Every tool, one place
67 tools in 10 groups, 65 ready to use now. Each one explains its answer in plain English and in technical detail.
Full reports
Start here when you want the whole picture. A report runs many tools together, ranks what is broken, and tells you what to fix first.
DNS records
DNS is the internet’s address book. These tools show what a domain’s records say right now and what each one does.
Look up records
4DNS health and propagation
Changed a record and waiting? These tools show who sees the new value, who still has the old one, and whether your nameservers are healthy.
Propagation
2Nameservers and DNSSEC
2Email authentication
Email authentication proves your messages really come from you. Get it right and you land in the inbox; get it wrong and you land in spam, or someone sends as you.
Core records
3Brand and transport
4Email delivery and reputation
When email bounces, goes missing or lands in spam, these tools trace where it goes and how receivers see you.
Mail servers
2Reputation
2Website and HTTP
Is it down, slow, insecure or misconfigured? These tools look at a website the way a browser and a search engine do.
Reachability and speed
6Security and stack
2Certificates and TLS
The padlock depends on a valid certificate and a modern TLS setup. These tools check both and warn you before anything expires.
Certificates
3Network and routing
When something is unreachable or slow, these tools show whether packets get there, how long they take and where they stop.
Reachability
4Path and MTU
4Domain and IP ownership
Who owns it, where is it, and how old is it? These tools read the official registries (RDAP and WHOIS) and IP data.
Domains
3IP addresses
4Converters and calculators
Small, fast helpers for everyday network maths and decoding. Most run instantly.