Certificate:

    Data:

        Version: 3 (0x2)

        Serial Number:

            05:53:1b:c4:42:d4:9c:8b:26:4f:ba:d9:5b:40:99:21:2e:4b

        Signature Algorithm: ecdsa-with-SHA384

        Issuer: C = US, O = Let's Encrypt, CN = E6

        Validity

            Not Before: Jul 15 08:35:05 2025 GMT

            Not After : Oct 13 08:35:04 2025 GMT

        Subject: CN = edblogs.columbia.edu

        Subject Public Key Info:

            Public Key Algorithm: id-ecPublicKey

                Public-Key: (256 bit)

                pub:

                    04:47:92:3e:24:3c:9c:e2:fa:9c:aa:07:5c:88:62:

                    ba:fd:45:41:ff:98:6c:55:13:30:67:e6:e7:04:20:

                    b5:b7:9c:41:1a:86:06:09:a7:bc:e8:ae:14:cf:5b:

                    34:01:99:1b:ba:61:b5:b8:93:1b:49:74:2e:44:ad:

                    4f:25:6b:47:2e

                ASN1 OID: prime256v1

                NIST CURVE: P-256

        X509v3 extensions:

            X509v3 Key Usage: critical

                Digital Signature

            X509v3 Extended Key Usage:

                TLS Web Server Authentication, TLS Web Client Authentication

            X509v3 Basic Constraints: critical

                CA:FALSE

            X509v3 Subject Key Identifier:

                98:18:36:0A:6C:A5:3F:3F:51:78:16:D1:BE:46:92:A4:24:0C:DE:69

            X509v3 Authority Key Identifier:

                93:27:46:98:03:A9:51:68:8E:98:D6:C4:42:48:DB:23:BF:58:94:D2

            Authority Information Access:

                CA Issuers - URI:http://e6.i.lencr.org/

            X509v3 Subject Alternative Name:

                DNS:columbiax.columbia.edu, DNS:ctl.columbia.edu, DNS:edblogs.columbia.edu, DNS:online.columbia.edu, DNS:tdp.ctl.columbia.edu, DNS:vptli.columbia.edu, DNS:www.edblogs.columbia.edu, DNS:www.online.columbia.edu

            X509v3 Certificate Policies:

                Policy: 2.23.140.1.2.1

            X509v3 CRL Distribution Points:

                Full Name:

                  URI:http://e6.c.lencr.org/76.crl

            CT Precertificate SCTs:

                Signed Certificate Timestamp:

                    Version   : v1 (0x0)

                    Log ID    : DD:DC:CA:34:95:D7:E1:16:05:E7:95:32:FA:C7:9F:F8:

                                3D:1C:50:DF:DB:00:3A:14:12:76:0A:2C:AC:BB:C8:2A

                    Timestamp : Jul 15 09:33:37.436 2025 GMT

                    Extensions: none

                    Signature : ecdsa-with-SHA256

                                30:46:02:21:00:D6:D8:72:44:AD:01:5B:E9:7C:23:5F:

                                F5:25:C7:A0:C9:2B:D7:96:2C:26:5E:AD:C5:1D:AA:08:

                                E9:35:75:1E:28:02:21:00:CF:C4:7A:61:71:6C:52:F6:

                                8E:7C:5E:71:2F:1B:6A:0C:82:A0:E3:6F:27:D3:16:03:

                                F9:26:43:73:B3:A8:59:6C

                Signed Certificate Timestamp:

                    Version   : v1 (0x0)

                    Log ID    : 1A:04:FF:49:D0:54:1D:40:AF:F6:A0:C3:BF:F1:D8:C4:

                                67:2F:4E:EC:EE:23:40:68:98:6B:17:40:2E:DC:89:7D

                    Timestamp : Jul 15 09:33:35.428 2025 GMT

                    Extensions: none

                    Signature : ecdsa-with-SHA256

                                30:45:02:21:00:BF:02:7A:6F:86:5F:C3:54:CE:28:6F:

                                44:EC:77:28:E8:6C:FB:FC:71:36:DE:7E:E1:60:E4:FA:

                                61:49:E1:02:0E:02:20:51:FA:2D:D1:0A:E1:63:85:8A:

                                D4:B9:A6:7B:21:AF:CC:30:5D:52:D8:0F:BB:5B:2A:FA:

                                18:8F:F8:5F:55:29:BC

    Signature Algorithm: ecdsa-with-SHA384

    Signature Value:

        30:65:02:30:28:0b:39:87:33:0a:b7:8a:63:23:af:e4:5a:fd:

        79:ad:06:f7:8c:86:ba:99:85:65:75:4e:6e:45:74:f2:69:b9:

        f8:92:57:19:45:83:e1:5e:87:e3:63:ec:12:f7:72:16:02:31:

        00:b8:93:5c:f2:91:13:d7:ce:f7:0d:5f:bb:7a:bd:88:ed:c7:

        64:b4:b2:6b:ab:48:e5:78:d9:09:d5:74:58:dc:ac:59:f7:83:

        4f:66:26:58:e5:09:28:47:bf:dc:38:a2:1a

-----BEGIN CERTIFICATE-----

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-----END CERTIFICATE-----