Version: v3 Serial Number: 8171515897717389145900370277370952738 Signature Algorithm: SHA256-RSA Issuer: Country: US Organization: DigiCert Inc Organizational Unit: www.digicert.com CommonName: GeoTrust CN RSA CA G1 Validity: Not Before: 2023-10-26 00:00 UTC Not After : 2024-11-25 23:59 UTC Subject: Country: CN Province: 上海市 Organization: 上海途颐信息技术有限公司 CommonName: *.51keduoduo.com Subject Public Key Info: Public Key Algorithm: RSA Public Key: Exponent: 65537 Public Key Modulus: (2048 bits) : B8:49:15:ED:64:CB:81:F5:45:CB:03:EE:77:B9:61:C8: 1A:E2:CA:5F:1E:54:83:EF:48:C6:35:67:65:41:68:97: 2F:6F:6D:72:10:83:5B:DC:02:CC:FA:D4:E0:16:83:AB: 73:C7:51:5B:46:A4:13:E4:3F:6E:D1:59:F8:C0:8B:02: 44:EF:D0:95:F6:DF:46:15:09:CF:6F:B8:54:0B:A9:5A: 26:BA:52:5B:1E:D7:DF:A3:57:25:50:64:7E:85:92:94: 7A:E1:7C:B0:2F:9E:09:1D:C4:84:CA:F7:D8:AE:98:02: CC:5C:86:ED:70:EC:97:70:18:39:E5:F9:9C:C5:64:12: B6:AC:A4:CD:3B:6A:14:3E:C9:F0:81:56:13:2E:A5:9C: EE:4B:AB:97:FD:00:3F:AC:76:48:5D:2D:A0:BF:52:60: 33:08:18:E2:9A:82:B2:DD:BB:8B:15:35:01:04:DA:7F: DE:6E:B7:38:3E:47:17:80:E9:8F:95:A4:F0:C0:B7:89: C6:3D:56:B6:DC:DB:9C:73:F1:32:92:E6:DD:82:68:35: E7:2B:12:4B:F1:74:D2:78:2A:87:98:AA:39:A6:AA:14: 17:E3:42:7C:81:44:8A:6A:81:A0:42:D8:B7:96:15:57: 53:DE:29:F3:DC:14:F2:D7:94:AC:CF:D5:4E:EF:71:35 Authority Key Identifier: 91:9F:5E:31:15:AE:10:9F:AD:60:C1:F7:C1:CC:AA:48:34:2F:0C:26 Subject Key Identifier: 36:91:87:91:7C:FB:6C:9C:25:00:9A:BB:53:B1:75:26:AE:90:50:16 CRL Distribution Points: http://crl3.digicert.com/GeoTrustCNRSACAG1.crl http://crl4.digicert.com/GeoTrustCNRSACAG1.crl Basic Constraints: CA : false Path Length Constraint: UNLIMITED OCSP Server: http://ocsp.dcocsp.cn Issuing Certificate URL: http://crl.digicert-cn.com/GeoTrustCNRSACAG1.crt Key Usage: Digital Signature Key Encipherment Extended Key Usage: Server Auth Client Auth DNS Names: *.51keduoduo.com 51keduoduo.com Certificate Signature Algorithm: SHA256-RSA Certificate Signature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

