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

slt.lk · 220.247.222.74:443

Verified

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

Subject
C=LK L=Colombo O=SRILANKA TELECOM PLC CN=*.slt.lk
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=GeoTrust TLS RSA CA G1
Valid from
2026-02-10T00:00:00+00:00
Expires
2027-03-07T23:59:59+00:00
Days remaining
166
Serial (hex)
0ADD4E9C44C17223732D179D5F05FE0A
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.slt.lk, DNS:slt.lk

SHA-256 fingerprint

92:20:D1:7F:6C:AC:6D:EC:08:BC:FA:C4:66:EB:1E:57:3D:63:28:C8:40:5F:70:67:1B:0C:0E:F7:4F:74:B4:15
Certificate extensions & PEM
authorityKeyIdentifier
94:4F:D4:5D:8B:E4:A4:E2:A6:80:FE:FD:D8:F9:00:EF:A3:BE:02:57
subjectKeyIdentifier
8E:98:0F:B8:5A:73:64:01:19:55:CC:2F:C3:DE:89:98:23:6A:CE:F2
subjectAltName
DNS:*.slt.lk, DNS:slt.lk
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://cdp.geotrust.com/GeoTrustTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.geotrust.com CA Issuers - URI:http://cacerts.geotrust.com/GeoTrustTLSRSACAG1.crt
basicConstraints
CA:FALSE
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 : Feb 10 06:09:19.387 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:61:AC:DD:19:42:8A:90:00:BE:92:8F:83: 99:E4:4F:D4:B2:DB:21:E8:45:82:84:84:39:A4:44:A3: F2:32:66:D0:02:21:00:AD:0F:75:E5:43:EF:47:06:E5: F1:FB:A6:2C:A7:4C:77:E3:CC:78:4B:97:C5:8F:EA:99: 93:96:CB:21:54:28:1E 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 : Feb 10 06:09:19.390 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:25:DE:EC:2A:74:41:43:2E:EC:88:21:18: 21:9C:B6:96:D2:D4:45:32:8E:AB:F0:FE:B7:32:A0:83: BB:29:AE:A3:02:20:65:96:E2:47:BD:61:18:51:B4:F4: 9C:4A:B8:2F:2D:9B:93:4E:08:4F:87:E0:AE:25:0C:A8: E9:44:74:7E:3B:BF Signed Certificate Timestamp: Version : v1 (0x0) Log ID : A2:81:00:18:73:4E:17:6E:1D:47:E0:95:40:F3:81:BA: 54:66:97:CD:63:A8:43:50:71:6E:B8:09:4E:DA:F1:0D Timestamp : Feb 10 06:09:19.550 2026 GMT Extensions: 00:00:05:00:02:57:E9:3E Signature : ecdsa-with-SHA256 30:45:02:21:00:8D:52:99:A3:D0:AE:20:10:94:66:65: FB:CE:10:C1:F7:01:AC:83:26:15:19:42:86:02:7E:54: D6:BD:5D:2F:5D:02:20:01:11:F4:64:2A:B6:B4:88:5D: E1:33:A4:54:28:FF:06:43:C5:AF:37:2F:2C:74:76:83: E3:69:63:E9:B5:99:69
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-09-22T08:13:56+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=GeoTrust TLS RSA CA G1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2017-11-02T12:23:37+00:00
Expires
2027-11-02T12:23:37+00:00
Days remaining
406
Serial (hex)
0D07782A133FC6F9A57296E131FFD179
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C0:6E:30:7F:7C:FC:1D:32:FA:72:A4:C0:33:C8:7B:90:01:9A:F2:16:F0:77:5D:64:97:8A:2E:CA:6C:8A:23:0E
Certificate extensions & PEM
subjectKeyIdentifier
94:4F:D4:5D:8B:E4:A4:E2:A6:80:FE:FD:D8:F9:00:EF:A3:BE:02:57
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.digicert.com/CPS
-----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.

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