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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

about.us · 54.85.227.149:443

Verified

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

Subject
CN=*.about.us
Issuer
C=US O=Amazon CN=Amazon RSA 2048 M04
Valid from
2026-01-02T00:00:00+00:00
Expires
2027-01-30T23:59:59+00:00
Days remaining
130
Serial (hex)
0F498145618DA41EED82E02D2BE17D4A
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.about.us, DNS:about.us

SHA-256 fingerprint

80:77:21:13:F6:18:52:EC:D1:81:0A:A5:0A:6E:25:8D:51:81:82:52:50:10:7B:D4:AA:45:17:C6:21:EB:28:30
Certificate extensions & PEM
authorityKeyIdentifier
1F:52:92:61:56:82:54:7F:81:66:D8:1D:3D:0A:AA:32:5C:87:DD:08
subjectKeyIdentifier
C5:A5:2A:05:4E:BF:B4:2D:A7:FA:E9:BB:77:D3:84:58:CC:7F:8D:30
subjectAltName
DNS:*.about.us, DNS:about.us
certificatePolicies
Policy: 2.23.140.1.2.1
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl.r2m04.amazontrust.com/r2m04.crl
authorityInfoAccess
OCSP - URI:http://ocsp.r2m04.amazontrust.com CA Issuers - URI:http://crt.r2m04.amazontrust.com/r2m04.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 : Jan 2 02:05:43.431 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:7C:32:30:B6:65:51:82:42:98:B4:1A:EF: EE:B4:ED:CE:89:2A:27:27:C7:63:16:FF:79:53:FD:9D: EA:A7:B9:DD:02:20:1D:B9:FE:9D:DD:50:08:25:9E:7E: D5:86:20:DB:00:71:6F:E0:B1:8C:BD:6C:22:9E:45:CA: C1:FD:0B:14:AB:05 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 : Jan 2 02:05:43.446 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:83:B9:CF:5C:56:2D:2A:FB:B0:7F:99: D4:17:CE:DC:69:6B:1F:AF:14:85:19:74:09:37:67:2D: 55:F9:DA:58:5B:02:20:5B:7D:C1:C8:24:F7:9A:74:20: EC:D7:B1:FE:B3:04:5D:E9:5F:00:58:CE:77:A6:DE:ED: BB:0A:7D:23:93:FC:6B Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Jan 2 02:05:43.637 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:B1:6A:34:FE:38:71:81:97:2D:45:40: 52:4B:34:61:E0:76:32:EF:B5:1A:C9:C9:AC:FF:0F:50: F0:84:DB:CB:34:02:20:0A:49:FD:9E:5D:13:29:E5:1C: AA:9C:44:E2:22:47:F9:74:6E:24:D5:FC:46:65:EF:C4: B3:FA:8B:13:5D:88:53
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-22T19:17:35+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Amazon CN=Amazon RSA 2048 M04
Issuer
C=US O=Amazon CN=Amazon Root CA 1
Valid from
2022-08-23T22:26:35+00:00
Expires
2030-08-23T22:26:35+00:00
Days remaining
1431
Serial (hex)
0773124F2A952E3ED18A58BDB85D1BC0CE5F27
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:8B:DF:6E:23:AC:97:1E:B4:E6:26:B2:79:DD:6A:26:F0:57:51:0F:1D:E3:94:29:3A:5E:EA:28:60:DE:01:9B
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
1F:52:92:61:56:82:54:7F:81:66:D8:1D:3D:0A:AA:32:5C:87:DD:08
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
4117
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.

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