SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-52-52-31-173.us-west-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-52-52-31-173.us-west-1.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- Entrust Limited
- Subject
- *.agmonitor.com
- Valid from
- Jan 28, 2026
- Valid until
- Feb 18, 2027 (97 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 9B7A7B931057344A5CFCE32C493438E0
- SHA-256 fingerprint
- E2:3C:2C:5C:F0:33:4E:61:B9:9B:69:66:66:AC:6B:F7:32:B1:67:B1:EB:BF:22:1C:D2:5B:26:23:1B:86:9D:0E
- Chain
- Entrust OV TLS Issuing RSA CA 2 → Sectigo Public Server Authentication Root R46
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ec2-52-52-31-173.us-west-1.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-52-52-31-173.us-west-1.compute.amazonaws.com 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.
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