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Subnetting Calculator
A comprehensive IPv4 calculator designed for network engineers and IT professionals
since May 23, 2026 · HTTP 404
CohortClass of 2026What it is
A comprehensive IPv4 calculator designed for network engineers and IT professionals. Performs all essential IPv4 subnetting calculations needed for network design and management. Ideal for both experienced engineers and those pursuing careers in IT and networking.
HTTP liveness
11 probes since May 23May 23Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- May 23, 2026First probe — downDead · 404
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Pulse Indexobserved activity
11 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2026weekly
567 products launched in 2026 · 100% still active
567 active0 sunset
Still active
100%
Median lifespan
4.9y