SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
overtake-companion.app
SSL/TLS Certificate
SSL/TLS Certificate for overtake-companion.app
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- overtake-companion.app
- Valid from
- Sep 26, 2026
- Valid until
- Dec 25, 2026 (67 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 059A66DA84F6911F24F15A3874C6D7D8EFF1
- SHA-256 fingerprint
- 33:55:FC:AC:5C:05:E4:23:5E:28:01:C6:BE:62:D9:0C:19:DB:B0:E7:69:77:EB:DE:D0:8B:CC:A7:B2:B0:31:BB
- Chain
- YR1 → Root YR → ISRG Root X1
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 Oct 2, 2026.
Never get surprised by overtake-companion.app's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch overtake-companion.app 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, CNAME, TXT 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.