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33 Free Tools

Network Tools

Every network tool on Online Tool Store, in one place. Runs entirely in your browser — nothing is ever uploaded.

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Latency Jitter Estimator

Quick, free Latency Jitter Estimator in your browser

Subnet Mask Cheat Sheet

Quick, free Subnet Mask Cheat Sheet in your browser

Binary to IP Converter

Convert IPv4 between binary and dotted decimal

Traceroute Online

Preview network route checks

Whats My IP

View your IP and connection details

Network Ping

Ping test online: latency, jitter & packet loss

IP Subnet Calculator

Calculate IPv4 networks, ranges, and host capacity

ASN Lookup

Look up the network behind an ASN or IP address

Open Port Checker

Check whether TCP ports on a host are open

MX Lookup

Preview a domain's mail server records

IP To Hostname

Reverse-DNS lookup for any IPv4 address

Website Status Checker

Preview a website status report layout

Hostname To IP

Resolve a hostname to its IPv4 and IPv6 addresses

DNS Propagation Check

DNS propagation table demo for example.com

Subdomain Finder

Generate a candidate subdomain wordlist

HTTP Methods Auditor

Check which HTTP methods an API allows

DNS Record Generator

DNS record generator for A, MX, TXT, SPF & CAA

Wi-Fi Signal Interpreter

Wi-Fi RSSI: quality, SNR, and VoIP margin

CNAME Chain Checker

Trace a CNAME chain to its final record

Wake-on-LAN Packet Builder

Build a magic packet for a MAC address

DNS TTL Planner

Plan TTL changes for a safe DNS migration

IP Allocation Planner

Plan subnet allocation across a network block

Common Port Reference

Look up frequently used ports

DNS Lookup

Look up a domain's DNS record types

Wi-Fi Channel Planner

Plan non-overlapping Wi-Fi channels for your APs

Download Time Calculator

Estimate download time from file size and speed

WireGuard Config Generator

Generate WireGuard VPN configuration files

Zone File Validator

Check DNS zone file syntax for errors

Private IP Range Checker

Check whether an IP address falls in a private/reserved range

PTR Record Generator

Generate reverse DNS records

VLSM Subnet Planner

Plan variable-length subnets

Bandwidth Requirement Calculator

Estimate network capacity needs

WebSocket vs Polling Comparator

Get a recommendation between WebSocket and polling for your use case