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

greenmountainpower.com · 141.193.213.21:443

Verified

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

Subject
CN=*.greenmountainpower.com
Issuer
C=US ST=Arizona L=Scottsdale O=GoDaddy.com, Inc. OU=http://certs.godaddy.com/repository/ CN=Go Daddy Secure Certificate Authority - G2
Valid from
2025-11-01T18:24:54+00:00
Expires
2026-12-03T18:24:54+00:00
Days remaining
59
Serial (hex)
31CD56CCE174F177
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.greenmountainpower.com, DNS:greenmountainpower.com

SHA-256 fingerprint

44:EB:1C:DE:59:77:FD:07:95:40:65:57:BE:22:0E:90:D9:BD:1D:EE:9C:30:85:A0:D3:94:F4:75:01:99:C5:7D
Certificate extensions & PEM
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
keyUsage
Digital Signature, Key Encipherment
crlDistributionPoints
Full Name: URI:http://crl.godaddy.com/gdig2s1-67319.crl
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 2.16.840.1.114413.1.7.23.1 CPS: http://certificates.godaddy.com/repository/
authorityInfoAccess
OCSP - URI:http://ocsp.godaddy.com/ CA Issuers - URI:http://certificates.godaddy.com/repository/gdig2.crt
authorityKeyIdentifier
40:C2:BD:27:8E:CC:34:83:30:A2:33:D7:FB:6C:B3:F0:B4:2C:80:CE
subjectAltName
DNS:*.greenmountainpower.com, DNS:greenmountainpower.com
subjectKeyIdentifier
A7:B6:AC:6C:93:9F:6B:92:EE:18:7F:F2:94:20:9A:19:3B:EA:0A:8A
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : Nov 1 18:24:55.302 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:84:75:B5:FD:57:DD:51:CA:A4:DE:A3: E9:24:94:DA:68:8A:66:2A:EA:9A:99:1C:72:6C:D3:8B: C9:3E:91:86:23:02:20:63:DC:64:9A:25:F8:E0:42:70: 48:4A:C3:72:E8:BD:5B:97:A6:3B:15:AE:4D:16:43:89: 88:2E:6C:83:AA:68:46 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 : Nov 1 18:24:55.585 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:23:7D:8C:38:A9:DB:60:81:8A:CD:57:39: 87:BB:E6:89:3D:C2:9A:AE:63:9C:0B:5F:5E:16:A0:AB: 30:06:B8:4C:02:21:00:F6:25:5C:11:68:E4:20:27:C5: 4E:40:80:2C:0C:32:0E:19:EC:7A:63:8D:FC:96:80:CD: 7E:34:3D:9C:86:22:B6 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : AC:AB:30:70:6C:EB:EC:84:31:F4:13:D2:F4:91:5F:11: 1E:42:24:43:B1:F2:A6:8C:4F:3C:2B:3B:A7:1E:02:C3 Timestamp : Nov 1 18:24:55.756 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:44:9F:8D:23:C0:E4:31:4E:E2:D8:08:4B: 92:38:49:BA:CF:C8:EE:AA:58:83:5C:BC:9A:8A:E2:2C: FA:67:3C:D6:02:20:1C:00:C9:EA:5B:51:2A:F2:7B:CA: D9:20:7A:AC:FC:15:2E:5C:49:1E:4D:F6:40:89:96:E3: A0:4C:16:9D:8D:08
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-05T13:26:42+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US ST=Arizona L=Scottsdale O=GoDaddy.com, Inc. OU=http://certs.godaddy.com/repository/ CN=Go Daddy Secure Certificate Authority - G2
Issuer
C=US ST=Arizona L=Scottsdale O=GoDaddy.com, Inc. CN=Go Daddy Root Certificate Authority - G2
Valid from
2011-05-03T07:00:00+00:00
Expires
2031-05-03T07:00:00+00:00
Days remaining
1670
Serial (hex)
07
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

97:3A:41:27:6F:FD:01:E0:27:A2:AA:D4:9E:34:C3:78:46:D3:E9:76:FF:6A:62:0B:67:12:E3:38:32:04:1A:A6
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Certificate Sign, CRL Sign
subjectKeyIdentifier
40:C2:BD:27:8E:CC:34:83:30:A2:33:D7:FB:6C:B3:F0:B4:2C:80:CE
authorityKeyIdentifier
3A:9A:85:07:10:67:28:B6:EF:F6:BD:05:41:6E:20:C1:94:DA:0F:DE
authorityInfoAccess
OCSP - URI:http://ocsp.godaddy.com/
crlDistributionPoints
Full Name: URI:http://crl.godaddy.com/gdroot-g2.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://certs.godaddy.com/repository/
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US ST=Arizona L=Scottsdale O=GoDaddy.com, Inc. CN=Go Daddy Root Certificate Authority - G2
Issuer
C=US O=The Go Daddy Group, Inc. OU=Go Daddy Class 2 Certification Authority
Valid from
2014-01-01T07:00:00+00:00
Expires
2031-05-30T07:00:00+00:00
Days remaining
1697
Serial (hex)
1BE715
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

3A:2F:BE:92:89:1E:57:FE:05:D5:70:87:F4:8E:73:0F:17:E5:A5:F5:3E:F4:03:D6:18:E5:B7:4D:7A:7E:6E:CB
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Certificate Sign, CRL Sign
subjectKeyIdentifier
3A:9A:85:07:10:67:28:B6:EF:F6:BD:05:41:6E:20:C1:94:DA:0F:DE
authorityKeyIdentifier
D2:C4:B0:D2:91:D4:4C:11:71:B3:61:CB:3D:A1:FE:DD:A8:6A:D4:E3
authorityInfoAccess
OCSP - URI:http://ocsp.godaddy.com/
crlDistributionPoints
Full Name: URI:http://crl.godaddy.com/gdroot.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://certs.godaddy.com/repository/
-----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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