IT Reference Directories
Comprehensive technical guides, protocols configurations, and metrics.
33 Prefixes
CIDR Prefix Directory
Complete calculations, masks, and usable host bounds from /0 to /32.
100+ Ports
Common Network Ports
Protocol summaries, security risks, and UFW/iptables rules.
20+ Schedules
Cron Schedule Reference
Crontab expression cheat sheet, syntax breakdowns, and execution timeline guides.
30+ Status Codes
HTTP Status Codes
Diagnostic meanings, common causes, and server setups.
3 Platforms
VPC Subnetting Guide
Recommended IP allocations, partitioning, and sizing configurations for AWS, GCP, and Azure.
3 Servers
Secure Configurations
Web server code templates to configure security headers, SSL redirections, and prevent loops.
4 Platforms
Platform Comparisons
Detailed feature, speed, and privacy comparisons for Teksolvr vs MXToolbox, CyberChef, DNSChecker, and IP Chicken.