SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
up-to.space
SSL/TLS Certificate
SSL/TLS Certificate for up-to.space
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- up-to.space
- Valid from
- Sep 23, 2026
- Valid until
- Dec 22, 2026 (68 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 0698C386563D816AF60522DB58F27E8CE150
- SHA-256 fingerprint
- 23:44:2A:F7:33:A6:61:9F:61:3D:95:D2:19:0E:5D:9F:7F:91:F4:3B:DA:05:5F:FF:A0:82:CE:22:92:09:6B:90
- Chain
- YR2 → 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 Sep 26, 2026.
Never get surprised by up-to.space's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch up-to.space 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.
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