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

relcom.net · 193.124.23.5:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. Peer certificate subjectAltName did not match expected name `relcom.net'

Certificate verification failed

Subject
CN=mail.relcom.net
Issuer
C=US O=SSL Corporation CN=SSL.com TLS Issuing ECC CA R2
Valid from
2026-09-03T20:29:31+00:00
Expires
2027-03-20T20:33:41+00:00
Days remaining
162
Serial (hex)
1B4A791DA87F1DC1583B57754B1EF063
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

DNS:mail.relcom.net, DNS:www.mail.relcom.net

SHA-256 fingerprint

92:72:E9:25:D4:66:67:54:C0:FC:BE:31:66:2F:F3:2C:9D:60:28:C9:C9:A1:D2:6B:4E:00:81:93:A6:2B:5B:3D
Certificate extensions & PEM
basicConstraints
CA:FALSE
authorityKeyIdentifier
4E:B9:52:5A:B1:8F:7E:D6:30:53:43:E5:CA:5D:A2:04:8C:4C:14:F4
authorityInfoAccess
CA Issuers - URI:http://cert.ssl.com/SSL.com-TLS-I-ECC-R2.cer OCSP - URI:http://ocsps.ssl.com
subjectAltName
DNS:mail.relcom.net, DNS:www.mail.relcom.net
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.38064.1.3.1.1
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crls.ssl.com/SSL.com-TLS-I-ECC-R2.crl
subjectKeyIdentifier
21:C3:D3:D5:5A:8F:78:C3:B7:56:C6:A5:1B:29:D2:3B:1E:E8:9E:BC
keyUsage
Digital Signature
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 : Sep 3 20:39:32.809 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:82:E7:0A:4D:70:C6:50:88:FB:75:0E: 6C:98:B1:1E:57:4D:1F:20:9B:A5:68:E1:8E:64:58:2A: 41:0F:7B:FD:F4:02:21:00:B5:16:D6:18:F5:25:92:CE: 98:FC:0F:53:49:F3:A5:4E:C5:AC:D4:53:42:11:C5:A5: 35:EC:61:E8:69:F0:6E:5E Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D6:D5:8D:A9:D0:17:53:F3:6A:4A:A0:C7:57:49:02:AF: EB:C7:DC:2C:D3:8C:D9:F7:64:C8:0C:89:19:1E:9F:02 Timestamp : Sep 3 20:39:32.766 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:80:7F:79:CD:BF:EA:37:1D:8F:5B:53: 6C:25:2A:1C:2C:79:59:B5:FA:65:C4:01:1E:01:3C:98: DD:8A:C5:E9:EF:02:21:00:99:12:E8:4C:0D:20:88:81: D4:18:CB:87:9D:65:BD:E3:4D:00:A4:D7:AF:7A:8A:37: 2E:E4:19:2B:38:0C:57:B2 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 46:A2:39:67:C6:0D:B6:46:87:C6:6F:3D:F9:99:94:76: 93:A6:A6:11:20:84:57:D5:55:E7:E3:D0:A1:D9:B6:46 Timestamp : Sep 3 20:39:32.767 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:90:7F:00:D4:F7:8F:B2:2D:8B:31:61: 1F:A7:C6:05:48:81:ED:D7:B9:FE:8B:99:98:86:A8:8E: 53:09:A2:34:09:02:21:00:C0:FF:A4:B9:DC:71:9C:CC: DB:DA:96:6D:71:44:DC:EA:6A:40:8F:3A:05:35:0B:81: F8:54:1E:A4:A4:D8:F1:72
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-09T14:25:00+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=SSL Corporation CN=SSL.com TLS ECC Root CA 2022
Issuer
C=US O=SSL Corporation CN=SSL.com TLS ECC Root CA 2022
Valid from
2022-08-25T16:33:48+00:00
Expires
2046-08-19T16:33:47+00:00
Days remaining
7254
Serial (hex)
1403F5ABFB378B17405BE243B2A5D1C4
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C3:2F:FD:9F:46:F9:36:D1:6C:36:73:99:09:59:43:4B:9A:D6:0A:AF:BB:9E:7C:F3:36:54:F1:44:CC:1B:A1:43
Certificate extensions & PEM
basicConstraints
CA:TRUE
authorityKeyIdentifier
89:8F:2F:A3:E8:2B:A0:14:54:7B:F3:56:B8:26:5F:67:38:0B:9C:D0
subjectKeyIdentifier
89:8F:2F:A3:E8:2B:A0:14:54:7B:F3:56:B8:26:5F:67:38:0B:9C:D0
keyUsage
Digital Signature, Certificate Sign, CRL Sign
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=SSL Corporation CN=SSL.com TLS Issuing ECC CA R2
Issuer
C=US O=SSL Corporation CN=SSL.com TLS ECC Root CA 2022
Valid from
2022-10-21T17:01:46+00:00
Expires
2032-10-18T17:01:45+00:00
Days remaining
2201
Serial (hex)
5D7443B994D321F267F204F1844AC732
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

7F:3E:E6:36:62:36:ED:E6:C1:F7:C2:1C:44:3C:64:4D:32:15:3E:DA:A9:35:7C:3A:6D:A8:79:CD:F2:A6:B0:B6
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
authorityKeyIdentifier
89:8F:2F:A3:E8:2B:A0:14:54:7B:F3:56:B8:26:5F:67:38:0B:9C:D0
authorityInfoAccess
CA Issuers - URI:http://cert.ssl.com/SSLcom-TLS-Root-2022-ECC.cer
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.ssl.com/repository
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crls.ssl.com/SSLcom-TLS-Root-2022-ECC.crl
subjectKeyIdentifier
4E:B9:52:5A:B1:8F:7E:D6:30:53:43:E5:CA:5D:A2:04:8C:4C:14:F4
keyUsage
Digital Signature, Certificate Sign, CRL Sign
-----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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