Version: v3 Serial Number: 8171515897717389145900370277370952738 Signature Algorithm: SHA256-RSA Issuer: Country: US Organization: DigiCert Inc Organizational Unit: www.digicert.com CommonName: GeoTrust CN RSA CA G1 Validity: Not Before: 2023-10-26 00:00 UTC Not After : 2024-11-25 23:59 UTC Subject: Country: CN Province: 上海市 Organization: 上海途颐信息技术有限公司 CommonName: *.51keduoduo.com Subject Public Key Info: Public Key Algorithm: RSA Public Key: Exponent: 65537 Public Key Modulus: (2048 bits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uthority Key Identifier: 91:9F:5E:31:15:AE:10:9F:AD:60:C1:F7:C1:CC:AA:48:34:2F:0C:26 Subject Key Identifier: 36:91:87:91:7C:FB:6C:9C:25:00:9A:BB:53:B1:75:26:AE:90:50:16 CRL Distribution Points: http://crl3.digicert.com/GeoTrustCNRSACAG1.crl http://crl4.digicert.com/GeoTrustCNRSACAG1.crl Basic Constraints: CA : false Path Length Constraint: UNLIMITED OCSP Server: http://ocsp.dcocsp.cn Issuing Certificate URL: http://crl.digicert-cn.com/GeoTrustCNRSACAG1.crt Key Usage: Digital Signature Key Encipherment Extended Key Usage: Server Auth Client Auth DNS Names: *.51keduoduo.com 51keduoduo.com Certificate Signature Algorithm: SHA256-RSA Certificate Signature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

Version: v3 Serial Number: 8171515897717389145900370277370952738 Signature Algorithm: SHA256-RSA Issuer: Country: US Organization: DigiCert Inc Organizational Unit: www.digicert.com CommonName: GeoTrust CN RSA CA G1 Validity: Not Before: 2023-10-26 00:00 UTC Not After : 2024-11-25 23:59 UTC Subject: Country: CN Province: 上海市 Organization: 上海途颐信息技术有限公司 CommonName: *.51keduoduo.com Subject Public Key Info: Public Key Algorithm: RSA Public Key: Exponent: 65537 Public Key Modulus: (2048 bits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uthority Key Identifier: 91:9F:5E:31:15:AE:10:9F:AD:60:C1:F7:C1:CC:AA:48:34:2F:0C:26 Subject Key Identifier: 36:91:87:91:7C:FB:6C:9C:25:00:9A:BB:53:B1:75:26:AE:90:50:16 CRL Distribution Points: http://crl3.digicert.com/GeoTrustCNRSACAG1.crl http://crl4.digicert.com/GeoTrustCNRSACAG1.crl Basic Constraints: CA : false Path Length Constraint: UNLIMITED OCSP Server: http://ocsp.dcocsp.cn Issuing Certificate URL: http://crl.digicert-cn.com/GeoTrustCNRSACAG1.crt Key Usage: Digital Signature Key Encipherment Extended Key Usage: Server Auth Client Auth DNS Names: *.51keduoduo.com 51keduoduo.com Certificate Signature Algorithm: SHA256-RSA Certificate Signature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

Version: v3 Serial Number: 8171515897717389145900370277370952738 Signature Algorithm: SHA256-RSA Issuer: Country: US Organization: DigiCert Inc Organizational Unit: www.digicert.com CommonName: GeoTrust CN RSA CA G1 Validity: Not Before: 2023-10-26 00:00 UTC Not After : 2024-11-25 23:59 UTC Subject: Country: CN Province: 上海市 Organization: 上海途颐信息技术有限公司 CommonName: *.51keduoduo.com Subject Public Key Info: Public Key Algorithm: RSA Public Key: Exponent: 65537 Public Key Modulus: (2048 bits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uthority Key Identifier: 91:9F:5E:31:15:AE:10:9F:AD:60:C1:F7:C1:CC:AA:48:34:2F:0C:26 Subject Key Identifier: 36:91:87:91:7C:FB:6C:9C:25:00:9A:BB:53:B1:75:26:AE:90:50:16 CRL Distribution Points: http://crl3.digicert.com/GeoTrustCNRSACAG1.crl http://crl4.digicert.com/GeoTrustCNRSACAG1.crl Basic Constraints: CA : false Path Length Constraint: UNLIMITED OCSP Server: http://ocsp.dcocsp.cn Issuing Certificate URL: http://crl.digicert-cn.com/GeoTrustCNRSACAG1.crt Key Usage: Digital Signature Key Encipherment Extended Key Usage: Server Auth Client Auth DNS Names: *.51keduoduo.com 51keduoduo.com Certificate Signature Algorithm: SHA256-RSA Certificate Signature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