Change monitoring for your public surface
Know what changed.
Continuous monitoring for certificates, DNS and agent endpoints. See the exact diff when anything changes.
Recent changes
6Illustrative sequence · one change per check
18 minutes ago Issuing CA changed
- changed expiry_bucket
- was lte_14d now lte_90d
chain
leaf
- changed fingerprint
- was 9e4c2a0f8d6b4e2c0a8f6d4b2e0c8a6f4d2b0e8c6a4f2d0b8e6c4a2f0d8b6e4c now 51d8a3f6c0e9b2d7a4f1c8e5b0d3a6f9c2e7b4d1a8f5c0e3b6d9a2f7c4e1b8d5
- changed issuer
- was Let's Encrypt / R11 now Google Trust Services / WE1
- changed not_after
- was 2026-10-02T00:00:00Z now 2026-12-17T00:00:00Z
- changed not_before
- was 2026-07-04T00:00:00Z now 2026-09-18T00:00:00Z
- changed spki_sha256
- was 3f1a9c0e7b2d4f6a8c1e3b5d7f9a0c2e4b6d8f1a3c5e7b9d0f2a4c6e8b1d3f5a now b72e5d1c9a4f8e3b6d0c2a7f5e1b9d4c8a3f6e0b2d7c5a1f9e4b8d3c6a0f2e7b
1 hour ago Content-Security-Policy removed
headers
- changed content_security_policy
- removed { "default-src": [ "'self'" ], "script-src": [ "'self'", "cdn.shop.example.com" ] }added absent
6 hours ago Records changed
- changed records
- removed 192.0.2.35added 198.51.100.35
1 day ago Post-quantum turned on
- added hybrid_group
- now X25519MLKEM768
- changed hybrid_supported
- was false now true
- changed preferred_group
- was X25519 now X25519MLKEM768
2 days ago Tool added
tools
fetch_site_mapadded
- added description
- now Fetch the site map as a list of page URLs.
2 days ago Price changed
accepts
eip155:8453|0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
- changed amount
- was 50000 now 100000
Example observations, not live results.
Try it on any domain.
The usual checks
Newer, and rarely watched
No sign-up required.[scan queues, does not run]
Sample results. Run a check to see your own.
01
What changed.
See exactly what changed, with clean comparisons that make sense. No noise, just what matters.
- changed expiry_bucket
- was lte_14d now lte_90d
chain
leaf
- changed fingerprint
- was 9e4c2a0f8d6b4e2c0a8f6d4b2e0c8a6f4d2b0e8c6a4f2d0b8e6c4a2f0d8b6e4c now 51d8a3f6c0e9b2d7a4f1c8e5b0d3a6f9c2e7b4d1a8f5c0e3b6d9a2f7c4e1b8d5
- changed issuer
- was Let's Encrypt / R11 now Google Trust Services / WE1
- changed not_after
- was 2026-10-02T00:00:00Z now 2026-12-17T00:00:00Z
- changed not_before
- was 2026-07-04T00:00:00Z now 2026-09-18T00:00:00Z
- changed spki_sha256
- was 3f1a9c0e7b2d4f6a8c1e3b5d7f9a0c2e4b6d8f1a3c5e7b9d0f2a4c6e8b1d3f5a now b72e5d1c9a4f8e3b6d0c2a7f5e1b9d4c8a3f6e0b2d7c5a1f9e4b8d3c6a0f2e7b
02
Historical evidence.
A complete timeline of changes, so you can trace what happened, when, and why.
03
Simple, predictable pricing.
Upgrade for faster checks and more monitors. No overages.
Free
For personal domains and side projects.
€0 [price is copy, not from billing]
- 5 monitors
- Checks daily
- 1 seat
- Email, Slack and webhook alerts
- History[retention not in plan limits]
Starter
For solo developers with production domains.
€9 / month[price is copy, not from billing]
- 5 monitors
- Checks hourly
- 5 seats
- Email, Slack and webhook alerts
- History[retention not in plan limits]
Pro Recommended
For teams running production services.
€25 / month[price is copy, not from billing]
- 20 monitors
- Checks every 5 minutes
- 10 seats
- Email, Slack and webhook alerts
- History[retention not in plan limits]
No credit card required.
Enterprise
For larger fleets and custom needs.
Custom
Contact sales[no contact channel yet]