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

TLSv1.3

adnettelecom.ro · 185.193.52.213:443

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=*.adnettelecom.ro
Issuer
C=US O=Let's Encrypt CN=R13
Valid from
2026-05-04T13:49:53+00:00
Expires
2026-08-02T13:49:52+00:00
Days remaining
-54
Serial (hex)
065A2088E21434F7DE3F40DCCF6D0EDBACC3
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.adnettelecom.ro, DNS:adnettelecom.ro

SHA-256 fingerprint

52:5D:7E:A7:8C:23:2E:3B:9A:50:CA:2B:94:10:CC:DC:11:1B:15:28:7A:17:9A:F6:3B:5D:FA:2C:ED:4E:DF:D8
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
48:89:2A:29:F7:42:89:46:99:3D:80:7F:45:BE:69:18:EA:4D:9C:20
authorityKeyIdentifier
E7:AB:9F:0F:2C:33:A0:53:D3:5E:4F:78:C8:B2:84:0E:3B:D6:92:33
authorityInfoAccess
CA Issuers - URI:http://r13.i.lencr.org/
subjectAltName
DNS:*.adnettelecom.ro, DNS:adnettelecom.ro
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://r13.c.lencr.org/68.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C8:A3:C4:7F:C7:B3:AD:B9:35:6B:01:3F:6A:7A:12:6D: E3:3A:4E:43:A5:C6:46:F9:97:AD:39:75:99:1D:CF:9A Timestamp : May 4 14:48:24.218 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:39:E0:53:FD:CC:D4:F2:80:60:F4:B2:97: 29:1A:DD:CE:1A:1F:76:76:A8:4C:06:D2:43:C7:E9:57: 72:F4:6D:C4:02:20:2B:44:20:B0:08:B0:54:98:77:2C: 8B:C6:A5:1C:D7:31:EB:8B:63:64:0D:80:4A:56:84:C5: 12:1E:D6:A7:4C:BA Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 6C:FE:50:19:43:A8:5E:A9:16:BC:52:D1:33:E4:DC:C9: 1E:F1:41:1C:7D:25:84:20:D1:73:80:9E:18:18:EB:3A Timestamp : May 4 14:48:25.151 2026 GMT Extensions: 00:00:05:00:09:FD:89:5B Signature : ecdsa-with-SHA256 30:44:02:20:43:79:7F:74:D2:3E:96:88:88:BA:A2:D1: CB:28:7E:F5:B7:C9:41:0E:C2:15:4F:4C:10:28:E3:F1: FD:D9:02:4A:02:20:4F:57:22:EB:DE:C4:98:4F:17:45: A8:C4:1E:90:68:20:B2:F1:66:3B:81:85:EE:10:42:B8: 82:30:50:4C:06:CE
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-25T00:22:01+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=R13
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2024-03-13T00:00:00+00:00
Expires
2027-03-12T23:59:59+00:00
Days remaining
168
Serial (hex)
5A00F212D8D4B480F3924157EA298305
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

D3:B1:28:21:6A:84:3F:8E:F1:32:15:01:F5:DF:52:A5:DF:52:93:9E:E2:C1:92:97:71:2C:D3:DE:4D:41:93:54
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
E7:AB:9F:0F:2C:33:A0:53:D3:5E:4F:78:C8:B2:84:0E:3B:D6:92:33
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/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/ 
-----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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