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

turkcell.com.tr · 176.235.24.51:443

Verified

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

Subject
C=TR ST=İSTANBUL L=MALTEPE O=TURKCELL İLETİŞİM HİZMETLERİ A.Ş. CN=*.turkcell.com.tr
Issuer
C=BE O=GlobalSign nv-sa CN=GlobalSign RSA OV SSL CA 2018
Valid from
2026-03-09T14:57:08+00:00
Expires
2027-04-10T14:55:43+00:00
Days remaining
198
Serial (hex)
1219075E4E1F15B9B3C4C20D
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.turkcell.com.tr, DNS:turkcell.com.tr

SHA-256 fingerprint

3F:C8:73:5F:5F:CE:0F:EB:B0:DF:2E:B8:5B:FE:C7:32:06:8F:BA:26:22:CB:BA:1E:1E:AF:C7:A3:F4:34:43:40
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
authorityInfoAccess
CA Issuers - URI:http://secure.globalsign.com/cacert/gsrsaovsslca2018.crt OCSP - URI:http://ocsp.globalsign.com/gsrsaovsslca2018
certificatePolicies
Policy: 1.3.6.1.4.1.4146.1.20 CPS: https://www.globalsign.com/repository/ Policy: 2.23.140.1.2.2
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/gsrsaovsslca2018.crl
subjectAltName
DNS:*.turkcell.com.tr, DNS:turkcell.com.tr
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityKeyIdentifier
F8:EF:7F:F2:CD:78:67:A8:DE:6F:8F:24:8D:88:F1:87:03:02:B3:EB
subjectKeyIdentifier
AA:6E:4C:19:2A:97:FB:A4:29:75:79:29:50:60:30:14:66:3A:0F:4E
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 : Mar 9 14:57:12.150 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:9C:FF:BA:31:AB:27:BB:B5:17:49:C3: B2:D1:5A:69:23:E9:F0:0D:6A:5A:79:CE:9F:FB:8F:FB: FB:D2:AB:D1:68:02:21:00:87:E5:67:C1:96:E4:4C:3E: 53:8F:9E:30:D2:E2:CF:16:27:C8:47:C3:28:20:21:04: 46:88:E7:8D:7D:6F:E0:94 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 : Mar 9 14:57:11.186 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:30:5C:B1:AC:89:56:7E:65:A8:B5:CD:85: 20:17:28:BC:BF:A6:43:FE:2C:D8:9B:70:C9:77:08:86: A9:C7:80:3D:02:21:00:A8:C1:B7:12:A6:7E:97:F0:5E: 85:6B:12:9A:81:93:38:E9:7E:76:65:F9:8B:BA:91:0C: F3:33:7D:B1:04:A6:AB 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 : Mar 9 14:57:12.131 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:2D:6A:41:CC:73:81:87:3B:BF:A4:74:20: D9:5E:DB:A0:91:AB:E5:D9:51:A1:B8:F9:2E:46:F2:50: DD:48:FB:12:02:21:00:A3:32:52:AF:C6:CF:17:B6:32: 35:84:99:B4:74:D9:C5:93:70:AA:9D:A2:0B:C5:6F:AD: 86:BD:6C:92:68:B8:41
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-23T15:23:23+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=BE O=GlobalSign nv-sa CN=GlobalSign RSA OV SSL CA 2018
Issuer
OU=GlobalSign Root CA - R3 O=GlobalSign CN=GlobalSign
Valid from
2018-11-21T00:00:00+00:00
Expires
2028-11-21T00:00:00+00:00
Days remaining
789
Serial (hex)
01EE5F221DFC623BD4333A8557
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

B6:76:FF:A3:17:9E:88:12:09:3A:1B:5E:AF:EE:87:6A:E7:A6:AA:F2:31:07:8D:AD:1B:FB:21:CD:28:93:76:4A
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
F8:EF:7F:F2:CD:78:67:A8:DE:6F:8F:24:8D:88:F1:87:03:02:B3:EB
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-----

Chain certificate 2

Subject
OU=GlobalSign Root CA - R3 O=GlobalSign CN=GlobalSign
Issuer
OU=GlobalSign Root CA - R3 O=GlobalSign CN=GlobalSign
Valid from
2009-03-18T10:00:00+00:00
Expires
2029-03-18T10:00:00+00:00
Days remaining
906
Serial (hex)
04000000000121585308A2
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

CB:B5:22:D7:B7:F1:27:AD:6A:01:13:86:5B:DF:1C:D4:10:2E:7D:07:59:AF:63:5A:7C:F4:72:0D:C9:63:C5:3B
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
subjectKeyIdentifier
8F:F0:4B:7F:A8:2E:45:24:AE:4D:50:FA:63:9A:8B:DE:E2:DD:1B:BC
-----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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