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

gtstelecom.ro · 128.140.230.230:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. Peer certificate CN=`*.gts.ro' did not match expected CN=`gtstelecom.ro'

Certificate verification failed

Subject
CN=*.gts.ro
Issuer
C=US O=SSL Corporation CN=SSL.com TLS Issuing RSA CA R1
Valid from
2026-04-28T07:06:54+00:00
Expires
2026-11-13T07:06:37+00:00
Days remaining
51
Serial (hex)
45EFE90E9C43DAFD9C090FE863090D4B
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.gts.ro, DNS:gts.ro

SHA-256 fingerprint

49:71:A3:90:34:C2:94:2B:42:B6:B2:A5:89:10:38:76:AB:CC:EA:8F:FB:0E:4E:4E:3E:DB:7C:F5:33:D1:23:B1
Certificate extensions & PEM
basicConstraints
CA:FALSE
authorityKeyIdentifier
79:BA:94:77:A0:0D:19:DD:34:E6:39:A4:FC:4C:A5:D2:5A:6D:F5:8C
authorityInfoAccess
CA Issuers - URI:http://cert.ssl.com/SSL.com-TLS-I-RSA-R1.cer OCSP - URI:http://ocsps.ssl.com
subjectAltName
DNS:*.gts.ro, DNS:gts.ro
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.38064.1.3.1.1
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crls.ssl.com/SSL.com-TLS-I-RSA-R1.crl
subjectKeyIdentifier
98:6C:FC:17:89:23:C9:75:D1:08:7D:12:E5:8F:5A:BB:A2:21:F6:1A
keyUsage
Digital Signature, Key Encipherment
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E: F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7 Timestamp : Apr 28 07:16:56.049 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:9E:CB:06:3D:D6:80:06:86:3F:27:F9: C3:36:D9:19:C8:0D:F0:63:88:FA:AD:AB:5E:1C:60:30: FE:32:9F:8A:62:02:20:7F:50:2E:55:53:68:5B:CA:66: 39:56:3B:F7:FE:E4:1A:AF:C9:08:DD:B9:06:AF:A8:8E: 21:0A:A3:71:64:C0:F9 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 : Apr 28 07:16:56.042 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:A7:82:4B:98:F7:0E:A7:56:6D:EB:F9: 3D:FA:7B:35:E5:AA:C8:BA:03:B3:1D:67:A4:0F:33:9E: 05:7F:C5:E4:8C:02:20:68:3C:FE:D1:6C:E8:8E:AA:24: 71:6F:EF:D8:B9:0A:D4:C8:43:1C:3D:02:5A:81:85:7A: C6:49:B8:98:1D:10:3F Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : Apr 28 07:16:56.042 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:65:84:58:D2:BE:1E:FB:F6:AD:AE:91:57: C2:0B:5F:92:F7:2F:D6:35:0D:B8:76:C3:42:FA:D0:F7: 53:36:53:D1:02:21:00:F8:AA:A9:B4:E1:1C:F9:CA:36: 3E:E1:3F:04:2E:38:E4:09:DE:C8:D1:2B:34:0B:43:A9: 96:68:D2:E9:BA:E9:3E
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-09-23T03:41:53+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=SSL Corporation CN=SSL.com TLS Issuing RSA CA R1
Issuer
C=US O=SSL Corporation CN=SSL.com TLS RSA Root CA 2022
Valid from
2022-10-21T17:02:03+00:00
Expires
2032-10-18T17:02:02+00:00
Days remaining
2217
Serial (hex)
26B9FFE4596FA61E1AF21C63D672748A
Signature
RSA-SHA256
Public key
RSA 3072

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

BF:BC:39:E9:FA:2B:84:C9:A9:23:37:E2:34:4E:E2:38:1D:8D:3D:3A:E8:EA:75:EF:4E:48:E5:80:7E:D8:0C:69
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
authorityKeyIdentifier
FB:2E:37:EE:E3:84:7A:27:2E:CD:19:35:B1:33:7C:FF:D4:44:42:B9
authorityInfoAccess
CA Issuers - URI:http://cert.ssl.com/SSLcom-TLS-Root-2022-RSA.cer
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.ssl.com/repository
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crls.ssl.com/SSLcom-TLS-Root-2022-RSA.crl
subjectKeyIdentifier
79:BA:94:77:A0:0D:19:DD:34:E6:39:A4:FC:4C:A5:D2:5A:6D:F5:8C
keyUsage
Digital Signature, Certificate Sign, CRL Sign
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=SSL Corporation CN=SSL.com TLS RSA Root CA 2022
Issuer
C=GB ST=Greater Manchester L=Salford O=Comodo CA Limited CN=AAA Certificate Services
Valid from
2025-08-01T00:00:00+00:00
Expires
2028-12-31T23:59:59+00:00
Days remaining
830
Serial (hex)
FFB282F728319B62BAF4B84F0DFE9339
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

D6:DF:00:26:E5:93:9E:F0:8B:ED:AC:8C:58:38:F1:F0:A6:EF:A7:CA:D5:F6:B8:BB:80:AE:B2:55:DA:96:EB:B3
Certificate extensions & PEM
authorityKeyIdentifier
A0:11:0A:23:3E:96:F1:07:EC:E2:AF:29:EF:82:A5:7F:D0:30:A4:B4
subjectKeyIdentifier
FB:2E:37:EE:E3:84:7A:27:2E:CD:19:35:B1:33:7C:FF:D4:44:42:B9
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE, pathlen:2
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: 2.23.140.1.1 Policy: 2.23.140.1.2.1 Policy: 2.23.140.1.2.2 Policy: 2.23.140.1.2.3 Policy: 1.3.6.1.4.1.38064.1.3.1.1 Policy: 1.3.6.1.4.1.38064.1.3.1.2 Policy: 1.3.6.1.4.1.38064.1.3.1.3 Policy: 1.3.6.1.4.1.38064.1.3.1.4 Policy: 1.3.6.1.4.1.38064.1.3.1.5 Policy: 1.3.6.1.4.1.38064.1.3.1.6
crlDistributionPoints
Full Name: URI:http://crl.comodoca.com/AAACertificateServices.crl
authorityInfoAccess
OCSP - URI:http://ocsp.comodoca.com
-----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

Registration / WHOIS →DNS records →