TLS 1.3 TLS_AES_128_GCM_SHA256
Leaf Certificate
Subject columbia.edu
Issuer WE1
Valid From Aug 12, 2026
Valid Until Nov 10, 2026 (85 days)
Algorithm ECDSA-SHA256
Subject Alternative Names
columbia.edu*.zi.columbia.edu*.drupal7-test.cc.columbia.edu*.reopencu.covid19.columbia.edu*.drupal-test.business.columbia.edu*.site.drupal8dev.cc.columbia.edu*.ias-deprecated-test.cc.columbia.edu*.worklife.columbia.edu*.climate.columbia.edu*.curp.columbia.edu*.sociology.columbia.edu*.drupal-dev.business.columbia.edu*.drupalcustom-dev.cc.columbia.edu*.alumni.columbia.edu*.arch.columbia.edu*.global.columbia.edu*.ias-drupal7-dev.cc.columbia.edu*.cancerdynamics.columbia.edu*.drupal7-dev.cc.columbia.edu*.blog.cup.columbia.edu*.careers.columbia.edu*.cup.columbia.edu*.site.drupal8test.cc.columbia.edu*.site.drupaldistdev.cc.columbia.edu*.drupalcustom-test.cc.columbia.edu*.udev.degreeaudit.sis.columbia.edu*.columbia.edu*.ias-drupal6-dev.cc.columbia.edu*.ias-deprecated-dev.cc.columbia.edu*.business.columbia.edu*.lamptest.columbia.edu
Intermediate
Subject WE1
Issuer GTS Root R4
Valid From Dec 13, 2023
Valid Until Feb 20, 2029 (918 days)
Algorithm ECDSA-SHA384
Intermediate
Subject GTS Root R4
Issuer GlobalSign Root CA
Valid From Nov 15, 2023
Valid Until Jan 28, 2028 (529 days)
Algorithm SHA256-RSA
Findings
✓ TLS 1.3 supported
✓ SSL certificate valid (85 days remaining)
✓ Certificate covers 31 domains (SANs)
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