Tracking 71,605 certificates across 84 domains from the public CT logs (crt.sh). We discover subdomains automatically, track issuer history, and surface shadow IT from cert issuance.
| Domain | Certs | Subdomains | Active | Newest | Health | Last Check |
|---|---|---|---|---|---|---|
| amazon.com | 5,953 | 834 | 0 / 5,953 exp | 2020-01-27 | UP | |
| microsoft.com | 5,827 | 3,779 | 0 / 5,827 exp | 2020-01-29 | UP | |
| shopify.com | 5,252 | 311 | 0 / 5,252 exp | 2020-01-27 | UP | |
| github.io | 5,055 | 328 | 0 / 5,055 exp | 2021-10-16 | UP | |
| blob.core.windows.net | 5,008 | 5 | 0 / 5,008 exp | 2020-09-01 | UP | |
| nytimes.com | 4,607 | 456 | 0 / 4,607 exp | 2025-01-15 | UP | |
| meta.com | 3,420 | 38 | 0 / 3,420 exp | 2022-12-13 | UP | |
| office.com | 3,392 | 1,356 | 0 / 3,392 exp | 2021-03-04 | UP | |
| uber.com | 3,068 | 273 | 360 / 2,708 exp | 2026-06-03 | UP | |
| netflix.com | 2,956 | 630 | 0 / 2,956 exp | 2020-01-27 | UP | |
| sony.com | 2,570 | 1,769 | 0 / 2,570 exp | 2020-01-29 | UP | |
| apple.com | 2,561 | 2,618 | 0 / 2,561 exp | 2020-01-27 | UP | |
| ebay.com | 2,183 | 2,605 | 0 / 2,183 exp | 2020-01-27 | UP | |
| facebook.com | 2,093 | 509 | 0 / 2,093 exp | 2020-09-29 | UP | |
| vercel.com | 1,725 | 178 | 113 / 1,612 exp | 2026-06-02 | UP | |
| discord.com | 1,702 | 38 | 117 / 1,585 exp | 2026-06-02 | UP | |
| paypal.com | 1,679 | 2,005 | 0 / 1,679 exp | 2020-01-27 | UP | |
| netlify.com | 1,646 | 93 | 145 / 1,501 exp | 2026-06-03 | UP | |
| storage.googleapis.com | 1,553 | 4 | 0 / 1,553 exp | 2020-01-27 | UP | |
| signal.org | 1,191 | 57 | 145 / 1,046 exp | 2026-06-03 | UP | |
| google.com | 1,152 | 236 | 0 / 1,152 exp | 2020-07-26 | UP | |
| tumblr.com | 1,025 | 92 | 34 / 991 exp | 2026-06-02 | UP | |
| lyft.com | 915 | 46 | 37 / 878 exp | 2026-06-03 | UP | |
| slack.com | 869 | 4,048 | 0 / 869 exp | 2023-07-22 | UP | |
| blogspot.com | 804 | 88 | 0 / 804 exp | 2020-01-24 | UP | |
| icloud.com | 767 | 4,482 | 0 / 767 exp | 2021-03-31 | UP | |
| tiktok.com | 662 | 80 | 109 / 553 exp | 2026-05-27 | UP | |
| medium.com | 520 | 17 | 34 / 486 exp | 2026-05-28 | UP | |
| pypi.org | 491 | 8 | 18 / 473 exp | 2026-05-08 | UP | |
| gitlab.io | 439 | 42 | 12 / 427 exp | 2026-05-02 | UP | |
| pinterest.com | 368 | 43 | 9 / 359 exp | 2026-05-13 | UP | |
| bitbucket.io | 152 | 1 | 93 / 59 exp | 2026-05-26 | UP |