DNS
THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.3

compuserve.com · 54.236.212.92:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
CN=*.compuserve.com
Issuer
C=US O=Amazon CN=Amazon RSA 2048 M01
Valid from
2026-09-16T00:00:00+00:00
Expires
2027-04-01T23:59:59+00:00
Days remaining
158
Serial (hex)
06579BBD63D239AB666CFB23626B52A7
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.compuserve.com, DNS:isp.netscape.com, DNS:webcenters.netscape.compuserve.com, DNS:lite.aol.com, DNS:*.lite.aol.com, DNS:connect.netscape.com, DNS:pslca.web.aol.com, DNS:*.connect.netscape.com, DNS:*.isp.netscape.com, DNS:compuserve.com

SHA-256 fingerprint

D9:2F:D5:2A:7D:44:45:9E:D9:38:E8:38:2E:90:9C:26:43:C4:D3:19:98:C7:EA:2C:92:8B:A9:A2:40:26:84:AD
Certificate extensions & PEM
authorityKeyIdentifier
81:B8:0E:63:8A:89:12:18:E5:FA:3B:3B:50:95:9F:E6:E5:90:13:85
subjectKeyIdentifier
F1:90:D8:8F:0D:EE:69:DD:8D:7C:9C:B5:BE:8A:F0:C5:15:B9:F3:3A
subjectAltName
DNS:*.compuserve.com, DNS:isp.netscape.com, DNS:webcenters.netscape.compuserve.com, DNS:lite.aol.com, DNS:*.lite.aol.com, DNS:connect.netscape.com, DNS:pslca.web.aol.com, DNS:*.connect.netscape.com, DNS:*.isp.netscape.com, DNS:compuserve.com
certificatePolicies
Policy: 2.23.140.1.2.1
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl.r2m01.amazontrust.com/r2m01.crl
authorityInfoAccess
OCSP - URI:http://ocsp.r2m01.amazontrust.com CA Issuers - URI:http://crt.r2m01.amazontrust.com/r2m01.cer
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F: AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26 Timestamp : Sep 16 04:32:50.620 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:22:E1:EA:13:F5:58:98:2F:92:FD:BF:45: D0:B7:B9:77:1E:2F:D4:E8:A4:0D:ED:C0:20:C6:70:0D: 21:2C:C4:E7:02:20:62:1E:98:59:0C:C0:F5:F6:9F:9E: 76:B7:20:7D:23:73:48:A6:1D:ED:24:CE:96:1A:67:C6: 59:32:1A:5F:BF:DF Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 44:C2:BD:0C:E9:14:0E:64:A5:C9:4A:01:93:0A:5A:A1: BB:35:97:0E:00:EE:11:16:89:68:2A:1C:44:D7:B5:66 Timestamp : Sep 16 04:32:50.674 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:80:8C:B6:2C:A2:20:D6:1A:CC:11:54: 4B:8C:5F:FD:C7:3C:E5:40:DF:29:CD:75:54:B8:E5:17: 36:70:3C:5C:44:02:20:63:73:EC:DE:AD:54:A6:1C:27: 71:7C:8A:30:3A:B1:F7:D4:F8:A8:89:07:F6:B3:3A:53: E3:EF:A4:69:3B:76:B2 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Sep 16 04:32:50.892 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:BE:7E:77:5E:50:F8:AA:F4:E5:A5:12: 80:48:76:2F:4D:CF:8D:96:84:C7:4F:25:92:A9:D2:E6: B0:4A:CD:E2:0F:02:21:00:9A:FB:34:66:98:67:1A:19: A8:D3:BC:B0:D3:2A:76:CD:5F:54:91:96:9C:72:D8:02: 3E:BF:AB:28:CD:E7:CF:60
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-25T17:25:58+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Amazon CN=Amazon RSA 2048 M01
Issuer
C=US O=Amazon CN=Amazon Root CA 1
Valid from
2022-08-23T22:21:28+00:00
Expires
2030-08-23T22:21:28+00:00
Days remaining
1398
Serial (hex)
077312380B9D6688A33B1ED9BF9CCDA68E0E0F
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

53:38:EB:EC:8F:B2:AC:60:99:61:26:D3:E7:6A:A3:4F:D0:F3:31:8A:C7:8E:BB:7A:C8:F6:F1:36:1F:48:4B:33
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
subjectKeyIdentifier
81:B8:0E:63:8A:89:12:18:E5:FA:3B:3B:50:95:9F:E6:E5:90:13:85
authorityKeyIdentifier
84:18:CC:85:34:EC:BC:0C:94:94:2E:08:59:9C:C7:B2:10:4E:0A:08
authorityInfoAccess
OCSP - URI:http://ocsp.rootca1.amazontrust.com CA Issuers - URI:http://crt.rootca1.amazontrust.com/rootca1.cer
crlDistributionPoints
Full Name: URI:http://crl.rootca1.amazontrust.com/rootca1.crl
certificatePolicies
Policy: 2.23.140.1.2.1
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=Amazon CN=Amazon Root CA 1
Issuer
C=US ST=Arizona L=Scottsdale O=Starfield Technologies, Inc. CN=Starfield Services Root Certificate Authority - G2
Valid from
2015-05-25T12:00:00+00:00
Expires
2037-12-31T01:00:00+00:00
Days remaining
4084
Serial (hex)
067F944A2A27CDF3FAC2AE2B01F908EEB9C4C6
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

87:DC:D4:DC:74:64:0A:32:2C:D2:05:55:25:06:D1:BE:64:F1:25:96:25:80:96:54:49:86:B4:85:0B:C7:27:06
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Digital Signature, Certificate Sign, CRL Sign
subjectKeyIdentifier
84:18:CC:85:34:EC:BC:0C:94:94:2E:08:59:9C:C7:B2:10:4E:0A:08
authorityKeyIdentifier
9C:5F:00:DF:AA:01:D7:30:2B:38:88:A2:B8:6D:4A:9C:F2:11:91:83
authorityInfoAccess
OCSP - URI:http://ocsp.rootg2.amazontrust.com CA Issuers - URI:http://crt.rootg2.amazontrust.com/rootg2.cer
crlDistributionPoints
Full Name: URI:http://crl.rootg2.amazontrust.com/rootg2.crl
certificatePolicies
Policy: X509v3 Any Policy
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

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