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

antispam1.concentus.net · 64.94.64.139:443

Verified

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

Subject
CN=antispam1.concentus.net
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication CA DV R36
Valid from
2026-09-23T00:00:00+00:00
Expires
2027-04-09T23:59:59+00:00
Days remaining
166
Serial (hex)
6FF1A1363D98106CA0FF43C8E4C2D681
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:antispam1.concentus.net, DNS:www.antispam1.concentus.net

SHA-256 fingerprint

55:8E:08:37:4A:00:A9:1F:50:BE:82:BF:5C:3D:1D:05:54:72:9C:36:DE:47:97:51:9A:EC:16:6F:0A:1F:EE:5B
Certificate extensions & PEM
authorityKeyIdentifier
68:C0:12:16:18:0E:AF:CE:F6:87:A6:32:57:A3:46:51:5D:CB:07:27
subjectKeyIdentifier
BA:CB:43:48:CD:C3:D4:E8:7C:0F:21:7E:40:7A:D7:F6:23:3B:45:08
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: 1.3.6.1.4.1.6449.1.2.2.7 CPS: https://sectigo.com/CPS Policy: 2.23.140.1.2.1
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoPublicServerAuthenticationCADVR36.crt OCSP - URI:http://ocsp.sectigo.com
subjectAltName
DNS:antispam1.concentus.net, DNS:www.antispam1.concentus.net
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 23 08:43:37.593 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:2D:70:4A:DB:DF:77:D0:0D:59:31:4F:E1: 1E:4E:4C:6B:AB:6F:9E:D6:63:98:56:0D:99:C2:4D:64: 73:29:F4:DB:02:21:00:9E:CF:D5:8F:28:D8:C0:CF:AE: 71:C4:5B:35:7A:9B:68:57:71:A7:F7:69:32:C9:AD:BC: EE:32:69:EB:37:69:D4 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1A:8B:9D:6B:8D:D7:91:D1:CD:05:49:ED:B6:03:55:D6: 06:B6:4F:AD:30:DB:71:FE:78:8F:0F:C7:C8:FB:C4:B1 Timestamp : Sep 23 08:43:37.824 2026 GMT Extensions: 00:00:05:00:04:7E:EB:8D Signature : ecdsa-with-SHA256 30:45:02:21:00:F8:E3:02:8B:95:C7:3E:4A:55:15:16: 7C:84:5A:4D:73:04:56:09:9F:DB:95:41:15:80:E4:45: 82:3A:D8:1F:BA:02:20:30:4A:40:A2:B0:0E:4E:45:E9: F8:63:70:E9:6A:94:6E:83:E2:B1:95:18:7D:05:F8:98: BB:FA:A3:3C:2F:F3:E5 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46: FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8 Timestamp : Sep 23 08:43:37.862 2026 GMT Extensions: 00:00:05:00:13:02:B6:1A Signature : ecdsa-with-SHA256 30:45:02:20:56:04:5F:09:2D:7E:B1:23:99:60:B4:90: E8:FD:C4:0E:AE:43:50:3C:D4:F4:5B:7D:5A:58:63:26: 71:55:D2:41:02:21:00:D0:A1:10:F3:9C:EE:A3:99:AC: 26:85:F6:41:96:0A:6F:8D:1D:D4:39:AA:17:84:1F:13: B2:CC:F0:88:BD:E2:09
-----BEGIN CERTIFICATE-----
MIIGtDCCBRygAwIBAgIQb/GhNj2YEGyg/0PI5MLWgTANBgkqhkiG9w0BAQsFADBg
MQswCQYDVQQGEwJHQjEYMBYGA1UEChMPU2VjdGlnbyBMaW1pdGVkMTcwNQYDVQQD
Ey5TZWN0aWdvIFB1YmxpYyBTZXJ2ZXIgQXV0aGVudGljYXRpb24gQ0EgRFYgUjM2
MB4XDTI2MDkyMzAwMDAwMFoXDTI3MDQwOTIzNTk1OVowIjEgMB4GA1UEAxMXYW50
aXNwYW0xLmNvbmNlbnR1cy5uZXQwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK
AoIBAQD0BZWy1CbdFvnvrLhu8NLyr0d7Ji1nLyc2yeGIbV4cQSgDHNy8Z3/yS2J4
5Ip61js/hZXxSRmlZhwMyK91gMZfmcVWhojaJJbQZCspDXFXv51kTx0dBWEGw1sX
JTpT7mmNxiVOfRBbO+dwhbT/0b+tYvvsA4NBkyhiYz1eEh0TWdsPjiEjgNEAhJOx
