DNS
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

TLSv1.2

umn.edu · 134.84.66.22:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed

Certificate verification failed

Subject
C=US ST=Minnesota O=University of Minnesota CN=www.umn.edu
Issuer
C=US O=InCommon, LLC CN=InCommon RSA OV SSL CA 3
Valid from
2026-06-23T00:00:00+00:00
Expires
2027-01-07T23:59:59+00:00
Days remaining
89
Serial (hex)
EDB7E079F8B62B064E9AE999A717DC14
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:www.umn.edu, DNS:myaccount.umn.edu, DNS:tc.umn.edu, DNS:umn.edu, DNS:www1.umn.edu

SHA-256 fingerprint

0D:AC:3D:FF:E6:18:8A:E5:83:18:75:0C:31:41:BC:5F:B5:EE:B6:62:D1:1C:37:15:53:24:35:35:5F:86:A7:65
Certificate extensions & PEM
authorityKeyIdentifier
DA:22:37:3F:E5:D3:74:DA:D9:79:3E:D1:72:6D:D5:93:4B:20:37:AF
subjectKeyIdentifier
DC:F6:01:2C:E8:9B:A3:A5:E0:75:93:C8:35:1A:A2:EF:C1:08:32:29
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication
certificatePolicies
Policy: 2.23.140.1.2.2
crlDistributionPoints
Full Name: URI:http://crl.sectigo.com/InCommonRSAOVSSLCA3.crl
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/InCommonRSAOVSSLCA3.crt OCSP - URI:http://ocsp.sectigo.com
ct_precert_scts
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 : Jun 23 21:21:16.660 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:3C:E0:F5:06:D8:2B:9F:90:DE:07:BE:5D: 22:2E:41:D7:9C:46:2B:68:92:CC:36:75:40:A9:7A:4E: 7C:EA:D3:8C:02:21:00:E3:82:31:BC:99:AC:6F:EE:98: 28:04:2D:81:3C:AB:27:31:6A:65:C1:27:0D:1D:6F:E6: 56:5A:9C:D0:B9:0F:4A Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46: FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8 Timestamp : Jun 23 21:21:17.566 2026 GMT Extensions: 00:00:05:00:04:67:8E:DF Signature : ecdsa-with-SHA256 30:45:02:20:39:B2:54:90:D2:F8:E2:76:5E:0E:67:F1: E1:93:12:79:4B:9E:2C:2E:9F:A6:62:12:DB:47:68:EA: 13:8A:D5:02:02:21:00:FD:01:39:52:C9:B1:DD:65:F0: 41:9B:46:FA:B3:3A:9C:12:F5:0D:0F:96:98:CF:F7:CB: 57:02:97:59:28:DB:4F Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 59:6E:6C:33:86:94:B2:59:72:A2:56:C8:A0:E8:DD:90: 4A:76:E8:08:3D:DA:87:3B:01:08:38:28:14:3C:EE:59 Timestamp : Jun 23 21:21:16.827 2026 GMT Extensions: 00:00:05:00:00:3E:59:AE Signature : ecdsa-with-SHA256 30:44:02:20:7E:04:FA:F7:8C:BD:04:9D:BB:26:7C:4E: B5:48:A3:4D:AB:C0:34:0C:79:3A:EB:E2:9C:8B:37:10: 42:15:E8:15:02:20:1C:03:EA:78:DA:8C:CD:70:C5:76: 08:E0:1C:60:03:39:BA:FA:5D:9F:8E:FD:E7:27:14:A6: 07:D6:1E:1B:62:AD
subjectAltName
DNS:www.umn.edu, DNS:myaccount.umn.edu, DNS:tc.umn.edu, DNS:umn.edu, DNS:www1.umn.edu
-----BEGIN CERTIFICATE-----
MIIGyzCCBTOgAwIBAgIRAO234Hn4tisGTprpmacX3BQwDQYJKoZIhvcNAQELBQAw
SDELMAkGA1UEBhMCVVMxFjAUBgNVBAoTDUluQ29tbW9uLCBMTEMxITAfBgNVBAMT
GEluQ29tbW9uIFJTQSBPViBTU0wgQ0EgMzAeFw0yNjA2MjMwMDAwMDBaFw0yNzAx
MDcyMzU5NTlaMFkxCzAJBgNVBAYTAlVTMRIwEAYDVQQIEwlNaW5uZXNvdGExIDAe
BgNVBAoTF1VuaXZlcnNpdHkgb2YgTWlubmVzb3RhMRQwEgYDVQQDEwt3d3cudW1u
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B1JmMm6a9LS95QjmOb4/9h9tcyvHPMmT6Fjt+XfngG6MwDZrfLROVrJwL0ZFA3rH
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hkiG9w0BAQsFAAOCAYEAFx4o1PrKJPIGGGmEFn1Ph6hmkSY+X6meN/UXwAHKj/Dq
dGAy+5xXierekoB48ovByXElucC1jVMujTtgTUfmbs4xvAKKEiSAR3ATd7767ZvB
CU02pJtPBwi/ufStw1l6iSxEW+fG+b1NhN1MzISf4WDf6jPLnYtAE9ntnGpH8dR7
hCKlDmVxqCw7xiyDLO0JUN3ZPxhBFvxz62PZiz+zFoxDvPXAMDVgyDwyOnxnRIQo
zZtABaVh8S20dz17j+ugIIMN0xh0j8VYrIyegqDg4LkPmgIatQr3PyU72DRxYysp
hdQ1YOXvXuzNs01D30SSihlFgHYnsoy0VXg3aSiS0I3iKWVc7juScnNqlLkW2eFl
Qe4+Xnen1w91wcRGcP7FB/zbaeIINfarkVRO+KfNVgXpjwIbb9BuM80AOZcSAVLI
6s7DtG5yaMLqLYAn+F3KO7n9VK8Ko+dPekCoeyMAXmSDDdaEYP0Hj6fdTeinVwbb
LbFwpL5NpdW7xxnj/kZF
-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-10T02:31:16+00:00

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

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