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

TLSv1.2

relay3.telnetwork.it · 195.36.1.103:443

Verified

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

Subject
CN=cleopatra.telnetwork.it
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-07-31T23:02:21+00:00
Expires
2026-10-29T23:02:20+00:00
Days remaining
33
Serial (hex)
065FB6E003243337B6685DF7135FEA9E840D
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:cleo.telnetwork.it, DNS:cleopatra.telnetwork.it, DNS:imap.telnetwork.it, DNS:imap3.telnetwork.it, DNS:mail.telnetwork.it, DNS:mail3.telnetwork.it, DNS:pop.telnetwork.it, DNS:pop3.telnetwork.it, DNS:relay.telnetwork.it, DNS:relay3.telnetwork.it, DNS:smtp.telnetwork.it, DNS:smtp3.telnetwork.it, DNS:webmail.telnet.it, DNS:webmail.telnetwork.it

SHA-256 fingerprint

61:88:55:F1:8F:43:DF:D2:AD:70:00:77:A7:7F:5D:5B:E4:18:72:06:07:C2:CB:B9:D8:AC:69:94:5B:7C:60:FB
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
CD:5B:5F:18:BE:21:17:43:F4:0D:EC:78:13:50:76:1A:F8:31:61:C6
authorityKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityInfoAccess
CA Issuers - URI:http://yr1.i.lencr.org/
subjectAltName
DNS:cleo.telnetwork.it, DNS:cleopatra.telnetwork.it, DNS:imap.telnetwork.it, DNS:imap3.telnetwork.it, DNS:mail.telnetwork.it, DNS:mail3.telnetwork.it, DNS:pop.telnetwork.it, DNS:pop3.telnetwork.it, DNS:relay.telnetwork.it, DNS:relay3.telnetwork.it, DNS:smtp.telnetwork.it, DNS:smtp3.telnetwork.it, DNS:webmail.telnet.it, DNS:webmail.telnetwork.it
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/14.crl
ct_precert_scts
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 : Aug 1 00:00:51.973 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:BE:3C:52:43:83:79:04:E4:01:14:F4: 3C:53:A4:94:E1:6D:6D:E3:94:30:3B:5E:34:66:53:B5: BC:6C:AE:88:6A:02:20:49:2F:97:0A:0D:BB:E8:4A:29: 52:0C:04:5B:B8:77:68:C8:DD:7C:53:23:49:D1:FC:57: DE:AD:D0:57:86:74:8C Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 26:E3:64:6E:58:69:21:23:BC:34:3F:47:24:35:9B:37: 92:CD:24:5A:88:D8:15:D3:93:33:FD:99:18:AB:47:23 Timestamp : Aug 1 00:00:50.719 2026 GMT Extensions: 00:00:05:00:2F:A3:89:DC Signature : ecdsa-with-SHA256 30:45:02:20:64:DB:52:8E:46:1E:22:F2:F0:D9:62:33: 6D:AB:47:B1:FD:8C:2E:61:37:F7:59:6D:D8:F9:CA:70: 64:1A:55:9F:02:21:00:DD:48:15:57:3F:2D:A6:B7:CB: FD:74:E9:B5:F3:D7:65:6A:C2:7D:6E:FB:69:8C:14:24: AC:69:E9:7D:FE:59:70
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-09-26T02:58:23+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR1
