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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

TLS

crexendo.com · 184.178.213.43:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A00018A:SSL routines::dh key too small

Certificate verification failed

Subject
CN=*.crexendo.com
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=RapidSSL TLS RSA CA G1
Valid from
2026-02-18T00:00:00+00:00
Expires
2027-02-17T23:59:59+00:00
Days remaining
104
Serial (hex)
0F1C3CB33478733F0EB2FD9068F77EE8
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.crexendo.com, DNS:crexendo.com

SHA-256 fingerprint

3E:FC:F8:CE:9B:A9:8D:EE:C6:E0:FE:0A:1B:71:16:39:B8:34:55:12:7D:83:88:89:F5:A9:E1:A8:68:FA:4B:C5
Certificate extensions & PEM
authorityKeyIdentifier
0C:DB:6C:82:49:0F:4A:67:0A:B8:14:EE:7A:C4:48:52:88:EB:56:38
subjectKeyIdentifier
9B:B4:01:58:50:3B:94:4F:DF:48:39:71:74:68:B7:59:F1:57:87:2C
subjectAltName
DNS:*.crexendo.com, DNS:crexendo.com
certificatePolicies
Policy: 2.23.140.1.2.1 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://cdp.rapidssl.com/RapidSSLTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.rapidssl.com CA Issuers - URI:http://cacerts.rapidssl.com/RapidSSLTLSRSACAG1.crt
basicConstraints
CA:FALSE
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 : Feb 18 15:21:39.402 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:19:51:2F:79:19:EF:44:E8:35:E1:79:A5: 4B:51:57:9D:DF:12:EE:29:E2:84:5B:31:3A:43:2D:D6: E0:68:6E:13:02:20:18:F4:C6:A2:C5:68:8E:48:78:D5: F3:63:B9:B7:52:6D:8E:8D:8E:FA:E3:81:6F:24:17:7B: F5:5D:86:40:BC:2A Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Feb 18 15:21:39.381 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:68:FD:D5:EF:BB:C9:52:D4:CC:95:CB:E6: E0:A7:A5:36:C4:FF:3A:66:1E:FF:4D:C3:5A:74:A6:61: B4:FD:5F:B6:02:20:65:93:C4:32:55:07:E1:7E:E8:81: AA:FF:ED:8D:4B:0E:E5:A9:A0:72:31:93:92:E2:04:01: AD:68:4A:63:4F:3A Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Feb 18 15:21:39.628 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:7D:D0:BD:C7:6E:45:0F:E9:CE:D5:B2:BF: 9F:B1:3C:A8:49:26:23:22:62:3C:55:10:5E:D6:CE:52: A9:83:6B:C9:02:21:00:E0:77:02:50:D7:E4:5A:CF:0B: ED:52:AE:C4:D7:C1:BA:E5:76:E2:01:B7:F2:D9:8F:2E: 43:EB:CC:DD:05:18:71
-----BEGIN CERTIFICATE-----
MIIGHjCCBQagAwIBAgIQDxw8szR4cz8Osv2QaPd+6DANBgkqhkiG9w0BAQsFADBg
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
d3cuZGlnaWNlcnQuY29tMR8wHQYDVQQDExZSYXBpZFNTTCBUTFMgUlNBIENBIEcx
MB4XDTI2MDIxODAwMDAwMFoXDTI3MDIxNzIzNTk1OVowGTEXMBUGA1UEAwwOKi5j
cmV4ZW5kby5jb20wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDdbQTF
ke2uea5vmkjBrEX5L0XFma+hYLwJKSMN1P3Wq2shUvJWOhk1SfeFfA6KnJNfQ0TR
rvLMjnG+UZ0U1GvSVUAlNsOyf682PqHuALfWPNqy7ANaL3zdv8y7w/vU7MK4/IfF
8uOZSIuYMCv/vd6cwORG3rN3gDTGHE2C7xHrHS1CHFrNeDVaoiBgfLeqwh9kCnU1
UAABlnFq3/CMCp3XrFnjr1fM3mnHMgN1a44FCUJVhaYh50s1O3G/01+wCyBdo80w
niiHityrJ0Q/UqPvUjVDYIrBHVCz/wywwmcSN/IfBC1W2q8Elcdq4VW73PVLUags
xIcX/UKrkxhQW2vvAgMBAAGjggMZMIIDFTAfBgNVHSMEGDAWgBQM22yCSQ9KZwq4
FO56xEhSiOtWODAdBgNVHQ4EFgQUm7QBWFA7lE/fSDlxdGi3WfFXhywwJwYDVR0R
BCAwHoIOKi5jcmV4ZW5kby5jb22CDGNyZXhlbmRvLmNvbTA+BgNVHSAENzA1MDMG
BmeBDAECATApMCcGCCsGAQUFBwIBFhtodHRwOi8vd3d3LmRpZ2ljZXJ0LmNvbS9D
UFMwDgYDVR0PAQH/BAQDAgWgMBMGA1UdJQQMMAoGCCsGAQUFBwMBMD8GA1UdHwQ4
MDYwNKAyoDCGLmh0dHA6Ly9jZHAucmFwaWRzc2wuY29tL1JhcGlkU1NMVExTUlNB
Q0FHMS5jcmwwdgYIKwYBBQUHAQEEajBoMCYGCCsGAQUFBzABhhpodHRwOi8vc3Rh
dHVzLnJhcGlkc3NsLmNvbTA+BggrBgEFBQcwAoYyaHR0cDovL2NhY2VydHMucmFw
aWRzc2wuY29tL1JhcGlkU1NMVExTUlNBQ0FHMS5jcnQwDAYDVR0TAQH/BAIwADCC
AXwGCisGAQQB1nkCBAIEggFsBIIBaAFmAHUATGPcmOWcHauI9h6KPd6uj6tEozd7
X5uUw/uhnPzBviYAAAGccVe1SgAABAMARjBEAiAZUS95Ge9E6DXheaVLUVed3xLu
KeKEWzE6Qy3W4GhuEwIgGPTGosVojkh41fNjubdSbY6NjvrjgW8kF3v1XYZAvCoA
dQAcn2gs6frwRWlQ+BuWiofd2zIQ2EzmyLLjglJKxM9ZnwAAAZxxV7U1AAAEAwBG
MEQCIGj91e+7yVLUzJXL5uCnpTbE/zpmHv9Nw1p0pmG0/V+2AiBlk8QyVQfhfuiB
qv/tjUsO5amgcjGTkuIEAa1oSmNPOgB2AGBMmq96f3dfAdQG/JINyJnrCxx9+MlS
G/r6F3c7l4vJAAABnHFXtiwAAAQDAEcwRQIgfdC9x25FD+nO1bK/n7E8qEkmIyJi
PFUQXtbOUqmDa8kCIQDgdwJQ1+RazwvtUq7E18G65XbiAbfy2Y8uQ+vM3QUYcTAN
BgkqhkiG9w0BAQsFAAOCAQEAdLcLXJ+xoAlsobGJ5YqL4SynZjurQPqXlr0aSlmD
hynk8p35p+xQgxKlY7cLuU8/701WKCJ1ALIWTGSwHAIOZ1iJuID4fqSGIa8mMJQm
rmr+Uxg7QXqZUFwkNM3Zu7bpsVTLG1YF/EGE22EF75hpOkAhhAlK6AupVF5tTVle
AbBe2vBrCeqEkhxBTfUXEpvTEUgomf1LJyveJE6EQUL66DqbvFm4Ocx28PMEFhbF
YXIybnnh4XDn+pJvH8ffBWnK6Mn/nLym/o8VZyn/fYjN5oxWAeVCR2P6sRhRyhRq
mCN6tKNBqqZej86OgNWN2HOfwSsKHKNRSplwJ4dYrDfXAA==
-----END CERTIFICATE-----

