10 tools NET

Free Network Tools

Debug what actually happens on the wire: look up IPs, DNS records, and WHOIS data, inspect HTTP headers, replay HAR captures, test webhook delivery, and trace redirect chains. These tools surface the raw requests and responses so you can see exactly what passes between clients and servers.

Runs in browserNo signup requiredAI-enhanced

10 tools in this category

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IP Lookup

Look up geolocation, network, and security details for any IP address.

iplookupNET

DNS Lookup

Look up DNS records for any domain — A, AAAA, MX, TXT, NS, SOA, SRV, CAA, and more.

dnslookupNET
LocalAI

HTTP Headers Analyzer

Analyze HTTP response headers for security, caching, and compliance issues.

securitynetworkNET
AI

API Request Builder

Build and test HTTP API requests with headers, body, auth, and response visualization.

apihttpNET
LocalAI

HAR Analyzer & Request Replay

Analyze HAR files, inspect slow/failed requests, generate replayable curl/fetch code.

networkperformanceNET
Local

HAR to Postman Collection Converter

Convert HAR files to Postman Collection v2.1 JSON for API testing.

harpostmanNET

Webhook Tester

Generate a unique URL, capture webhook requests, inspect headers & body, and replay them.

webhookhttpNET

Redirect Checker

Trace URL redirect chains and detect 301, 302, 307, and 308 redirects.

redirecturlNET

Domain WHOIS

Look up domain registration info — registrar, dates, name servers, and status.

whoisdomainNET

IP to Hostname

Reverse DNS lookup — find hostnames associated with an IP address.

reverse dnsptrNET

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Frequently Asked Questions

Are the network tools free?+

Yes, all network tools are free to use. Lookups that reach the public internet use public records, and nothing is stored per query.

Does the DNS or IP lookup expose my request to a server?+

Tools that must reach the public internet — IP, DNS, WHOIS — query only the record you ask for from standard public infrastructure.

What can a HAR analyzer tell me?+

Upload a HAR capture and inspect every request, header, timing, and status code — useful for reproducing slow or failing API flows without opening DevTools.

Can I test a webhook locally?+

Yes, the webhook tester exposes a unique URL and shows each request as it arrives, with headers, payload, and timing, so you can verify your integration end-to-end.