SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ad-sync.tech
SSL/TLS Certificate
SSL/TLS Certificate for ad-sync.tech
Valid- Issued by (CA)
- Google Trust Services
- Subject
- ad-sync.tech
- Valid from
- Jul 25, 2026
- Valid until
- Oct 23, 2026 (50 days remaining)
- Public key
- EC 256-bit
- Serial
- BF0817F40C178B260E368ED2AE429FC3
- SHA-256 fingerprint
- 31:68:F0:28:3B:37:39:5B:7D:F6:AA:69:24:53:75:88:45:27:4F:28:5A:D6:BC:20:13:FA:D8:17:DD:C6:14:0F
- Chain
- WE1 → GTS Root R4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Aug 6, 2026.
Never get surprised by ad-sync.tech's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ad-sync.tech continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
Free for your first domain: uptime, DNS, and certificate together. No credit card.