SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
1and1-hosting.education
SSL/TLS Certificate
SSL/TLS Certificate for 1and1-hosting.education
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.1and1-hosting.education
- Valid from
- Feb 10, 2026
- Valid until
- Feb 10, 2027 (93 days remaining)
- Public key
- RSA 2048-bit
- Serial
- C620017D3B50CA7FB438C730436FF38D
- SHA-256 fingerprint
- B1:FA:69:5B:DA:F4:A5:40:65:FC:80:B8:B8:72:EB:1E:27:C5:A8:8B:DA:C6:C1:37:F0:71:75:D5:DE:18:70:10
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
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 23, 2026.
Never get surprised by 1and1-hosting.education's certificate expiring
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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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