TCS Server Certificates

This page lists certificates of certification authorities providing the CESNET TCS service.


RSA Certificates


HARICA TLS RSA Root CA 2021 (root certificate)

CA Name C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS RSA Root CA 2021
Issuer C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS RSA Root CA 2021
Valid from 19th February 2021
Valid to 13th February 2045
Serial Number 39:ca:93:1c:ef:43:f3:c6:8e:93:c7:f4:64:89:38:7e
SHA1 Hash 02:2d:05:82:fa:88:ce:14:0c:06:79:de:7f:14:10:e9:45:d7:a5:6d
SHA256 Hash d9:5d:0e:8e:da:79:52:5b:f9:be:b1:1b:14:d2:10:0d:32:94:98:5f:0c:62:d9:fa:bd:9c:d9:99:ec:cb:7b:1d
CA Certificate Install (DER) — Download (PEM) — Info (TXT)
Current CRL Download (crl.harica.gr)


GEANT TLS RSA 1 (intermediate certificate)

CA Name C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1
Issuer C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS RSA Root CA 2021
Valid from 3rd January 2025
Valid to 31st December 2039
Serial Number 14:d5:7b:f3:69:22:28:21:9a:55:67:fa:91:65:1b:22
SHA1 Hash be:7f:0b:36:f8:8a:22:dd:de:d3:62:db:9a:f7:9c:8e:65:82:b9:19
SHA256 Hash 5b:67:8d:c4:40:95:a5:28:95:b6:3b:31:f2:72:27:f4:b3:6c:3e:34:74:91:bf:2b:fa:69:18:37:a5:fb:8c:79
CA Certificate Install (DER) — Download (PEM) — Info (TXT)
Current CRL Download (crl.harica.gr)


ECC Certificates


HARICA TLS ECC Root CA 2021 (root certificate)

CA Name C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS RSA Root CA 2021
Issuer C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS ECC Root CA 2021
Valid from 19th February 2021
Valid to 13th February 2045
Serial number 67:74:9d:8d:77:d8:3b:6a:db:22:f4:ff:59:e2:bf:ce
SHA1 Hash bc:b0:c1:9d:e9:98:92:70:19:38:57:e9:8d:a7:b4:5d:6e:ee:01:48
SHA256 Hash 3f:99:cc:47:4a:cf:ce:4d:fe:d5:87:94:66:5e:47:8d:15:47:73:9f:2e:78:0f:1b:b4:ca:9b:13:30:97:d4:01
CA Certificate Install (DER) — Download (PEM) — Info (TXT)
Current CRL Download (crl.harica.gr)


GEANT TLS ECC 1 (intermediate certificate)

CA Name C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS ECC 1
Issuer C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS ECC Root CA 2021
Valid from 3rd January 2025
Valid to 31st December 2039
Serial number 42:fd:dc:e1:26:16:07:e1:a5:e6:93:5a:40:01:61:dd
SHA1 Hash cc:73:33:46:67:05:f1:43:be:7d:76:dd:b8:e7:74:40:7a:3d:91:c8
SHA256 Hash 6c:df:0b:a1:71:1e:85:6d:22:8b:a0:0c:a0:4c:5c:1c:3d:79:94:4c:03:7b:71:3b:15:5a:4e:e4:b4:7e:c5:3c
CA Certificate Install (DER) — Download (PEM) — Info (TXT)
Current CRL Download (crl.harica.gr)





Sectigo certificates (issued to 10th of January, 2025)


RSA certificates


AAA Certificate Services (root certificate)

CA name C=GB, ST=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=AAA Certificate Services
Issuer C=GB, ST=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=AAA Certificate Services
Valid from January 1st, 2004
Valid to December 31st, 2028
Serial number 1
SHA1 hash d1:eb:23:a4:6d:17:d6:8f:d9:25:64:c2:f1:f1:60:17:64:d8:e3:49
SHA256 hash d7:a7:a0:fb:5d:7e:27:31:d7:71:e9:48:4e:bc:de:f7:1d:5f:0c:3e:0a:29:48:78:2b:c8:3e:e0:ea:69:9e:f4
CA certificate Install (DER) — Download (PEM) — Preview (TXT)
Current CRL Download (crl.comodoca.com)


USERTrust RSA Certification Authority (intermediate certificate)