smZXhKkQ0p6ij4FssNg4QoXG8Yl3i/c5VxRQnI/gFanoN6tPxQd5QMLCSKy20Irc
MJMQD8fWsD1DHk1qf6E+4fGfnRiJfBPZHPoGxbFZZgD2vu3o0hxgRYMBrIVc5cc4
6/9HMxPimoXrsoib/Uvbovmu7aIJAgMBAAGjggMmMIIDIjAfBgNVHSMEGDAWgBRo
wBIWGA6vzvaHpjJXo0ZRXcsHJzAdBgNVHQ4EFgQUustDSM3D1Oh8DyF+QHrX9iM7
RQgwDgYDVR0PAQH/BAQDAgWgMAwGA1UdEwEB/wQCMAAwHQYDVR0lBBYwFAYIKwYB
BQUHAwEGCCsGAQUFBwMCMEkGA1UdIARCMEAwNAYLKwYBBAGyMQECAgcwJTAjBggr
BgEFBQcCARYXaHR0cHM6Ly9zZWN0aWdvLmNvbS9DUFMwCAYGZ4EMAQIBMIGEBggr
BgEFBQcBAQR4MHYwTwYIKwYBBQUHMAKGQ2h0dHA6Ly9jcnQuc2VjdGlnby5jb20v
U2VjdGlnb1B1YmxpY1NlcnZlckF1dGhlbnRpY2F0aW9uQ0FEVlIzNi5jcnQwIwYI
KwYBBQUHMAGGF2h0dHA6Ly9vY3NwLnNlY3RpZ28uY29tMD8GA1UdEQQ4MDaCF2Fu
dGlzcGFtMS5jb25jZW50dXMubmV0ght3d3cuYW50aXNwYW0xLmNvbmNlbnR1cy5u
ZXQwggGOBgorBgEEAdZ5AgQCBIIBfgSCAXoBeAB2AExj3JjlnB2riPYeij3ero+r
RKM3e1+blMP7oZz8wb4mAAABoM1vSPkAAAQDAEcwRQIgLXBK29930A1ZMU/hHk5M
a6tvntZjmFYNmcJNZHMp9NsCIQCez9WPKNjAz65xxFs1eptoV3Gn92kyya287jJp
6zdp1AB+ABqLnWuN15HRzQVJ7bYDVdYGtk+tMNtx/niPD8fI+8SxAAABoM1vSeAA
CAAABQAEfuuNBAMARzBFAiEA+OMCi5XHPkpVFRZ8hFpNcwRWCZ/blUEVgORFgjrY
H7oCIDBKQKKwDk5F6fhjcOlqlG6D4rGVGH0F+Ji7+qM8L/PlAH4AjspHC6zeavOi
BrCkeoS3Rv4fxr+VPiXmm07kAkjzxugAAAGgzW9KBgAIAAAFABMCthoEAwBHMEUC
IFYEXwktfrEjmWC0kOj9xA6uQ1A81PRbfVpYYyZxVdJBAiEA0KEQ85zuo5msJoX2
QZYKb40d1DmqF4QfE7LM8Ii94gkwDQYJKoZIhvcNAQELBQADggGBAIcmNcVfniQI
eAgyT1nvgO/OREGnCLk5djvD+jFMDSGPkU3l/HUxaTef4rQFSHJdQoD9pwuBUKNO
I9nJm4vaunqGgtz2fzGc5Lshi+jn56dXIPGZQdhjxaTKfBU/CoLB7zsB5YB9YNTJ
WyfaRv+sR3yKnQBgkUgzep1Lw4AuIcv+2Civ8ZNp7Uuc2mgPopRE/0wQwCf771Bu
/ZoZcHqjk5MHx5iX5MTSC2DVd8gL/tU3nQx2NUMv33bucVsGCeQi0nmigMzpl2YB
yYJqm3wH776Fz81vIcWf7ikoQNS+sDECBKrj6B1JQar/DsKiU7lIZmSunQ/gjTIJ
8YHeicltXuywcsATLdFG3DnmKY1VOkq83YiL3JOxwpE3khG7WG41z+fDf5tDytu4
1nePngkpOTjo7UvM/unRCx2JLkho0hO5IOfA5aNC/yD366RK90FhVj7JacSQc394
Y/PNRH6aPdnmN+jX9MfuVddEyT/Qzd92u/gx32i9JPeJTplcE9wIcQ==
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-25T09:43:21+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication CA DV R36
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication Root R46
Valid from
2021-03-22T00:00:00+00:00
Expires
2036-03-21T23:59:59+00:00
Days remaining
3435
Serial (hex)
397A66CC2756362E0DAA87CA6EABE3B1
Signature
RSA-SHA384
Public key
RSA 3072

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

8C:54:C3:34:B6:6B:A4:E4:26:77:2A:F4:A3:F9:13:6C:19:A1:AE:C7:29:FD:B2:8C:53:5C:07:A5:A4:EF:22:E0
Certificate extensions & PEM
authorityKeyIdentifier
56:73:58:64:95:F9:92:1A:B0:12:2A:04:62:79:A1:40:15:88:21:49
subjectKeyIdentifier
68:C0:12:16:18:0E:AF:CE:F6:87:A6:32:57:A3:46:51:5D:CB:07:27
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE, pathlen:0
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: X509v3 Any Policy Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://crl.sectigo.com/SectigoPublicServerAuthenticationRootR46.crl
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoPublicServerAuthenticationRootR46.p7c OCSP - URI:http://ocsp.sectigo.com
-----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

Registration / WHOIS →DNS records →