Network and DNS tools
DNS, MX and NS lookups, WHOIS, reverse DNS, your IP, HTTP headers, redirect chains and an API tester. The only tools here that use a server, and they say so.
- API Tester Compose an HTTP request, send it, and read the status, headers and pretty-printed body without installing anything.
- DNS Lookup See the live DNS records of a domain, every common type at once or one type at a time, with the TTL of each answer.
- Hostname to IP Forward DNS for a list of hostnames: each name in, its IPv4 and IPv6 addresses out.
- HTTP Header Checker Send a request to a URL and read back the status, timing, every response header and which security headers are missing.
- IP to Hostname Reverse DNS: enter IP addresses and get the hostnames their PTR records announce.
- MX Lookup Find out which servers receive email for a domain, in the order they are tried, and which provider runs them.
- Nameserver Lookup Find the name servers a domain delegates to and, when the hostnames give it away, the DNS host running them.
- Redirect Checker Trace what happens between the URL you type and the page that finally answers: each hop, its status code and how long it took.
- Source Code Viewer Read the raw HTML a server sends for a URL, on a phone or anywhere view-source is out of reach.
- Website to IP Resolve website addresses to the IPv4 and IPv6 addresses their servers answer on, several at a time.
- What Is My IP Address Your public IP address as the internet sees it, with the network, provider and registered location behind it.
- WHOIS Lookup Who registered a domain, through which registrar, when it expires and where its DNS lives, or which organisation holds an IP block.
- YouTube Thumbnail Grabber Every thumbnail size YouTube stores for a video, from a pasted link or ID, with the direct image address of each.
Other categories
- JSON tools
- XML tools
- YAML tools
- CSV and TSV tools
- HTML tools
- CSS tools
- JavaScript tools
- SQL tools
- Code formatters
- Minifiers
- Validators
- Data converters
- Encoders and decoders
- Escape and unescape
- Hash and cryptography
- String and text tools
- Number tools
- Color tools
- Unit converters
- Date and time tools
- Generators
- Random data generators
- Image tools
- Compress and decompress
- Web and developer tools
- Chart makers
- Cheat sheets
- Fun text tools
- Calculators