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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

nyc.gov · 157.188.15.121:443

Verified

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

Subject
C=US ST=New York L=Brooklyn O=Office of Technology and Innovation, New York City CN=*.nyc.gov
Issuer
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid from
2026-02-05T00:00:00+00:00
Expires
2027-03-08T23:59:59+00:00
Days remaining
163
Serial (hex)
031D237C2480613ADD80C3F0D9D2C63F
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.nyc.gov, DNS:nyc.gov

SHA-256 fingerprint

2B:C4:1B:67:22:83:9A:3A:23:F3:F2:0B:86:05:08:D0:68:BD:71:2B:BE:05:5D:DA:89:C2:AA:46:8F:15:5A:A3
Certificate extensions & PEM
authorityKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
subjectKeyIdentifier
52:E8:19:A6:3A:A7:3D:CA:78:9D:63:6F:66:0F:D9:5B:73:AE:3A:11
subjectAltName
DNS:*.nyc.gov, DNS:nyc.gov
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.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 5 00:25:03.887 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:7B:19:C7:F3:3D:AE:CB:88:FF:B0:0E:99: 1B:32:D3:EA:FF:6D:C6:AC:32:1F:34:14:D4:B5:BF:E1: C9:6B:10:65:02:20:40:4A:96:3E:70:8B:74:BF:AC:56: 92:51:99:1A:E5:D7:D9:DA:6B:9D:0D:28:F2:29:75:B0: CA:5A:95:35:D9:77 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 5 00:25:03.889 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:20:DB:3B:94:D5:16:FF:10:E2:F0:6B:4F: 43:41:95:29:2F:74:1B:CF:11:5A:6C:64:33:E7:62:1B: 0A:80:15:1F:02:21:00:F6:2A:8B:32:DC:8B:48:20:8B: 3D:52:2B:CE:84:4F:91:E5:34:82:83:03:BC:66:8F:90: 8F:45:CF:73:63:01:28 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 : Feb 5 00:25:04.128 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:D2:49:BE:86:81:52:9E:BA:0A:DB:F2: 6C:86:36:4D:F1:3F:51:DE:1E:7B:8E:42:91:16:A8:25: B6:EB:33:05:7D:02:20:1E:F1:1A:7F:9F:B0:D7:AD:85: DD:F7:21:E1:E5:82:B2:3F:C3:F6:8F:43:3C:82:28:D3: AD:86:39:F3:F9:F2:E2
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-26T18:30:41+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2021-03-30T00:00:00+00:00
Expires
2031-03-29T23:59:59+00:00
Days remaining
1645
Serial (hex)
0CF5BD062B5602F47AB8502C23CCF066
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C8:02:5F:9F:C6:5F:DF:C9:5B:3C:A8:CC:78:67:B9:A5:87:B5:27:79:73:95:79:17:46:3F:C8:13:D0:B6:25:A9
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
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
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalRootG2.crt
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: 2.16.840.1.114412.2.1 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
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2013-08-01T12:00:00+00:00
Expires
2038-01-15T12:00:00+00:00
Days remaining
4128
Serial (hex)
033AF1E6A711A9A0BB2864B11D09FAE5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

CB:3C:CB:B7:60:31:E5:E0:13:8F:8D:D3:9A:23:F9:DE:47:FF:C3:5E:43:C1:14:4C:EA:27:D4:6A:5A:B1:CB:5F
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Digital Signature, Certificate Sign, CRL Sign
subjectKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
-----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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