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

usp.br · 200.144.235.134:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
C=BR ST=SAO PAULO L=SAO PAULO O=UNIVERSIDADE DE SAO PAULO CN=*.usp.br
Issuer
C=BR O=REDE NACIONAL DE ENSINO E PESQUISA - RNP CN=RNP ICPEdu GR46 OV TLS CA 2025
Valid from
2026-09-14T15:21:41+00:00
Expires
2027-04-01T15:21:41+00:00
Days remaining
173
Serial (hex)
4A2ECDB8816C0D921EAE8D7E
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.usp.br, DNS:usp.br

SHA-256 fingerprint

F0:93:72:99:46:2B:77:E9:CD:E3:44:2F:F8:65:81:50:35:B8:FB:3A:C3:27:B1:7B:87:44:BE:75:0A:B5:54:E3
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
authorityInfoAccess
CA Issuers - URI:http://secure.globalsign.com/cacert/rnpicpedugr46ovtlsca2025.crt OCSP - URI:http://ocsp.globalsign.com/rnpicpedugr46ovtlsca2025
certificatePolicies
Policy: 2.23.140.1.2.2
subjectAltName
DNS:*.usp.br, DNS:usp.br
authorityKeyIdentifier
94:B0:C9:4F:C1:E0:6C:EF:CE:C6:2B:6C:B3:B4:CB:22:8A:76:49:B7
extendedKeyUsage
TLS Web Server Authentication
subjectKeyIdentifier
CE:A5:27:CF:36:61:D0:59:27:0D:B3:BB:CE:C0:F2:5A:F4:E5:68:6B
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 : Sep 14 15:21:44.815 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:E8:0E:BC:F3:76:E3:2C:7C:3A:3D:B5: 0B:2C:1A:6B:E9:52:1A:13:31:A2:0D:C2:25:98:D5:17: E0:E9:21:9D:1E:02:21:00:F5:DD:EB:2B:73:5B:72:1E: FB:C9:59:8F:64:4E:E8:AB:3F:25:1D:B9:3C:B6:D7:5A: BE:F7:57:D4:3D:1B:9D:8D Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F: AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26 Timestamp : Sep 14 15:21:43.958 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:72:E2:9E:A3:B8:2C:75:1C:57:D4:AD:88: 60:C9:D3:FD:1C:25:9E:88:0B:39:5F:E4:FE:D6:73:C6: B4:41:61:43:02:20:37:BF:E0:E4:35:F5:E0:70:1D:36: 52:CF:4E:40:58:CD:4B:90:03:35:2D:40:B5:B0:6C:53: 1F:09:67:85:6B:32 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Sep 14 15:21:44.444 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:8C:B0:21:33:24:DE:E7:7F:48:AE:B8: BC:D6:99:1B:1F:08:D7:03:B6:CC:AC:25:11:D5:DB:55: 96:4F:04:C2:45:02:20:29:CB:D4:2C:86:EA:C2:19:53: C0:EC:59:04:B2:0D:FB:00:2E:63:FA:1F:44:F0:FC:CE: BA:69:42:FB:9B:A6:35
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-10-09T16:27:38+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=BR O=REDE NACIONAL DE ENSINO E PESQUISA - RNP CN=RNP ICPEdu GR46 OV TLS CA 2025
Issuer
C=BE O=GlobalSign nv-sa CN=GlobalSign Root R46
Valid from
2025-11-19T03:27:55+00:00
Expires
2030-11-19T00:00:00+00:00
Days remaining
1501
Serial (hex)
84AC371369F2B3896C10759C657E0FD1
Signature
RSA-SHA384
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

E1:07:47:D4:DA:7B:AB:09:CB:A9:95:2F:01:9D:35:34:CB:9F:BA:07:0B:F1:3D:87:91:B1:69:9C:D2:FF:59:DD
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
94:B0:C9:4F:C1:E0:6C:EF:CE:C6:2B:6C:B3:B4:CB:22:8A:76:49:B7
authorityKeyIdentifier
03:5C:AB:73:81:87:A8:CC:B0:A6:D5:94:E2:36:96:49:FF:05:99:2C
authorityInfoAccess
OCSP - URI:http://ocsp.globalsign.com/rootr46 CA Issuers - URI:http://secure.globalsign.com/cacert/rootr46.crt
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/rootr46.crl
certificatePolicies
Policy: 2.23.140.1.2.2 Policy: 1.3.6.1.4.1.4146.10.1.2 Policy: 1.3.6.1.4.1.4146.1.20
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=BE O=GlobalSign nv-sa CN=GlobalSign Root R46
Issuer
OU=GlobalSign Root CA - R3 O=GlobalSign CN=GlobalSign
Valid from
2019-11-20T00:00:00+00:00
Expires
2029-03-18T00:00:00+00:00
Days remaining
890
Serial (hex)
75A8BAD878F8AF305F72DD1C1140DF3A
Signature
RSA-SHA384
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

A6:3C:13:98:B5:F8:DD:2D:43:2F:BE:4C:2C:19:14:2B:EA:6D:5D:02:21:FA:E7:94:71:8A:E7:59:7A:CC:A9:6D
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
subjectKeyIdentifier
03:5C:AB:73:81:87:A8:CC:B0:A6:D5:94:E2:36:96:49:FF:05:99:2C
authorityKeyIdentifier
8F:F0:4B:7F:A8:2E:45:24:AE:4D:50:FA:63:9A:8B:DE:E2:DD:1B:BC
authorityInfoAccess
OCSP - URI:http://ocsp2.globalsign.com/rootr3
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/root-r3.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.globalsign.com/repository/
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

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

View certificate JSON

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