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

mainone.net · 23.216.149.137:443

Verified
The certificate expires within 30 days.

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

Subject
C=US ST=California O=Equinix, Inc. CN=edgessl.equinix.com
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication CA OV E36
Valid from
2025-09-28T00:00:00+00:00
Expires
2026-09-28T23:59:59+00:00
Days remaining
6
Serial (hex)
8CD6D60402761E34639BC7E3664528B6
Signature
ecdsa-with-SHA256
Public key
EC 256 prime256v1

Subject alternative names (SAN)

DNS:edgessl.equinix.com, DNS:career.mainone.net, DNS:cdn.mainone.net, DNS:cptest.mainone.net, DNS:lg.mainonecable.com, DNS:mainone.net, DNS:portal.mainone.net, DNS:rptest.mainone.net, DNS:www.mainone.net

SHA-256 fingerprint

F4:E6:06:0F:24:A8:01:29:49:FF:D1:8F:23:7E:F7:AB:AC:5E:83:34:E7:10:F3:3E:DB:56:89:AC:1E:E5:A4:02
Certificate extensions & PEM
authorityKeyIdentifier
4C:38:7A:25:34:6B:FD:F9:8F:1A:60:1C:92:71:AA:67:F9:82:37:EB
subjectKeyIdentifier
37:30:E3:B0:77:07:86:8B:7A:C7:57:75:FD:6F:DB:9E:AD:FF:E0:C9
keyUsage
Digital Signature
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: 1.3.6.1.4.1.6449.1.2.1.3.4 CPS: https://sectigo.com/CPS Policy: 2.23.140.1.2.2
crlDistributionPoints
Full Name: URI:http://crl.sectigo.com/SectigoPublicServerAuthenticationCAOVE36.crl
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoPublicServerAuthenticationCAOVE36.crt OCSP - URI:http://ocsp.sectigo.com
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D8:09:55:3B:94:4F:7A:FF:C8:16:19:6F:94:4F:85:AB: B0:F8:FC:5E:87:55:26:0F:15:D1:2E:72:BB:45:4B:14 Timestamp : Sep 28 11:44:59.316 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:68:24:29:0B:9F:60:8A:38:5E:84:D7:BC: 66:F1:C5:CA:08:8A:27:1F:61:E7:A0:87:AF:B3:1E:6C: E2:71:1B:2C:02:21:00:89:12:71:56:32:BA:F1:D1:5B: F7:33:42:03:BB:E5:B3:96:9F:0D:47:C0:53:03:91:01: 4B:21:D0:1A:BD:F9:F3 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : AF:67:88:3B:57:B0:4E:DD:8F:A6:D9:7E:F6:2E:A8:EB: 81:0A:C7:71:60:F0:24:5E:55:D6:0C:2F:E7:85:87:3A Timestamp : Sep 28 11:44:59.436 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:B2:AA:08:9E:94:6D:A4:A2:91:94:26: C8:9B:E5:21:3A:A0:EF:4E:23:1C:1C:24:A5:35:C8:44: B2:16:C0:80:5D:02:21:00:D5:0F:EF:28:CE:93:E2:9C: DE:65:AF:E4:16:CA:B0:67:01:B8:50:06:52:9B:EF:D6: CC:E4:96:BF:0C:46:E0:62 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 : Sep 28 11:44:59.216 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:88:66:0A:71:78:F0:48:1D:4C:B2:41: EF:52:68:F2:F2:23:8C:D6:CC:A5:D8:87:BE:99:21:45: B3:5D:13:6E:C4:02:20:63:F2:E9:D1:5C:1A:9E:5D:A0: EB:0C:61:FA:12:D2:4C:D0:BB:E5:5C:35:ED:7C:EC:9B: 0F:70:9F:2E:7A:1C:C9
subjectAltName
DNS:edgessl.equinix.com, DNS:career.mainone.net, DNS:cdn.mainone.net, DNS:cptest.mainone.net, DNS:lg.mainonecable.com, DNS:mainone.net, DNS:portal.mainone.net, DNS:rptest.mainone.net, DNS:www.mainone.net
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-22T10:26:57+00:00

Server-presented chain · 3 additional certificates

Chain certificate 1

Subject
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication CA OV E36
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication Root E46
Valid from
2021-03-22T00:00:00+00:00
Expires
2036-03-21T23:59:59+00:00
Days remaining
3468
Serial (hex)
12B0648BE8E2B91074216C1DAE9C5795
Signature
ecdsa-with-SHA384
Public key
EC 256 prime256v1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

41:02:BB:08:B7:EA:19:E5:67:EB:67:10:38:4C:54:0A:FD:AD:99:3A:F0:D9:DF:BF:91:CA:62:73:75:5B:8B:A0
Certificate extensions & PEM
authorityKeyIdentifier
D1:22:DA:4C:59:F1:4B:5F:26:38:AA:9D:D6:EE:EB:0D:C3:FB:A9:61
subjectKeyIdentifier
4C:38:7A:25:34:6B:FD:F9:8F:1A:60:1C:92:71:AA:67:F9:82:37:EB
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: 2.23.140.1.2.2
crlDistributionPoints
Full Name: URI:http://crl.sectigo.com/SectigoPublicServerAuthenticationRootE46.crl
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoPublicServerAuthenticationRootE46.p7c OCSP - URI:http://ocsp.sectigo.com
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication Root E46
Issuer
C=US ST=New Jersey L=Jersey City O=The USERTRUST Network CN=USERTrust ECC Certification Authority
Valid from
2021-03-22T00:00:00+00:00
Expires
2038-01-18T23:59:59+00:00
Days remaining
4136
Serial (hex)
1A9EAFEC6DE8E19B5C193141B68D90DD
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

EA:6B:89:ED:69:07:A2:09:FF:91:88:67:6F:B1:64:E7:AC:ED:89:4B:89:96:DF:BE:5C:E5:BB:CC:22:DE:4D:DD
Certificate extensions & PEM
authorityKeyIdentifier
3A:E1:09:86:D4:CF:19:C2:96:76:74:49:76:DC:E0:35:C6:63:63:9A
subjectKeyIdentifier
D1:22:DA:4C:59:F1:4B:5F:26:38:AA:9D:D6:EE:EB:0D:C3:FB:A9:61
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: X509v3 Any Policy
crlDistributionPoints
Full Name: URI:http://crl.usertrust.com/USERTrustECCCertificationAuthority.crl
authorityInfoAccess
OCSP - URI:http://ocsp.usertrust.com
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 3

Subject
C=US ST=New Jersey L=Jersey City O=The USERTRUST Network CN=USERTrust ECC Certification Authority
Issuer
C=US ST=New Jersey L=Jersey City O=The USERTRUST Network CN=USERTrust ECC Certification Authority
Valid from
2010-02-01T00:00:00+00:00
Expires
2038-01-18T23:59:59+00:00
Days remaining
4136
Serial (hex)
5C8B99C55A94C5D27156DECD8980CC26
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

4F:F4:60:D5:4B:9C:86:DA:BF:BC:FC:57:12:E0:40:0D:2B:ED:3F:BC:4D:4F:BD:AA:86:E0:6A:DC:D2:A9:AD:7A
Certificate extensions & PEM
subjectKeyIdentifier
3A:E1:09:86:D4:CF:19:C2:96:76:74:49:76:DC:E0:35:C6:63:63:9A
keyUsage
Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
-----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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