Index · Cert expiry · Fastest sites · Free tools · API
20 popular infra sites, ranked by security-header score. Live data, built 2026-11-01.
| # | Site | Headers | Score | Cert days | Avail | ms |
|---|---|---|---|---|---|---|
| 1 | docker.com | B | 83 | 56 | 100% | 83.6 |
| 2 | ansible.com | B | 83 | 51 | 100% | 1193.1 |
| 3 | datadoghq.com | B | 83 | 144 | 100% | 150.6 |
| 4 | opentelemetry.io | B | 83 | 89 | 100% | 136.1 |
| 5 | puppet.com | C | 67 | 51 | 100% | 113.7 |
| 6 | chef.io | C | 67 | 62 | 100% | 99.4 |
| 7 | jenkins.io | C | 50 | 72 | 100% | 287.7 |
| 8 | circleci.com | C | 50 | 95 | 100% | 170.2 |
| 9 | terraform.io | D | 33 | 81 | 100% | 283.7 |
| 10 | grafana.com | D | 33 | 152 | 100% | 72.1 |
| 11 | prometheus.io | D | 33 | 58 | 100% | 227.8 |
| 12 | apache.org | D | 33 | 69 | 100% | 23.0 |
| 13 | istio.io | D | 33 | 82 | 100% | 62.8 |
| 14 | kubernetes.io | F | 17 | 69 | 100% | 72.8 |
| 15 | elastic.co | F | 17 | 64 | 100% | 80.2 |
| 16 | sentry.io | F | 17 | 111 | 100% | 270.6 |
| 17 | nginx.org | F | 17 | 73 | 100% | 266.4 |
| 18 | argoproj.github.io | F | 17 | 58 | 100% | 64.0 |
| 19 | hashicorp.com | F | 0 | 51 | 100% | 64.5 |
| 20 | travis-ci.com | F | 0 | 70 | 100% | 303.4 |