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k2os.com SSL Certificate – Expired, expires 26 Mar 2026 | CubDomain

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SSL certificate

K

k2os.comSSL certificate & chain

Status: Expired
Expires in: Expired
Issuer: "iTrust
Chain: 4 certificates

Chain1 · Site certificate*.k2os.com 2 · IntermediateiTrust DV TLS CA 3 · IntermediateCertum Trusted Root CA 4 · RootCertum Trusted Network CA

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Certificate chain

1 · Site certificateExpired*.k2os.comIssued by iTrust DV TLS CAExpires 26 Mar 2026
2 · IntermediateValid

iTrust DV TLS CA

Issued by Certum Trusted Root CA

Expires 3 Jan 2035

→3 · IntermediateValidCertum Trusted Root CAIssued by Certum Trusted Network CAExpires 19 Sept 2028

→4 · RootValidCertum Trusted Network CASelf-signed rootExpires 31 Dec 2029

Each certificate is shown in full below, from the site's own to the root.

1

Site certificate

*.k2os.com

Expired

Issued to

Common name (CN): *.k2os.com

Issued by

Common name (CN): iTrust DV TLS CA
Organisation (O): "iTrust
Country (C): CN

Validity

Valid from: 26 Mar 2025, 23:03 UTC
Valid until: 26 Mar 2026, 23:03 UTC
Days remaining: Expired 214 days ago

Technical details

Serial number: 6F:9A:B6:0D:E3:DA:88:30:51:8F:D2:0C:06:38:91:29
Signature algorithm: —

2

Intermediate

iTrust DV TLS CA

Valid

Issued to

Common name (CN): iTrust DV TLS CA
Organisation (O): "iTrust
Country (C): CN

Issued by

Common name (CN): Certum Trusted Root CA
Organisation (O): Asseco Data Systems S.A.
Unit (OU): Certum Certification Authority
Country (C): PL

Validity

Valid from: 15 Jan 2025, 02:33 UTC
Valid until: 3 Jan 2035, 02:33 UTC
Days remaining: 2989

Technical details

Serial number: 00:86:64:41:CC:E9:AE:56:EF:2C:B8:38:C0:27:FF:EE:6A
Signature algorithm: —

3

Intermediate

Certum Trusted Root CA

Valid

Issued to

Common name (CN): Certum Trusted Root CA
Organisation (O): Asseco Data Systems S.A.
Unit (OU): Certum Certification Authority
Country (C): PL

Issued by

Common name (CN): Certum Trusted Network CA
Organisation (O): Unizeto Technologies S.A.
Unit (OU): Certum Certification Authority
Country (C): PL

Validity

Valid from: 19 Sept 2023, 03:00 UTC
Valid until: 19 Sept 2028, 03:00 UTC
Days remaining: 692

Technical details

Serial number: 00:D8:E0:74:4B:58:24:91:9F:BD:08:84:7D:F7:20:20:FA
Signature algorithm: —

4

Root

Certum Trusted Network CA

Valid

Issued to

Common name (CN): Certum Trusted Network CA
Organisation (O): Unizeto Technologies S.A.
Unit (OU): Certum Certification Authority
Country (C): PL

Issued by

Common name (CN): Self-signed
Organisation (O): Unizeto Technologies S.A.
Unit (OU): Certum Certification Authority
Country (C): PL

Validity

Valid from: 22 Oct 2008, 05:07 UTC
Valid until: 31 Dec 2029, 04:07 UTC
Days remaining: 1160

Technical details

Serial number: 04:44:C0
Signature algorithm: —

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