tools index
All tools, one place.
18 / 18 liveEighteen tools spanning DNS, network reachability, IP & geolocation, encoding, hashing, and utilities. Every tool's a single page, every page leads with the input field.
DNS & Domain
Resolve names, look up domains, walk the chain.dns-lookuplive
DNS Lookup
Query A, AAAA, MX, TXT, CNAME, NS, SOA records.
$dns example.com
→ A 93.184.216.34
open console
whois-lookuplive
WHOIS Lookup
Domain registration, ownership, expiry.
$whois example.com
→ IANA · est 1995
open console
reverse-dns-lookuplive
Reverse DNS
Look up the hostname for an IP address.
$rev 8.8.8.8
→ dns.google
open console
Network
Reach things. Test ports. Inspect the path.ping-testlive
Ping Test
Test reachability over HTTPS with millisecond timings.
$ping example.com ×4
→ avg 38ms · 100%
open console
port-checkerlive
Port Checker
Check whether a TCP port is open on a host.
$port 443 example.com
→ open · 24ms
open console
ssl-certificate-checkerlive
SSL Certificate Checker
Verify chain, issuer, and expiry of a TLS certificate.
$tls example.com
→ valid · 84d left
open console
http-header-checkerlive
HTTP Header Checker
Inspect the response headers of any URL.
$head example.com
→ 200 · cf-cache HIT
open console
Browse all 18 tools
Browse all 18 tools
IP & Geo
Where an address lives, and how it arrived.Encoding & Hashing
Translate, decode, fingerprint.base64-encoder-decoderlive
Base64 Encoder / Decoder
Round-trip text and bytes through Base64.
$b64 "hello"
→ aGVsbG8=
open console
url-encoder-decoderlive
URL Encoder / Decoder
Percent-encode or decode a URL safely.
$url "a b c"
→ a%20b%20c
open console
binary-to-textlive
Binary to Text
Convert binary, hex, and decimal to readable text.
$bin "Hi"
→ 01001000 01101001
open console
json-yaml-formatterlive
JSON / YAML Formatter
Pretty-print, minify, and convert between JSON and YAML.
$fmt {"a":1}
→ { "a": 1 }
open console
hash-generatorlive
Hash Generator
MD5, SHA-1, SHA-256, SHA-512 of text input.
$sha256 "hello"
→ 2cf24dba5fb0…
open console
Browse all 18 tools
Utilities
Subnet math, MAC lookup, the long tail of tools.subnet-calculatorlive
Subnet Calculator
Compute network, broadcast, range, mask from CIDR.
$cidr 10.0.0.0/24
→ 254 hosts · /24
open console
mac-address-lookuplive
MAC Address Lookup
Identify the vendor from an OUI prefix.
$oui AC:DE:48
→ Private · IEEE
open console
type7-password-decryptorlive
Type 7 Decryptor
Decode Cisco Type 7 obfuscated passwords.
$t7 0822455D0A16
→ cisco
open console
cron-job-generatorlive
Cron Job Generator
Build and explain cron expressions, human readable.
$0 9 * * 1
→ Mondays · 09:00
open console
Browse all 18 tools
Browse all 18 tools