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 subjectAltName did not match expected name `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
2026-10-29T09:05:59+00:00
Expires
2027-05-16T09:05:40+00:00
Days remaining
189
Serial (hex)
04CBA6938059B995309C7A2D2BA34E26
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

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

SHA-256 fingerprint

40:2E:07:B8:28:D7:20:A6:1F:B0:D8:CC:6C:3A:57:61:84:1A:C0:7E:40:EF:94:38:A0:8F:F6:23:42:BC:93:34
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 : 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 : Oct 29 09:16:00.777 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:6E:44:10:71:96:72:7F:CA:97:AF:8E:D3: F2:FE:B8:38:BE:C0:90:E6:D5:E0:2A:CB:63:B3:9F:A9: ED:14:31:4D:02:20:4C:FF:70:3A:3D:C6:91:6E:0F:02: 61:C6:C6:8A:0B:53:20:C7:7C:83:E7:82:50:49:48:D7: 48:A1:8B:DC:4E:6B Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 46:A2:39:67:C6:0D:B6:46:87:C6:6F:3D:F9:99:94:76: 93:A6:A6:11:20:84:57:D5:55:E7:E3:D0:A1:D9:B6:46 Timestamp : Oct 29 09:16:00.753 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:33:CF:DE:36:A8:B0:63:A7:92:8C:21:DE: 54:87:0E:6B:86:D6:0D:FA:EC:44:BE:BD:A4:81:51:F8: BA:47:41:B2:02:20:74:CB:AB:CF:84:A4:02:0C:93:6E: 3D:BB:B8:5D:A5:FD:AB:A6:9C:02:32:0F:42:1B:52:AC: DA:AE:5F:83:55:CA Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 00:1A:5D:1A:1C:2D:93:75:B6:48:55:78:F8:2F:71:A1: AE:6E:EF:39:7D:29:7C:8A:E3:15:7B:CA:DE:E1:A0:1E Timestamp : Oct 29 09:16:00.775 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:7E:FC:49:C9:62:91:57:A5:41:2E:8D:1F: 74:23:22:CD:1E:35:EF:3D:1D:C7:B6:44:8F:5E:FD:92: D7:A9:65:A5:02:20:65:B3:FD:BC:5A:80:7E:68:36:1F: 6B:B3:B6:2C:7E:BF:1C:05:1B:26:90:A8:3F:6F:B0:C7: 41:E7:67:9A:6E:5E
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-11-08T06:17:12+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
2171
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-----
MIIGAjCCA+qgAwIBAgIQJrn/5Flvph4a8hxj1nJ0ijANBgkqhkiG9w0BAQsFADBO
MQswCQYDVQQGEwJVUzEYMBYGA1UECgwPU1NMIENvcnBvcmF0aW9uMSUwIwYDVQQD
DBxTU0wuY29tIFRMUyBSU0EgUm9vdCBDQSAyMDIyMB4XDTIyMTAyMTE3MDIwM1oX
DTMyMTAxODE3MDIwMlowTzELMAkGA1UEBhMCVVMxGDAWBgNVBAoMD1NTTCBDb3Jw
b3JhdGlvbjEmMCQGA1UEAwwdU1NMLmNvbSBUTFMgSXNzdWluZyBSU0EgQ0EgUjEw
ggGiMA0GCSqGSIb3DQEBAQUAA4IBjwAwggGKAoIBgQCsGwIUQNo72SnktXL5DrWq
zRx7JO52R8ymc5bzpZWCPGfU6XcZUQQl4acAlpxbox7f8MSUjen+gCIf5GjN9JpX
XGrNdhoUuvnHDM/cONSJXx7PjVAuHXglktH5ZXpVw19hjRfUG2a+CZuOEgKnJzL/
0NGJtREtqfrNy6KyoDz0H/a9VidAb4AImHiZOLuRaCBZPn+9Ugj9TWTFTEfdvcX0
or8vFnGaFw1lt6pTrnkstQH9aqYBx+d4CDjVkNaITaoJLbG8HJo1lmZS+RZ2VZZT
Gn28Wg5DdNyplWxzBVMcv+zhu1EKIlqSGuvHnXor2iFRFjBy1bVdi7sR+Vou4PUa
w/EQH4vLRYHHM2rUv/Z5qHcjDxfF+CXHrejES0PaYaA/ELJufScN/IxikaIORWuB
IUrr34pcLj+bFTlyr5CWGFbJFJeWsz5CQFxR3JJa1mkzfHHZiE1JZgojzaLYzKxz
tH2IbivPnMmMlUhLtuIW7h1JNGNeBD9b7pGd+IXPzhsCAwEAAaOCAVkwggFVMBIG
A1UdEwEB/wQIMAYBAf8CAQAwHwYDVR0jBBgwFoAU+y437uOEeicuzRk1sTN8/9RE
QrkwTAYIKwYBBQUHAQEEQDA+MDwGCCsGAQUFBzAChjBodHRwOi8vY2VydC5zc2wu
Y29tL1NTTGNvbS1UTFMtUm9vdC0yMDIyLVJTQS5jZXIwPwYDVR0gBDgwNjA0BgRV
HSAAMCwwKgYIKwYBBQUHAgEWHmh0dHBzOi8vd3d3LnNzbC5jb20vcmVwb3NpdG9y
eTAdBgNVHSUEFjAUBggrBgEFBQcDAgYIKwYBBQUHAwEwQQYDVR0fBDowODA2oDSg
MoYwaHR0cDovL2NybHMuc3NsLmNvbS9TU0xjb20tVExTLVJvb3QtMjAyMi1SU0Eu
Y3JsMB0GA1UdDgQWBBR5upR3oA0Z3TTmOaT8TKXSWm31jDAOBgNVHQ8BAf8EBAMC
AYYwDQYJKoZIhvcNAQELBQADggIBAKZ9PtxW2JsKR/yncBvfHA05VtQ0kQEqCVSz
2A3X371wf2cI+/aTFaFauBguePcTdIPcYqo7FFJ9GHCc9lN6IY9UEFCUkjtAYJ/J
3FqaS80OGqdp8bqdbeg2vmpV6T8RNj1aaEjOYcOvlzhXp8sgxzEgvSaiUklnx4A4
8vPnVQ/c+QsJ7SsFd1nzSd/+FtAiPRKKJsjLp0EC147g6Z3KHj4ymdiz3wlO+aff
UyfOeqrP+DNcMf7QuuCcNAzYExX6tYxWXdvIs/+2QyH0s3bSnCVl30IIOrbiZlSS
qXQtKYv2/Yc/M1Ws0nTUmprWdexrxlkkh4X8v9mqiQvMMzsB/pTlHICJvu4bE6pd
GG8hqlTryml2tefaMbcPadQIlZfOOHEiTxfEEYghbj3dhi+B1cb1W6TfstH0iRnL
2BZqH1X2NB2XL27lwptGkK+Pi4/edbgY3ZQM4Ylbq+zewYOeUn493lM97h/IApNi
sM6R4N1o61PLnJ88AYKI5NfhhbZAHmDoadbzKwjchqkXfjXtTH57ADcqEw9lfQOg
tqhV11c7AAYo1uqJflCVwoEjkUb1P2381YCDDdnq78XOQWPLYccZoumvkAD5BXj1
+etEwNgrK21W5wi5ZCfJLHhAxUvNxRAwwUswhbVNY/9yxUltpaXsutug019GSlBI
iTZinEPk
-----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
784
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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lDR7Hn/CZgDkqoPqipCtzjZETdFR6bwf82oF/cB0HyUZQFFu6oJRQN+buQgqBgLV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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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