What network tools are available?

DNS lookup, WHOIS lookup, IP geolocation, ping test, SSL certificate checker, port scanner, and network latency tester.

What is a DNS lookup?

Queries DNS records for a domain: A, AAAA, MX, TXT, CNAME, and NS records.

What is IP geolocation?

Maps an IP address to country, region, city, ISP, ASN, and VPN/proxy detection.

Yes, completely free. One of 46 free tools at jasperbernaers.com.

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What Is My IP Address?_

Your public IPv4 and IPv6 addresses, location, ISP, and network details — detected instantly in your browser.

Public IPv4 Address

detecting…

Your public IPv4 · —

Country

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City / Region

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ISP / Org

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ASN

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Timezone

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Coordinates

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Postal Code

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Network

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IPv6 Address

detecting…

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Copy Your IP

Internet Speed Test

Measure your real download speed, upload speed, and latency directly in your browser — no plugins required.

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Ping / Latency

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⬇

Download

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Mbps

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Upload

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Mbps

Press Run to start the speed test.

Connection Info

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Downlink Estimate

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RTT Estimate

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Save Data Mode

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Browser & Device Info

Full details about your browser, operating system, screen, hardware, and supported web capabilities.

Browser & OS

Browser

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Version

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Engine

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Operating System

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Device Type

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Language

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Screen & Window

Screen Resolution

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Window Size

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Color Depth

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Pixel Ratio

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Touch Points

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Orientation

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Hardware

CPU Threads

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Device Memory

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Platform

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Do Not Track

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Web Capabilities

Raw User-Agent

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DNS Record Lookup

Look up DNS records (A, AAAA, MX, CNAME, TXT, NS, SOA) for any domain using Google's public DNS-over-HTTPS API.

Enter a domain name and click Lookup

Quick Lookups

IP Address Lookup

Find the location, ISP, and network details of any IPv4 or IPv6 address.

Enter an IP address or domain to look up

Quick Lookups

Encode, Decode & Hash

Base64, URL encoding/decoding, SHA hashes (1/256/384/512), and JWT decoder — all computed locally in your browser.

Base64 Encode / Decode

Input

Output (encoded)

URL Encode / Decode

Input

Output (encoded)

SHA Hash Generator

Input text

Type something above to generate hashes

JWT Decoder

JWT Token

Paste a JWT token above to decode it

Frequently Asked Questions — Network Tools

What is my IP address and how can I find it quickly and securely?

Your IP address is a unique identifier assigned to your device on the internet, functioning like a postal address for data transmission. This network tool instantly displays both your public IP address (how servers see you from across the internet) and your local network information (how devices on your home/office network identify you). Understanding your IP is useful for troubleshooting connectivity issues, configuring remote access, setting up port forwarding, security monitoring, and understanding your internet identity. The tool provides this information instantly without storing your data or requiring registration.

How do I run a free speed test online and what specific metrics does it measure?

A free speed test measures your internet connection's download speed (how fast data flows to you), upload speed (how fast you send data), and latency or ping (the delay in communication). This online speed test helps identify connection bottlenecks, verify your ISP's advertised speeds against actual performance, troubleshoot slow networks, and understand connection quality for specific applications like video streaming, gaming, or video conferencing. Results appear instantly with no software installation required.

What is DNS lookup and how do I test my DNS configuration?

DNS lookup is the process of translating human-readable domain names (like google.com or jasperbernaers.com) into numerical IP addresses that computers understand. This network tool online provides comprehensive DNS lookup results, displaying A records (domain IP), MX records (email routing), NS records (nameservers), CNAME records (aliases), and TXT records (text data). Essential for diagnosing domain routing problems, email delivery failures, SSL certificate issues, and understanding your domain's DNS configuration.

Can I check my network speed without downloading software or installing apps?

Yes, completely browser-based. This online speed test requires zero installation or plugins—just open in your browser and run unlimited tests from any device. No software cluttering your system, no version updates, no compatibility issues. Run speed tests whenever you want to monitor connection performance, identify peak usage times, or troubleshoot ISP-related issues.

What other network diagnostic tools are included besides IP lookup and speed test?

This comprehensive network tools online suite includes multiple diagnostic utilities: IP address lookup with geolocation, free speed testing, DNS lookup and analysis, ping testing for latency measurement, traceroute analysis for route visualization, port checking for accessibility verification, and whois lookup for domain ownership information. All essential network diagnostics for IT professionals, system administrators, developers, and anyone troubleshooting connectivity or security issues combined in one platform.

How accurate and reliable is the free speed test provided on this site?

The speed test uses industry-standard measurement protocols and methodologies to ensure accuracy comparable to major speed testing services. Real-time metrics show your actual connection performance for downloads, uploads, and latency. Note that Wi-Fi connections may show higher variability than wired ethernet connections. For most consistent results, use wired connections and close other applications during testing.

Can I use this IP lookup tool to investigate or research unknown IP addresses?

Yes, the IP lookup function provides geolocation information, ISP identification, organization details, and technical specifications for any public IP address. Useful for website analytics, understanding incoming traffic, security monitoring, fraud investigation, and understanding which services are connecting to your systems or networks.

Is this tool free?

Yes, completely free. One of 52 free tools at jasperbernaers.com.

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