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

granicus.com · 23.185.0.4:443

Verified

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

Subject
CN=about.govdelivery.com
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-08-30T14:07:44+00:00
Expires
2026-11-28T14:07:43+00:00
Days remaining
63
Serial (hex)
06AB0BD775F74B5D8D5FD55D9DF5103882E8
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:about.govdelivery.com, DNS:blog.visioninternet.com, DNS:civicasoft.com, DNS:direct.govdelivery.com, DNS:govdelivery.com, DNS:granicus.com, DNS:ilegislate.com, DNS:info.visioninternet.com, DNS:iqm2.com, DNS:legistar.com, DNS:novusolutions.com, DNS:southtechsystems.com, DNS:visioninternet.com, DNS:www.civicasoft.com, DNS:www.govdelivery.com, DNS:www.granicus.com, DNS:www.ilegislate.com, DNS:www.iqm2.com, DNS:www.legistar.com, DNS:www.novusolutions.com, DNS:www.visioninternet.com

SHA-256 fingerprint

F4:40:14:63:4F:9B:D6:48:31:5A:99:E5:05:01:FF:E4:0E:D9:5F:3A:5B:F1:98:C9:27:99:A9:DC:F7:DE:3F:AA
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
82:A2:6F:3D:56:4C:73:96:35:D8:22:5B:EE:7F:EB:85:37:C6:A2:78
authorityKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityInfoAccess
CA Issuers - URI:http://yr1.i.lencr.org/
subjectAltName
DNS:about.govdelivery.com, DNS:blog.visioninternet.com, DNS:civicasoft.com, DNS:direct.govdelivery.com, DNS:govdelivery.com, DNS:granicus.com, DNS:ilegislate.com, DNS:info.visioninternet.com, DNS:iqm2.com, DNS:legistar.com, DNS:novusolutions.com, DNS:southtechsystems.com, DNS:visioninternet.com, DNS:www.civicasoft.com, DNS:www.govdelivery.com, DNS:www.granicus.com, DNS:www.ilegislate.com, DNS:www.iqm2.com, DNS:www.legistar.com, DNS:www.novusolutions.com, DNS:www.visioninternet.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/105.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Aug 30 15:06:15.171 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:23:8F:1A:A8:51:16:F3:6E:FD:0B:B3:BF: 90:79:9C:EC:7D:E1:19:7D:19:67:40:04:94:E1:10:A8: C1:79:6E:A2:02:21:00:8F:CC:33:2F:ED:50:DA:69:FD: 91:2F:8C:7F:6A:8F:F2:5A:CA:74:AE:06:FD:57:C4:82: 3C:E9:12:D1:C4:99:E3 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1A:8B:9D:6B:0F:FE:BF:81:B4:79:39:C6:D2:31:0A:86: D6:D1:02:D4:F0:46:E2:18:2C:9D:E3:5F:5E:26:25:EF Timestamp : Aug 30 15:06:15.364 2026 GMT Extensions: 00:00:05:00:3A:5D:08:26 Signature : ecdsa-with-SHA256 30:45:02:21:00:B0:71:19:B0:00:46:A3:25:FB:DE:F8: BB:C4:84:11:2B:97:26:E7:6B:4F:03:EE:12:EE:41:50: A0:D9:29:C0:98:02:20:07:29:7E:7B:CD:2E:96:96:86: F9:1D:FD:B9:62:B3:E3:E2:00:BB:7C:5C:73:AA:73:B1: 8C:71:5D:12:BF:63:03
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-26T11:59:13+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR1
Issuer
C=US O=ISRG CN=Root YR
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
707
Serial (hex)
A20253F15F2691C05DC1CE13B9BCCA4E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:94:96:34:D9:9C:D6:FD:6A:A8:0B:C0:34:FE:FA:CC:EB:19:69:FE:EF:98:65:86:71:3E:CD:BB:05:75:8D:3F
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityInfoAccess
CA Issuers - URI:http://yr.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=ISRG CN=Root YR
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2026-05-13T00:00:00+00:00
Expires
2032-09-02T23:59:59+00:00
Days remaining
2168
Serial (hex)
F24B6D17F9D9AD7CB1C9FEA78782699F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

07:26:39:D0:B1:40:D5:BF:FA:E1:6A:D9:C3:F6:CC:60:86:04:06:21:F5:1E:E6:1A:6D:46:A8:91:5C:07:CF:76
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
authorityInfoAccess
CA Issuers - URI:http://x1.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/ 
-----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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