Verify SHA256 checksums
After downloading an ISO, compare its SHA256 checksum with the checksum published by the official Linux distribution. On Linux you can usually run sha256sum file.iso.
๐งฐ Online Tools
Online tools for network diagnostics, DNS checks, security validation and quick utilities for administrators, technicians and advanced users.
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Network and IP
5 tools
IP
Approximate IP location
Look up approximate network location; open the result on an external map.
IP
My IP
What is my public IP? Complete connection information.
Network
Ping / traceroute instructions
Prepare commands to run on your computer. No simulated measurements.
IPv6
IPv6 DNS records
Query AAAA records. This is not a connectivity test.
Subnet
Network Calculator
Calculate subnets, hosts, IP ranges and network masks.
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DNS and Domains
5 tools
Whois
Domain registration (RDAP)
Prepare a domain and open the official ICANN Lookup service.
DNS
DNS records
Query record types using Google Public DNS.
DNS
DNS snapshot
View a single-resolver snapshot, not worldwide propagation.
ASN
IP network / ASN
Look up the network associated with a public IP address.
Reverse
Reverse DNS (PTR)
Look up PTR records for public IPv4 or IPv6 addresses.
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Security and Validation
4 tools
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Utilities
4 tools
Test
Speed Test
Test your Internet connection speed.
QR
QR Code Generator
Genera cรณdigos QR para cualquier URL o texto. Descarga o comparte el cรณdigo.
Password
Password Generator
Generate secure, customizable passwords with a strength indicator.
SHA-256
ISO Checksum Verifier
Calculate and compare the SHA-256 hash of a Linux ISO without uploading it.
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Statistics
1 tool
Linux ISO help
Quick guides for downloading, verifying and installing Linux ISO images safely. These notes help beginners choose the right image and avoid common installation mistakes.
Create a bootable USB
Use a trusted USB writer such as Ventoy, Rufus, balenaEtcher or Fedora Media Writer. Always select the downloaded ISO and verify that the target USB drive is correct.
ISO vs torrent vs netinstall
An ISO is the standard installer image. A torrent can be faster and easier to resume. A netinstall image is smaller, but downloads packages during installation.
UEFI, BIOS and architecture
Most modern PCs use UEFI and 64-bit images. The labels x86_64 and amd64 usually mean the same 64-bit PC architecture.