Cipher: Unavailable · Checked 2026-11-05T05:17:41+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=RapidSSL TLS RSA CA G1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2017-11-02T12:24:33+00:00
Expires
2027-11-02T12:24:33+00:00
Days remaining
362
Serial (hex)
0B259422CED9812A15A04E99528A0EFA
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

44:22:E9:63:EE:53:CD:58:CC:9F:85:CD:40:BF:5F:FE:C0:09:5F:DF:1A:15:45:35:66:1C:1C:06:BC:AD:C6:9B
Certificate extensions & PEM
subjectKeyIdentifier
0C:DB:6C:82:49:0F:4A:67:0A:B8:14:EE:7A:C4:48:52:88:EB:56:38
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: 2.16.840.1.114412.1.1 CPS: https://www.digicert.com/CPS Policy: 2.16.840.1.114412.1.2 Policy: 2.23.140.1.2.1 Policy: 2.23.140.1.2.2
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2013-08-01T12:00:00+00:00
Expires
2038-01-15T12:00:00+00:00
Days remaining
4089
Serial (hex)
033AF1E6A711A9A0BB2864B11D09FAE5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

CB:3C:CB:B7:60:31:E5:E0:13:8F:8D:D3:9A:23:F9:DE:47:FF:C3:5E:43:C1:14:4C:EA:27:D4:6A:5A:B1:CB:5F
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Digital Signature, Certificate Sign, CRL Sign
subjectKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
-----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.

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