Developer Tools
Subnet Calc
Last updated 2026-09-10 · benchmark measured 2026-09-10 — deterministic & reproducible
Online subnet calculator and IP address management tool.
66/100
Top 82% of 11,664 measured
Legit Benchmark — the simple average of 7 measured frames. Frames we could not measure are left out of the average, never counted as zero. Every frame is shown below with its evidence.
Checked 2026-09-10 · scores move as sites change
Is Subnet Calc production-ready?
Legit.Show scores Subnet Calc 66 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Subnet Calc (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Security; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 37/100
- Accessibility — 92/100
- Security — 100/100
- Privacy — 0/100
- Reliability — 75/100
- Standards — 87/100
- Discoverability — 70/100
What we measured
- Security headers present: CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 587 ms to first byte.
- 3 of 3 sampled routes reachable.
- No privacy policy found.
- Sets cookies / loads scripts with no consent prompt.
- Discoverable: sitemap, OpenGraph image.
Who it's for
Network engineers · System administrators · IT professionals · Students · DevOps teams
Visit Subnet Calc → · Alternatives to Subnet Calc → · How this was measured →