Issuer
C=US O=ISRG CN=Root YR
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
707
Serial (hex)
A20253F15F2691C05DC1CE13B9BCCA4E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:94:96:34:D9:9C:D6:FD:6A:A8:0B:C0:34:FE:FA:CC:EB:19:69:FE:EF:98:65:86:71:3E:CD:BB:05:75:8D:3F
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityInfoAccess
CA Issuers - URI:http://yr.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr.c.lencr.org/ 
-----BEGIN CERTIFICATE-----
MIIE2zCCAsOgAwIBAgIRAKICU/FfJpHAXcHOE7m8yk4wDQYJKoZIhvcNAQELBQAw
LjELMAkGA1UEBhMCVVMxDTALBgNVBAoTBElTUkcxEDAOBgNVBAMTB1Jvb3QgWVIw
HhcNMjUwOTAzMDAwMDAwWhcNMjgwOTAyMjM1OTU5WjAzMQswCQYDVQQGEwJVUzEW
MBQGA1UEChMNTGV0J3MgRW5jcnlwdDEMMAoGA1UEAxMDWVIxMIIBIjANBgkqhkiG
9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoVi8X2xCYgMXvJxNPKp/oF13UMgmPABB07VC
LNDtoXmt9luEZNJSBV10VyT1Pz6LD8Zq1d2gc43WNl1AdRrj4sEnazbOiz0nPpmG
Bp2hui49oZtDIY6wdKeZAi5BbNU20CH6RSBBMLSQ9cXrH8dxdv4PAJ45ssGML68U
SE3BsjC2a6cAN9L5CgXVIQi5tfNiTPoFZZ3S0OlXqLmmtdV95udWAb5b6e/F49Di
CsH0Y00Ag72BVIb1hzynmKe+X0mERBTtsb3BwmpV9ipeBjMLoR/D9cHxHQCWoi5l
TmXwY015J5rGelz1nZjJuxc2kioaX29XJBnhMkP531rSdG5uMwIDAQABo4HuMIHr
MA4GA1UdDwEB/wQEAwIBhjATBgNVHSUEDDAKBggrBgEFBQcDATASBgNVHRMBAf8E
CDAGAQH/AgEAMB0GA1UdDgQWBBQfLzW+RhSCzUCxrnksVXj699Ro+zAfBgNVHSME
GDAWgBTe51tg0CJtQCh9Pw0B/qS1UrRRlDAyBggrBgEFBQcBAQQmMCQwIgYIKwYB
BQUHMAKGFmh0dHA6Ly95ci5pLmxlbmNyLm9yZy8wEwYDVR0gBAwwCjAIBgZngQwB
AgEwJwYDVR0fBCAwHjAcoBqgGIYWaHR0cDovL3lyLmMubGVuY3Iub3JnLzANBgkq
hkiG9w0BAQsFAAOCAgEA0+zvMq3kHig1ddTmmm+RibTr9/RpX7k4buanMMRqbV/y
IvP82zAHN3mvaw+cASuVsdpd0ikjhr4hnhJQLQOzOp2ccKrsdGOAgo0vddeISFAq
EWEV4lmUM3vFF796up+bSgmJ1u6RupDCMxDgF8M3eLvGuj6L0lu3zkQ0KuQLnKxL
tB0oQqn1Idg5CuuGpMvQzk29Pa3D/qHurc0EIM9SxukQuJqq63lxsYyRQFU8yMBO
hq1w5LbfaWNRrz1uklOfI/pYkAb2E2MTZrAMQkBIE2S8Jt1F8gRc96o/xOsrgvSk
a84AisX6xq1lz1Z7jGvrnXc4TMcjxZTjiTaihcYI1JIXZiLtEMSCa5l3cu8YWd6z
dLRQlqRdclVjuQfNHawRJ6GWlkK0QJosivTKwdBw3KxEtzGo8yMHERbsy57gP1UX
HOMcmZYQC0gtyR3SxfenIM/MxC3Ia2Ypab/kQ/CTnlIn2KQ5JUC6NYrGCbhFN9bp
5lKJStEwCUnLpntcrXk5XVDCNv/5RyWpRThkGOV7GetKkQ0qAY8hCzWK6oqnAhDZ
cjlYVdWfqOw3DIOX6EDNBgAqHarRVxyF9QZdOaXSyPJ0ueD2BYJEBgaCGQ8rAaU/
Qc123V5LTXDZW4CcsPBDyhy4v+c8hClAyw/IkJlfBqxB9D+/wvIMHgECZ4ptP6o=
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=ISRG CN=Root YR
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2026-05-13T00:00:00+00:00
Expires
2032-09-02T23:59:59+00:00
Days remaining
2168
Serial (hex)
F24B6D17F9D9AD7CB1C9FEA78782699F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

