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Networking

Browse our free collection of networking. All tools run locally in your browser for maximum privacy.

2 Tools

Networking tools help developers diagnose connectivity issues, inspect HTTP traffic, calculate subnets, and test API endpoints. These tools cover the infrastructure layer, from DNS lookups and IP analysis to webhook inspection and speed testing.

Common Workflows & Recommended Tools

01

Look up DNS records for a domain to debug routing

→ DNS Lookup
02

Calculate subnet ranges and usable IPs for a CIDR block

→ Subnet Calculator
03

Inspect incoming webhook payloads in real time

→ Webhook Inspector
04

Generate a curl command for an API endpoint

→ Curl Generator
05

Expand a shortened URL to check the destination

→ URL Expander

Common Mistakes to Avoid

  • ✗Trusting WHOIS data for ownership verification, WHOIS records can be privacy-protected or outdated.
  • ✗Calculating subnets without accounting for reserved addresses (network and broadcast addresses), usable host count is always 2 less than the raw calculation.
  • ✗Testing webhooks only with happy-path payloads, always test with malformed data, duplicate deliveries, and delayed retries.
  • ✗Using URL expanders to check shortened links from unknown sources, the expansion request itself reveals your IP to the shortener service.

Privacy-First by Design

Network tools query public DNS and HTTP endpoints. Your IP address is visible to the servers you query, but no additional data is collected by AllDevToolsHub.

Frequently Asked Questions

Do networking tools expose my IP address?

DNS lookups and URL expansion make requests through your browser, so the target server sees your IP. AllDevToolsHub does not log or collect this information.

Can I test webhooks to localhost?

Yes. The Webhook Inspector can receive payloads on any URL you configure, including localhost addresses for local development.

How accurate is the subnet calculator?

The calculator follows RFC 4632 (CIDR) exactly. It correctly identifies network address, broadcast address, first/last usable host, and total host count for any valid IPv4 CIDR block.