This service provide certificate information from hostname: 162.159.128.65
Certificate:
Data:
Version: 3 (0x2)
Serial Number:
a0:13:44:ea:fb:77:f7:d6:13:ef:72:4d:45:42:0c:4b
Signature Algorithm: ecdsa-with-SHA256
Issuer: C = US, O = Google Trust Services, CN = WE1
Validity
Not Before: Jul 21 03:45:30 2025 GMT
Not After : Oct 19 04:45:03 2025 GMT
Subject: CN = columbia.edu
Subject Public Key Info:
Public Key Algorithm: id-ecPublicKey
Public-Key: (256 bit)
pub:
04:d1:01:4b:c5:47:ca:4f:6c:04:63:f6:90:df:42:
9a:d9:7a:a1:24:64:d9:57:88:67:8b:74:d6:15:39:
02:07:12:60:21:8f:99:72:c3:d8:af:4c:f2:14:32:
74:22:81:42:cf:15:3e:f3:4d:fa:ff:db:3b:8f:a1:
87:d6:e0:3b:25
ASN1 OID: prime256v1
NIST CURVE: P-256
X509v3 extensions:
X509v3 Key Usage: critical
Digital Signature
X509v3 Extended Key Usage:
TLS Web Server Authentication
X509v3 Basic Constraints: critical
CA:FALSE
X509v3 Subject Key Identifier:
0C:6C:82:A8:98:68:CB:4C:AD:DF:69:5C:FD:3C:73:89:4C:18:CA:47
X509v3 Authority Key Identifier:
90:77:92:35:67:C4:FF:A8:CC:A9:E6:7B:D9:80:79:7B:CC:93:F9:38
Authority Information Access:
OCSP - URI:http://o.pki.goog/s/we1/oBM
CA Issuers - URI:http://i.pki.goog/we1.crt
X509v3 Subject Alternative Name:
DNS:columbia.edu, DNS:*.aging.columbia.edu, DNS:*.apas.provost.columbia.edu, DNS:*.ece.columbia.edu, DNS:*.my.columbia.edu, DNS:*.sipa.columbia.edu, DNS:*.biology.columbia.edu, DNS:*.hbil.bme.columbia.edu, DNS:*.secretary.columbia.edu, DNS:*.faculty-retirement.columbia.edu, DNS:*.opendataservice.columbia.edu, DNS:*.sfs.columbia.edu, DNS:*.ias.columbia.edu, DNS:*.journalism.columbia.edu, DNS:*.library.columbia.edu, DNS:*.registrar.columbia.edu, DNS:*.civil.columbia.edu, DNS:*.communityimpact.columbia.edu, DNS:*.ieor.columbia.edu, DNS:*.militaryandveteranaffairs.columbia.edu, DNS:*.housing.columbia.edu, DNS:*.sai.columbia.edu, DNS:*.rotc.columbia.edu, DNS:*.arts.columbia.edu, DNS:*.artsinitiative.columbia.edu, DNS:*.artsoption.columbia.edu, DNS:*.buellcenter.columbia.edu, DNS:*.capitalism.columbia.edu, DNS:*.educationeconomics.columbia.edu, DNS:*.columbia.edu, DNS:*.slavic.columbia.edu, DNS:*.energypolicy.columbia.edu, DNS:*.communityservice.columbia.edu, DNS:*.cvn.columbia.edu, DNS:*.hellenic.columbia.edu, DNS:*.mrsec.columbia.edu, DNS:*.neuroscience.columbia.edu, DNS:*.printerfix.cuit.columbia.edu, DNS:*.ps.columbia.edu, DNS:*.cumc.columbia.edu, DNS:*.fas.columbia.edu, DNS:*.caring.columbia.edu, DNS:*.harriman.columbia.edu, DNS:*.manhattanville.columbia.edu, DNS:*.ombuds.columbia.edu, DNS:*.sah.columbia.edu, DNS:*.cise.columbia.edu, DNS:*.sexualrespect.columbia.edu, DNS:*.carleton.columbia.edu
X509v3 Certificate Policies:
Policy: 2.23.140.1.2.1
X509v3 CRL Distribution Points:
Full Name:
URI:http://c.pki.goog/we1/CjXVS9991mc.crl
CT Precertificate SCTs:
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 12:F1:4E:34:BD:53:72:4C:84:06:19:C3:8F:3F:7A:13:
F8:E7:B5:62:87:88:9C:6D:30:05:84:EB:E5:86:26:3A
Timestamp : Jul 21 04:45:30.468 2025 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:01:C4:49:B9:A2:7F:6B:84:40:31:E7:DD:
60:DC:A8:61:BF:51:E5:B0:F2:84:FA:F2:0F:0B:CC:13:
13:B7:F3:D6:02:20:6A:A1:D4:CD:0F:A3:EA:E0:3C:28:
7D:ED:84:21:58:2A:22:BC:24:38:56:0D:53:39:F6:96:
4D:44:68:08:0D:45
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : CC:FB:0F:6A:85:71:09:65:FE:95:9B:53:CE:E9:B2:7C:
22:E9:85:5C:0D:97:8D:B6:A9:7E:54:C0:FE:4C:0D:B0
Timestamp : Jul 21 04:45:30.542 2025 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:31:4C:1A:45:08:75:7D:F7:6B:85:E1:B3:
9F:69:BD:55:36:53:67:68:20:9D:BC:3D:04:27:56:1C:
3E:82:CE:46:02:20:3B:9F:DD:EA:8F:51:5F:31:8E:10:
A5:99:75:57:AB:02:42:86:BA:85:03:48:D5:5E:6C:5B:
DA:84:72:4D:2A:80
Signature Algorithm: ecdsa-with-SHA256
Signature Value:
30:45:02:20:1d:5c:e8:02:bb:72:99:b6:46:a3:a7:d8:0d:41:
64:fe:84:91:e5:16:e1:ba:b4:10:8f:e6:1b:1b:7a:db:d9:84:
02:21:00:aa:70:97:91:0b:9a:32:a1:67:97:58:0b:63:4b:7a:
2c:84:25:f4:5d:cc:15:28:c9:be:fb:07:bc:0c:58:fd:c6
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----