CA name C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority
Issuer C=GB, ST=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=AAA Certificate Services
Valid from March 12th 2019
Valid to December 31st 2028
Serial number 39:72:44:3a:f9:22:b7:51:d7:d3:6c:10:dd:31:35:95
SHA1 hash d8:9e:3b:d4:3d:5d:90:9b:47:a1:89:77:aa:9d:5c:e3:6c:ee:18:4c
SHA256 hash 68:b9:c7:61:21:9a:5b:1f:01:31:78:44:74:66:5d:b6:1b:bd:b1:09:e0:0f:05:ca:9f:74:24:4e:e5:f5:f5:2b
CA certificate Install (DER) — Download (PEM) — Preview (TXT)
Current CRL Download (crl.usertrust.com)


GEANT OV RSA CA 4 (intermediate certificate)

CA name C=NL, O=GEANT Vereniging, CN=GEANT OV RSA CA 4
Issuer C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority
Valid from February 18th 2020
Valid to May 1st 2033
Serial number da:43:bd:13:9b:d2:58:bb:4d:d6:1c:ac:c4:f3:db:e0
SHA1 hash c2:82:6e:26:6d:74:05:d3:4e:f8:97:62:63:6a:e4:b3:6e:86:cb:5e
SHA256 hash 37:83:4f:a5:ea:40:fb:f7:b6:11:96:95:59:62:e1:ca:05:58:87:24:35:e4:20:66:53:d3:f6:20:dd:8e:98:8e
CA certificate Install (DER) — Download (PEM) — Preview (TXT)
Current CRL Download (GEANT.crl.sectigo.com)


Certificate chain (intermediate only) Download (PEM)
Certificate chain (full chain) Download (PEM)



EC certificates


AAA Certificate Services (root certificate)

CA name C=GB, ST=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=AAA Certificate Services
Issuer C=GB, ST=Greater Manchester, L=Salford, O=Comodo CA Limited, CN=AAA Certificate Services
Valid from January 1st, 2004
Valid to December 31st, 2028
Serial number 1
SHA1 hash d1:eb:23:a4:6d:17:d6:8f:d9:25:64:c2:f1:f1:60:17:64:d8:e3:49
SHA256 hash d7:a7:a0:fb:5d:7e:27:31:d7:71:e9:48:4e:bc:de:f7:1d:5f:0c:3e:0a:29:48:78:2b:c8:3e:e0:ea:69:9e:f4
CA certificate Install (DER) — Download (PEM) — Preview (TXT)
Current CRL Download (crl.comodoca.com)


USERTrust ECC Certification Authority (intermediate certificate)

CA name C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust ECC Certification Authority
Issuer C = GB, ST = Greater Manchester, L = Salford, O = Comodo CA Limited, CN = AAA Certificate Services
Valid from March 12th 2019
Valid to December 31st 2028
Serial number 56:67:1d:04:ea:4f:99:4c:6f:10:81:47:59:d2:75:94
SHA1 hash ca:77:88:c3:2d:a1:e4:b7:86:3a:4f:b5:7d:00:b5:5d:da:cb:c7:f9
SHA256 hash a6:cf:64:db:b4:c8:d5:fd:19:ce:48:89:60:68:db:03:b5:33:a8:d1:33:6c:62:56:a8:7d:00:cb:b3:de:f3:ea
CA certificate Install (DER) — Download (PEM) — Preview (TXT)
Current CRL Download (crl.usertrust.com)


GEANT OV ECC CA 4 (intermediate certificate)

CA name C=NL, O=GEANT Vereniging, CN=GEANT OV ECC CA 4
Issuer C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust ECC Certification Authority
Valid from February 18th 2020
Valid to May 1st 2033
Serial number eb:8e:81:19:71:29:f4:af:64:ef:81:4a:2f:50:ce:e9
SHA1 hash 8a:63:c0:19:62:01:65:b8:51:20:c8:de:b3:36:2d:07:95:02:04:86
SHA256 hash 08:37:99:e8:b2:b9:01:6e:44:70:2e:bf:9b:f3:69:ce:25:3f:e1:fb:eb:65:0e:5d:f1:0e:f4:4d:87:bf:3b:ae
CA certificate Install (DER) — Download (PEM) — Preview (TXT)
Current CRL Download (GEANT.crl.sectigo.com)


Certificate chain (intermediate only) Download (PEM)
Certificate chain (full chain) Download (PEM)