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

mail.flynet.it · 45.10.12.10:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. Peer certificate subjectAltName did not match expected name `mail.flynet.it'

Certificate verification failed

Subject
CN=dbnetwork.it
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-10-14T19:27:23+00:00
Expires
2027-01-12T19:27:22+00:00
Days remaining
83
Serial (hex)
051C998545C115095259767F90E88C742F00
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:autoconfig.dbnetwork.it, DNS:autodiscover.dbnetwork.it, DNS:dbnetwork.it, DNS:mail.dbnetwork.it, DNS:vps.dbnetwork.it, DNS:www.dbnetwork.it

SHA-256 fingerprint

A9:0D:0E:75:DA:09:4E:E1:76:B4:6F:8D:A2:1B:5C:8D:F7:5B:8F:B6:47:45:52:DC:9F:98:C8:C6:7F:8B:43:41
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
FE:4B:DA:32:D4:A3:1A:CF:F0:F6:69:28:01:30:7F:75:E5:FE:B7:84
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:autoconfig.dbnetwork.it, DNS:autodiscover.dbnetwork.it, DNS:dbnetwork.it, DNS:mail.dbnetwork.it, DNS:vps.dbnetwork.it, DNS:www.dbnetwork.it
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/1.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : A2:81:00:18:73:4E:17:6E:1D:47:E0:95:40:F3:81:BA: 54:66:97:CD:63:A8:43:50:71:6E:B8:09:4E:DA:F1:0D Timestamp : Oct 14 20:25:53.653 2026 GMT Extensions: 00:00:05:00:23:E6:E0:F4 Signature : ecdsa-with-SHA256 30:45:02:20:54:EE:69:E3:D0:76:36:88:B9:25:F2:8F: 2B:D6:50:3D:7D:61:42:03:E8:34:04:86:B2:58:2E:31: F2:60:2B:29:02:21:00:91:CC:72:D6:B7:B8:E5:0B:65: 6D:02:34:56:4A:0F:2C:64:AF:85:C3:91:22:FD:56:D6: AD:A2:E0:2D:9B:0C:66 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 44:C2:BD:0C:E9:14:0E:64:A5:C9:4A:01:93:0A:5A:A1: BB:35:97:0E:00:EE:11:16:89:68:2A:1C:44:D7:B5:66 Timestamp : Oct 14 20:25:53.704 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:EF:A4:29:37:D9:11:ED:5C:C0:BA:86: F5:05:E5:7A:B8:78:3B:B1:13:52:4F:5F:F3:93:8D:A9: 7F:C0:93:E0:76:02:21:00:91:3B:76:B7:4D:95:9C:A7: 91:FC:25:7B:F0:B5:94:EB:6A:56:9F:BB:5A:81:D1:66: 0D:51:57:DF:A9:B1:D9:06
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-21T18:39:05+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
682
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-----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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
2143
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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