Network
Subnet Calculator
IPv4 subnet calculator with VLSM, host sizing, network splitting, and RFC 3021 support
CIDR
RFC 3021
VLSM
Open
Network
Verkada PoE Calculator
Generate UniFi switch recommendations for Verkada camera deployments
PoE
Verkada
UniFi
Open
DNS
DNS Fingerprint
Map NS/SOA hostnames to DNS providers for reconnaissance
domaincontrol.com
awsdns-
cloudflare.com
Open
Email
MX Fingerprint
Match MX hosts to mail providers and email security gateways
aspmx.l.google.com
outlook.com
Open
Email
SPF Parser
Flatten, expand, and validate SPF records with mechanism breakdown
v=spf1
include:
~all
Open
DNS
Domain Inspector
WHOIS/RDAP, DNS records, DMARC/SPF, subdomains, and ASN/geo lookup
rdap.org
dns.google
ipwho.is
Open
Network
Ports & Protocols
Searchable reference of common TCP/UDP ports, services, and security notes
TCP/UDP
Well-Known
Security
Open
Network
HTTP Status Codes
Complete HTTP status code reference with descriptions and troubleshooting tips
1xx-5xx
REST API
Debug
Open
Network
MAC Address Lookup
Identify device manufacturers from MAC addresses using OUI database
OUI
Vendor ID
IEEE
Open
Design
Color Palette Builder
Generate harmonies, complements, shades and build custom palettes from hex colors
Harmonies
Shades
Export
Open
Games
Monopoly
Classic Monopoly board game with human and AI players, trading, auctions, and full rules
React
Multiplayer
AI
Play