Engineered for Network Engineers & SysAdmins
Subnet IPv4/IPv6, CIDR notation, visual VLSM planner, and host range breakdown running 100% in your browser.
TLS 1.3 Valid
Days Left: 82 days
Inspect SSL/TLS & HTTP Security Headers
Analyze TLS certificate chains, expiry countdowns, and evaluate HTTP security headers (CSP, HSTS) with strict SSRF defense.
Action: sfc /scannow & DISM
Windows BSOD & Stop Code Reference
Windows stop code, NTSTATUS, and HRESULT database with concrete causes and command-line remediation steps.
Automate with Cron & JSON Utilities
Translate cron schedules into plain language, format/minify JSON payloads, and generate multi-vendor network configs.
Platform Standards & Design Tenets
Architected to OWASP ASVS Level 2 application security benchmarks and Microsoft Fluent 2 design guidelines
100% Client-Side Privacy
Calculations execute strictly in browser Web Workers. Your internal subnet diagrams, hashes, and tokens are never sent to external servers.
OWASP ASVS Hardened
Strict CSP with per-request nonces, 2-year HSTS preload, and multi-layer SSRF mitigation blocking RFC1918 and Cloud IMDS endpoints.
Mobile-First & 4G Optimized
Sub-1.5s LCP on mobile networks. Designed for on-call engineers troubleshooting server racks directly from smartphones.
Fluent 2 & WCAG 2.2 AA
Segoe UI Variable typography, AAA contrast ratios, complete keyboard accessibility, and native light/dark mode persistence.
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