Free online network tools

IP blacklist check, whois lookup, dns lookup, ping, and more!

IP & Location

IP lookup

Country, ISP, location

My IP address

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View info about your IP

Who is hosting?

Find the hosting provider behind a site

Domain & DNS

Whois lookup

Domain registration details

DiG DNS lookup

Run a DNS lookup (A, MX, TXT...)

DNS health check

Full DNS diagnostic report

Tenant ID lookup

Find Microsoft/Azure AD Tenant ID

Reverse DNS lookup

Find hostname for an IP

Subnet calculator

Calculate IPv4/IPv6 network details

Security & Reputation

Blacklist check

Check against DNSBL lists

Domain trust report

Full security scan: SPF, SSL, DNS, ports

SSL certificate check

View SSL certificate details

Latest exploits

Newest published entries from Exploit-DB

Virus & URL scan

Scan a file or link with 70+ antivirus engines

Network Diagnostics

Ping

Response time and packet loss

Traceroute

See the network path to a host

Quick port scan

25 common ports at once

Custom port scan

Check one specific port

Speed test

Start test Ping, download, upload

Service health

Live status for Microsoft, Google, AWS, Cloudflare & more