Internet & network utilities

Zerolink Tools Hub

Practical browser-based utilities for internet users, businesses, installers and IT teams.

Browse toolsStart Internet Speed Test
12 focused utilitiesNo software installationMobile-friendly tools
What Is My IP AddressFind your public IP, IP location data and IPv4/IPv6 details.Look up IP →
Check IP Blacklist StatusCheck IPv4 reputation across public spam and security DNS blocklists.Check blacklist status →
IP Ping and ReachabilityPing, traceroute and reverse DNS tests for public IPs and domains.Run network test →
Port CheckerCheck whether TCP ports are open, closed or filtered on public targets.Check ports →
Bandwidth Converter and Usage EstimatorConvert speed units, estimate transfer time and plan streaming, work or CCTV data usage.Calculate bandwidth →
Internet & WiFi Speed TestRun animated browser-based internet speed tests with ping, download and upload results.Start Speed Test →

All Tools by Category

IP Utilities

What Is My IP AddressFind your public IP, IP location data and IPv4/IPv6 details.Look up IP →
Check IP Blacklist StatusCheck IPv4 reputation across public spam and security DNS blocklists.Check blacklist status →
IP Location Tracker MapTrack IP geolocation with country, city, ISP and live map pin.Track IP →
IP Ping and ReachabilityPing, traceroute and reverse DNS tests for public IPs and domains.Run network test →
Port CheckerCheck whether TCP ports are open, closed or filtered on public targets.Check ports →

Network Diagnostics

DNS Lookup ToolLookup A/AAAA/MX/NS/TXT/CNAME records quickly.Look up DNS →
Bandwidth Converter and Usage EstimatorConvert speed units, estimate transfer time and plan streaming, work or CCTV data usage.Calculate bandwidth →
Internet & WiFi Speed TestRun animated browser-based internet speed tests with ping, download and upload results.Start Speed Test →
Network Diagnostics SuiteDNS lookup, ping, traceroute, reverse DNS, RDAP and IP troubleshooting tools.Run diagnostics →

Web and SEO

Website Speed and Structure AuditCheck server response timing, HTML structure, metadata and technical SEO signals.Run website audit →
SEO Metadata GeneratorGenerate title, description, canonical, social metadata and FAQ structured-data starters.Generate SEO pack →

Deployment Guides

Router Login and Setup GuideFind common router login addresses and follow secure Wi-Fi, WAN and troubleshooting guidance.Show router guide →
CCTV and IP Camera GuideEstimate CCTV storage and PoE capacity, generate RTSP formats and review secure camera setup guidance.Calculate CCTV storage →
Suggest an ImprovementReport an issue or request a utility

Share tool issues, feature requests, or device models to add. Email is required for follow-up.

Your email is used only to follow up on this feedback and is never shown publicly. See our Privacy Policy. Privacy Policy

Recent Community Feedback

No feedback yet. Be the first to suggest a tool enhancement.