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dkt.ch SSL Certificate – Not trusted, expires 19 Dec 2026 | CubDomain
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dkt.ch
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SSL certificate
D
dkt.ch
SSL certificate & chain
Status
Not trusted
Expires in
42 days
Issuer
Let's Encrypt
Chain
4 certificates
Certificate chain
1 · Site certificate
Valid
perkins-smartops.com
Issued by YE2
Expires 19 Dec 2026
→
2 · Intermediate
Valid
YE2
Issued by Root YE
Expires 2 Sept 2028
→
3 · Intermediate
Valid
Root YE
Issued by ISRG Root X2
Expires 2 Sept 2032
→
4 · Root
Valid
ISRG Root X2
Self-signed root
Expires 17 Sept 2040
Each certificate is shown in full below, from the site's own to the root.
1
Site certificate
perkins-smartops.com
Valid
Issued to
Common name (CN)
perkins-smartops.com
Issued by
Common name (CN)
YE2
Organisation (O)
Let's Encrypt
Country (C)
US
Validity
Valid from
20 Sept 2026, 18:53 UTC
Valid until
19 Dec 2026, 18:53 UTC
Days remaining
42
Technical details
Serial number
06:FE:53:9C:5E:20:81:8A:5A:CC:2C:C0:E4:9D:FF:1D:94:B2
Signature algorithm
sha384ECDSA
Matches the domain
No
Names covered
Subject Alternative Names · 3
analytics.perkins-smartops.com
perkins-smartops.com
www.perkins-smartops.com
2
Intermediate
YE2
Valid
Issued to
Common name (CN)
YE2
Organisation (O)
Let's Encrypt
Country (C)
US
Issued by
Common name (CN)
Root YE
Organisation (O)
ISRG
Country (C)
US
Validity
Valid from
3 Sept 2025, 00:00 UTC
Valid until
2 Sept 2028, 23:59 UTC
Days remaining
665
Technical details
Serial number
4D:F3:B1:5D:D6:C0:78:4C:50:7C:D3:7B:58:E6:F1:15
Signature algorithm
sha384ECDSA
3
Intermediate
Root YE
Valid
Issued to
Common name (CN)
Root YE
Organisation (O)
ISRG
Country (C)
US
Issued by
Common name (CN)
ISRG Root X2
Organisation (O)
Internet Security Research Group
Country (C)
US
Validity
Valid from
13 May 2026, 00:00 UTC
Valid until
2 Sept 2032, 23:59 UTC
Days remaining
2126
Technical details
Serial number
00:87:21:65:FC:34:B6:E5:FB:A8:AD:D5:B3:70:5F:B5:3A
Signature algorithm
sha384ECDSA
4
Root
ISRG Root X2
Valid
Issued to
Common name (CN)
ISRG Root X2
Organisation (O)
Internet Security Research Group
Country (C)
US
Issued by
Common name (CN)
Self-signed
Organisation (O)
Internet Security Research Group
Country (C)
US
Validity
Valid from
4 Sept 2020, 00:00 UTC
Valid until
17 Sept 2040, 16:00 UTC
Days remaining
5063
Technical details
Serial number
41:D2:9D:D1:72:EA:EE:A7:80:C1:2C:6C:E9:2F:87:52
Signature algorithm
sha384ECDSA
Report
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