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substackcdn.com SSL Certificate – Expired, expires 11 Feb 2026 | CubDomain

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SSL certificate

S

substackcdn.comSSL certificate & chain

Status: Expired
Expires in: Expired
Issuer: Amazon
Chain: 4 certificates

Report Similar sites SSL certificate Same IP19 History Blocklists Subdomains Look-alikes Other extensions Reviews Blog

Chain1 · Site certificatesubstackcdn.com 2 · IntermediateAmazon RSA 2048 M03 3 · IntermediateAmazon Root CA 1 4 · RootStarfield Services Root Certificate Authority - G2

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Certificate chain

1 · Site certificateExpiredsubstackcdn.comIssued by Amazon RSA 2048 M03Expires 11 Feb 2026
2 · IntermediateValidAmazon RSA 2048 M03Issued by Amazon Root CA 1Expires 23 Aug 2030
3 · IntermediateValidAmazon Root CA 1Issued by Starfield Services Root Certificate Authority - G2Expires 30 Dec 2037
4 · RootValidStarfield Services Root Certificate Authority - G2Self-signed rootExpires 31 Dec 2037

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

1

Site certificate

substackcdn.com

Expired

Issued to

Common name (CN): substackcdn.com

Issued by

Common name (CN): Amazon RSA 2048 M03
Organisation (O): Amazon
Country (C): US

Validity

Valid from: 12 Jan 2025, 16:00 UTC
Valid until: 11 Feb 2026, 15:59 UTC
Days remaining: Expired 249 days ago

Technical details

Serial number: 07:D3:5B:6A:6F:8D:DB:A6:DD:47:C8:99:F6:B4:5A:AB
Signature algorithm: —

2

Intermediate

Amazon RSA 2048 M03

Valid

Issued to

Common name (CN): Amazon RSA 2048 M03
Organisation (O): Amazon
Country (C): US

Issued by

Common name (CN): Amazon Root CA 1
Organisation (O): Amazon
Country (C): US

Validity

Valid from: 23 Aug 2022, 15:26 UTC
Valid until: 23 Aug 2030, 15:26 UTC
Days remaining: 1404

Technical details

Serial number: 07:73:12:4C:D4:06:D2:67:C0:99:1C:DD:29:9A:9F:38:31:79:85
Signature algorithm: —

3

Intermediate

Amazon Root CA 1

Valid

Issued to

Common name (CN): Amazon Root CA 1
Organisation (O): Amazon
Country (C): US

Issued by

Common name (CN): Starfield Services Root Certificate Authority - G2
Organisation (O): "Starfield Technologies
Country (C): US
State (ST): Arizona
Locality (L): Scottsdale

Validity

Valid from: 25 May 2015, 05:00 UTC
Valid until: 30 Dec 2037, 17:00 UTC
Days remaining: 4090

Technical details

Serial number: 06:7F:94:4A:2A:27:CD:F3:FA:C2:AE:2B:01:F9:08:EE:B9:C4:C6
Signature algorithm: —

4

Root

Starfield Services Root Certificate Authority - G2

Valid

Issued to

Common name (CN): Starfield Services Root Certificate Authority - G2
Organisation (O): "Starfield Technologies
Country (C): US
State (ST): Arizona
Locality (L): Scottsdale

Issued by

Common name (CN): Self-signed
Organisation (O): "Starfield Technologies
Country (C): US
State (ST): Arizona
Locality (L): Scottsdale

Validity

Valid from: 31 Aug 2009, 17:00 UTC
Valid until: 31 Dec 2037, 15:59 UTC
Days remaining: 4091

Technical details

Serial number: 00
Signature algorithm: —