07:26:39:D0:B1:40:D5:BF:FA:E1:6A:D9:C3:F6:CC:60:86:04:06:21:F5:1E:E6:1A:6D:46:A8:91:5C:07:CF:76
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
authorityInfoAccess
CA Issuers - URI:http://x1.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/ 
-----BEGIN CERTIFICATE-----
MIIF9DCCA9ygAwIBAgIRAPJLbRf52a18scn+p4eCaZ8wDQYJKoZIhvcNAQELBQAw
TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh
cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMjYwNTEzMDAwMDAw
WhcNMzIwOTAyMjM1OTU5WjAuMQswCQYDVQQGEwJVUzENMAsGA1UEChMESVNSRzEQ
MA4GA1UEAxMHUm9vdCBZUjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIB
ANvGJnN78CTJdWL3+eGfsLN5TrNBJs+VH9hRXqRbwxu9sGNiB0BD1fcOxbSUQCJI
M1xE13Db+5Cw1w0s0EBYsvuIP/6joF0w8cuImbgR1OGgYbSQ4OpzI+DG8SGuTlcE
873OCS+kh3srlo6vl43M5OJg4Aeo1sfHp6kTJDoIiFBNJAY+OKfX/FUvYKuhjT+n
o49lmqmupSBI5PkBQiqrEGtWU5uxU/cQWHGu8jSjFBznZqvbNPLMXMLFxCb3WTfr
JBXXjqvWG+v4bjzxjjeAtOlU7qarRDvNOyAuQYLln904M+faKx8hnLCpJ15ZqaEg
cNlY+9MMWcC5yvL2A2j3l9+2buggZX+dOE91zYmIdawTvSZuVvlbRrAlLxIB6pwM
BjneXCjYQ8+3BCCjssbSNpZU3hTcBDdhfAlEDlYr6pEatnMdmDT5BqnKC92bd0Eh
M1fbLHioLccLCuievT8ZkPhZrq7Mii7gNXAcUEAR8+lzYal+9zTg7C5DALyVOeG/
CqfRAMn1KSHCR0NSA6P8tn/mGRlnCct5rtVCLnVySVpU6H1qGg3DgTOuskf8eahT
MiYbI5ezPJmO5ertalskQ1utp74+eDy92PI4ftHKTbq9IWhH4YZKh3WnJEIt+oQv
lYZbY8tpEroKrFB6PFGzrJIDRyts4HqvuH52RFj2zv/BAgMBAAGjgeswgegwDgYD
VR0PAQH/BAQDAgEGMBMGA1UdJQQMMAoGCCsGAQUFBwMBMA8GA1UdEwEB/wQFMAMB
Af8wHQYDVR0OBBYEFN7nW2DQIm1AKH0/DQH+pLVStFGUMB8GA1UdIwQYMBaAFHm0
WeZ7tuXkAXOACIjIGlj26ZtuMDIGCCsGAQUFBwEBBCYwJDAiBggrBgEFBQcwAoYW
aHR0cDovL3gxLmkubGVuY3Iub3JnLzATBgNVHSAEDDAKMAgGBmeBDAECATAnBgNV
HR8EIDAeMBygGqAYhhZodHRwOi8veDEuYy5sZW5jci5vcmcvMA0GCSqGSIb3DQEB
CwUAA4ICAQA8spSI95KKfn2W6GMmDpHBJSPaLbsS3W93cijJCRCYAc1fsJgL1FIL
7C0C9ecPOdcwB2fi0Dk2p94j9iTJCxmt5CFSKLRWwnXT2MMSXexVxqoVB79BdWPx
VXETkVme/qYSAuKVHh5Ps+5BixgmwS1JkjSAc+MfrUbNssVEEnH0aEiAh+rotXAV
JSP/Ye7LJPEwD9DWG72vVWbhAcuOf5OLjz57Ctk7MgQHynZ7+PlHJtajroCaIbtC
r6tcZZaAwUQm+jQyeWdV+2hv9deOYFmKeQyjjcSrN5Nadrw+L9DZJLbA1HqeNvLh
BgqpP0fvJq2N6EtD574N6eMI7uMsJTnji2UDz9el5XLSv9fqJMuDQtYVb2oTNoKp
oUqhxPVC0aq4eG5MESaIdn8b5ZGSSeAJLMHXljEdlNza+ncfkviXk1POLnnFdvx8
/gk6M374WbLWFXw8N141B/Rl/tINGfl1TxOIiqtiMYkL02RSGb1kq34BL9NPP27z
RGMuHGnzS3hFIrRTfKxrzUZ9RzQWzEG3K6fJ3r2nqSltkeytis9DIBoFY9VmVyjL
M71DMi+y1+TRSJVClEMwvA4yL++7q9XZx5r5wBRWB4kQTKH5qyoZnDw7iiuh1lID
yDFx8r7i9vIJU5HS3moZLkYWAOilMaV9N56A9Bgb6dNcHkvg3NoaYA==
-----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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