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

viama.it · 188.40.174.36:443

Verified

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

Subject
CN=new-mail.viama.it
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-09-04T11:40:45+00:00
Expires
2026-12-03T11:40:44+00:00
Days remaining
62
Serial (hex)
05406C7B7FDD18AF19AC1080784793532B8D
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:autoconfig.viama.it, DNS:autodiscover.viama.it, DNS:imap.viama.it, DNS:mail.viama.it, DNS:new-mail.viama.it, DNS:pop3.viama.it, DNS:smtp.viama.it, DNS:viama.it

SHA-256 fingerprint

43:3E:B5:47:BF:F7:32:D5:5F:D4:87:66:1F:2A:37:B6:6D:70:CA:C9:52:B2:13:6A:8C:8C:EE:C0:89:D0:DF:21
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
51:C6:B2:E2:DB:B8:2B:86:42:0C:AB:FE:4F:DA:70:68:D2:9F:7C:6B
authorityKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityInfoAccess
CA Issuers - URI:http://yr2.i.lencr.org/
subjectAltName
DNS:autoconfig.viama.it, DNS:autodiscover.viama.it, DNS:imap.viama.it, DNS:mail.viama.it, DNS:new-mail.viama.it, DNS:pop3.viama.it, DNS:smtp.viama.it, DNS:viama.it
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/14.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : Sep 4 12:39:15.134 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:D7:5E:88:3E:51:75:D6:C5:EE:B6:8A: 4A:6F:B1:84:2C:FF:2A:5E:E6:78:86:5B:2C:D1:28:DF: E4:52:6C:A8:F7:02:21:00:FE:58:91:68:5C:A9:F3:FA: 77:B2:12:CD:FF:E6:BF:C3:C7:82:39:72:AC:50:15:DF: E7:2D:24:F5:10:A0:24:FD Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 46:AF:86:3D:3B:3E:E5:9F:A5:77:DE:A8:24:5D:36:B0: D9:ED:22:A2:23:F4:61:77:41:22:94:52:EE:95:50:5F Timestamp : Sep 4 12:39:15.352 2026 GMT Extensions: 00:00:05:00:24:C6:FF:15 Signature : ecdsa-with-SHA256 30:45:02:20:6F:39:C5:11:52:F5:E8:3D:93:CE:BE:0E: 8B:40:16:FC:87:FE:CC:3B:3A:7A:1C:CE:CB:C6:C5:18: 61:75:16:27:02:21:00:F9:D8:18:5B:FF:34:36:4E:FB: 23:BD:DC:C9:24:45:EF:F5:11:1A:EA:14:73:C3:A2:FB: 94:B1:8C:79:15:45:C9
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-02T02:58:13+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR2
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
701
Serial (hex)
4EBD24947E24D394802D84A52FD5B319
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

23:8B:85:A0:09:9C:65:B9:70:47:7D:57:24:F1:A1:D4:75:CE:50:58:CF:FE:4E:FA:87:33:89:9B:DB:86:3C:47
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
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-----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==
-----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
2162
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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