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

promenet.com · 173.254.109.82:443

Verified

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

Subject
CN=promenetnyc.com
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-09-04T08:13:18+00:00
Expires
2026-12-03T08:13:17+00:00
Days remaining
57
Serial (hex)
060D9A05F58E2286EFC16FBAF0B327D8DEB7
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:autoconfig.promenetnyc.com, DNS:autodiscover.promenetnyc.com, DNS:cpanel.promenetnyc.com, DNS:cpcalendars.promenetnyc.com, DNS:cpcontacts.promenetnyc.com, DNS:mail.promenetnyc.com, DNS:promenet.com, DNS:promenetnyc.com, DNS:webdisk.promenetnyc.com, DNS:webmail.promenetnyc.com, DNS:www.promenet.com, DNS:www.promenetnyc.com

SHA-256 fingerprint

42:AB:EA:BC:25:33:27:D5:21:9F:95:E5:11:89:3D:98:FE:FC:41:09:15:4A:87:10:BE:39:DA:7F:D1:B3:57:54
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
61:02:72:E8:2C:8D:71:FA:B7:C0:E1:AC:2B:77:EC:D0:C7:B2:1B:49
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:autoconfig.promenetnyc.com, DNS:autodiscover.promenetnyc.com, DNS:cpanel.promenetnyc.com, DNS:cpcalendars.promenetnyc.com, DNS:cpcontacts.promenetnyc.com, DNS:mail.promenetnyc.com, DNS:promenet.com, DNS:promenetnyc.com, DNS:webdisk.promenetnyc.com, DNS:webmail.promenetnyc.com, DNS:www.promenet.com, DNS:www.promenetnyc.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/56.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 : Sep 4 09:11:49.038 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:B1:F8:89:5A:26:AC:5A:0A:D4:3F:BA: 31:10:8D:0B:14:E9:F0:71:1A:49:0F:00:5A:A5:0F:D4: 7F:7A:82:E7:AA:02:21:00:DA:C0:5B:25:B6:8F:A5:A2: 1F:01:CD:FF:01:E3:D6:81:27:E9:24:02:10:6A:5F:79: 2B:30:F8:3A:6E:6D:C8:B9 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 6C:FE:50:19:43:A8:5E:A9:16:BC:52:D1:33:E4:DC:C9: 1E:F1:41:1C:7D:25:84:20:D1:73:80:9E:18:18:EB:3A Timestamp : Sep 4 09:11:50.032 2026 GMT Extensions: 00:00:05:00:2D:66:E9:1A Signature : ecdsa-with-SHA256 30:45:02:21:00:E2:51:BD:2E:3D:45:DB:58:3B:DA:11: 66:86:DA:80:4E:01:CE:A8:CF:BC:91:EB:6F:10:66:53: 6D:D5:61:D4:38:02:20:22:31:AC:2E:E8:6D:E5:92:1A: 59:A2:0E:3F:D7:B9:27:F3:67:54:7D:9B:9B:0D:55:93: 4E:8C:92:1A:21:C2:3A
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-07T02:00:47+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
696
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
2157
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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