side by side before concluding DDNS is still stale.

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Reverse DNS

Read PTR information for a public IP when you need WAN-side naming context.

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HTTP Headers

Inspect headers, redirects, and public response behavior for websites and home servers.

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SSL Check

Inspect certificate validity, issuer, and TLS protocol details.

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NAT Path Checker

Compare the public IP with the router WAN IP before blaming port rules alone.

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NAT Type Checker

Combine browser NAT probe signals, WAN clues, and an optional port check.

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Ping

Use ICMP reachability as a quick path clue before deeper checks.

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Traceroute

Read early path hops when you need more context than a single ping.

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Router and gateway checks

  • Router Login Helper
  • Default gateway finder flow
  • Router WAN IP comparison with public IP
  • Double NAT and CGNAT hints from the WAN side
  • Browser-based NAT type estimate

Public reachability checks

  • What Is My IP
  • Port Checker
  • HTTP and HTTPS reachability clues from headers and TLS

Name resolution checks

  • DNS Lookup
  • DNS Propagation
  • Reverse DNS
  • DDNS hostname validation
  • Propagation checks across public resolvers

Path and latency checks

  • Ping
  • Traceroute
  • Packet loss and ISP path guidance
  • Lightweight server-side execution with public-target guardrails

Local diagnostics via agent

  • Local listener test
  • Firewall rule check
  • Double NAT suspicion
  • CGNAT suspicion