Skip to content
cubdomain
cubdomain
Analyse a domain
↑↓
move
Enter
open
Esc
close
Tools
Domains by date
Extension
Contact
Tools
Domains by date
Extension
Contact
Log in
Sign up free
56kn.com SSL Certificate – Expired, expires 5 Aug 2025 | CubDomain
Home
/
Domain reports
/
56kn.com
/
SSL certificate
5
56kn.com
SSL certificate & chain
Status
Expired
Expires in
Expired
Issuer
Let's Encrypt
Chain
3 certificates
Certificate chain
1 · Site certificate
Expired
56kn.com
Issued by R11
Expires 5 Aug 2025
→
2 · Intermediate
Valid
R11
Issued by ISRG Root X1
Expires 12 Mar 2027
→
3 · Root
Valid
ISRG Root X1
Self-signed root
Expires 4 Jun 2035
Each certificate is shown in full below, from the site's own to the root.
1
Site certificate
56kn.com
Expired
Issued to
Common name (CN)
56kn.com
Issued by
Common name (CN)
R11
Organisation (O)
Let's Encrypt
Country (C)
US
Validity
Valid from
7 May 2025, 08:46 UTC
Valid until
5 Aug 2025, 08:46 UTC
Days remaining
Expired 460 days ago
Technical details
Serial number
05:E9:19:80:CD:52:D6:20:20:21:A3:DB:9C:C4:DC:E7:D2:B6
Signature algorithm
—
2
Intermediate
R11
Valid
Issued to
Common name (CN)
R11
Organisation (O)
Let's Encrypt
Country (C)
US
Issued by
Common name (CN)
ISRG Root X1
Organisation (O)
Internet Security Research Group
Country (C)
US
Validity
Valid from
12 Mar 2024, 17:00 UTC
Valid until
12 Mar 2027, 15:59 UTC
Days remaining
123
Technical details
Serial number
00:8A:7D:3E:13:D6:2F:30:EF:23:86:BD:29:07:6B:34:F8
Signature algorithm
—
3
Root
ISRG Root X1
Valid
Issued to
Common name (CN)
ISRG Root X1
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 Jun 2015, 04:04 UTC
Valid until
4 Jun 2035, 04:04 UTC
Days remaining
3128
Technical details
Serial number
00:82:10:CF:B0:D2:40:E3:59:44:63:E0:BB:63:82:8B:00
Signature algorithm
—
Report
Similar sites
SSL certificate
Same IP
20
History
Blocklists
Subdomains
Look-alikes
Other extensions
Reviews
Blog