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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

TLSv1.3

regtime.net · 195.161.113.204:443

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
The certificate has expired.

Certificate verification failed

Subject
CN=regtime.net
Issuer
C=US O=Let's Encrypt CN=R3
Valid from
2023-08-01T11:56:34+00:00
Expires
2023-10-30T11:56:33+00:00
Days remaining
-1063
Serial (hex)
037F8738655AEE3C1D5BB1D91D06934000D4
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:reg.regtime.net, DNS:regtime.net, DNS:whois.regtime.net, DNS:www.regtime.net

SHA-256 fingerprint

F7:FC:DB:A8:BA:04:AB:D8:2C:32:B6:9F:FD:F6:4C:32:B8:77:79:67:DA:53:26:C6:F3:B5:25:F6:C5:C7:62:DF
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
99:68:3C:22:08:6D:5C:8E:38:86:92:B8:A4:63:6A:36:7A:EF:0A:9D
authorityKeyIdentifier
14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
authorityInfoAccess
OCSP - URI:http://r3.o.lencr.org CA Issuers - URI:http://r3.i.lencr.org/
subjectAltName
DNS:reg.regtime.net, DNS:regtime.net, DNS:whois.regtime.net, DNS:www.regtime.net
certificatePolicies
Policy: 2.23.140.1.2.1
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : B7:3E:FB:24:DF:9C:4D:BA:75:F2:39:C5:BA:58:F4:6C: 5D:FC:42:CF:7A:9F:35:C4:9E:1D:09:81:25:ED:B4:99 Timestamp : Aug 1 12:56:34.636 2023 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:B8:96:82:D8:E8:D6:48:80:24:D4:CB: F6:6F:60:15:EA:94:3C:B0:32:26:01:08:D9:5E:1D:77: 5C:96:02:22:1A:02:20:69:6B:39:45:FB:0C:5B:ED:1E: 94:48:00:2C:8F:B0:76:98:6F:07:32:95:1F:E5:D8:55: 95:61:E7:2F:0E:75:FE Signed Certificate Timestamp: Version : v1 (0x0) Log ID : E8:3E:D0:DA:3E:F5:06:35:32:E7:57:28:BC:89:6B:C9: 03:D3:CB:D1:11:6B:EC:EB:69:E1:77:7D:6D:06:BD:6E Timestamp : Aug 1 12:56:34.631 2023 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:5D:2F:D9:C2:E6:46:45:00:31:FD:EF:3F: 35:FD:BE:67:86:15:3B:4F:F2:7E:61:57:71:78:D0:DF: AF:14:CE:10:02:21:00:98:9A:F1:62:49:A8:68:9A:A3: 41:3B:5F:77:33:7C:9E:98:D0:AD:3B:7E:91:2C:5E:80: 9D:DE:6A:69:A1:33:26
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-27T09:05:43+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=R3
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2020-09-04T00:00:00+00:00
Expires
2025-09-15T16:00:00+00:00
Days remaining
-377
Serial (hex)
912B084ACF0C18A753F6D62E25A75F5A
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

67:AD:D1:16:6B:02:0A:E6:1B:8F:5F:C9:68:13:C0:4C:2A:A5:89:96:07:96:86:55:72:A3:C7:E7:37:61:3D:FD
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
authorityKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
authorityInfoAccess
CA Issuers - URI:http://x1.i.lencr.org/
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.44947.1.1.1
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=Internet Security Research Group CN=ISRG Root X1
Issuer
O=Digital Signature Trust Co. CN=DST Root CA X3
Valid from
2021-01-20T19:14:03+00:00
Expires
2024-09-30T18:14:03+00:00
Days remaining
-727
Serial (hex)
4001772137D4E942B8EE76AA3C640AB7
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

6D:99:FB:26:5E:B1:C5:B3:74:47:65:FC:BC:64:8F:3C:D8:E1:BF:FA:FD:C4:C2:F9:9B:9D:47:CF:7F:F1:C2:4F
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Certificate Sign, CRL Sign
authorityInfoAccess
CA Issuers - URI:http://apps.identrust.com/roots/dstrootcax3.p7c
authorityKeyIdentifier
C4:A7:B1:A4:7B:2C:71:FA:DB:E1:4B:90:75:FF:C4:15:60:85:89:10
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.44947.1.1.1 CPS: http://cps.root-x1.letsencrypt.org
crlDistributionPoints
Full Name: URI:http://crl.identrust.com/DSTROOTCAX3CRL.crl
subjectKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
-----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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