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

registro.it · 192.12.192.40:443

Verified

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

Subject
CN=www.nic.it
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-08-15T14:29:10+00:00
Expires
2026-11-13T14:29:09+00:00
Days remaining
52
Serial (hex)
0528B570757B2B1F28955DADD6215CB61A77
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:dotitalianregistry.it, DNS:dotitregistry.it, DNS:nic.it, DNS:registro.it, DNS:registrodominitalia.it, DNS:registroitaliadomini.it, DNS:web-r4.nic.it, DNS:www.dotitalianregistry.it, DNS:www.dotitregistry.it, DNS:www.nic.it, DNS:www.registro.it, DNS:www.registrodominitalia.it, DNS:www.registroitaliadomini.it

SHA-256 fingerprint

56:3A:3E:0C:1A:AE:1F:51:BE:FD:36:1F:DD:30:03:32:94:E8:EB:D3:C3:19:14:F3:95:E8:5B:3E:58:A6:F2:9B
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
CE:5B:4E:24:A8:C6:5D:D0:B9:22:61:B4:35:AB:DA:B0:B6:9E:DE:D6
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:dotitalianregistry.it, DNS:dotitregistry.it, DNS:nic.it, DNS:registro.it, DNS:registrodominitalia.it, DNS:registroitaliadomini.it, DNS:web-r4.nic.it, DNS:www.dotitalianregistry.it, DNS:www.dotitregistry.it, DNS:www.nic.it, DNS:www.registro.it, DNS:www.registrodominitalia.it, DNS:www.registroitaliadomini.it
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/120.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Aug 15 15:27:40.716 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:62:F6:5A:75:CF:9F:60:27:51:78:48:A8: AD:C6:E1:AB:DF:A3:9E:B0:8B:62:55:79:CF:C1:93:3B: EA:38:03:05:02:20:5A:01:E4:28:B3:6D:05:95:39:50: E0:58:A2:14:38:57:DE:37:96:DF:03:60:00:91:49:F2: 63:29:CD:28:F2:46 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 : Aug 15 15:27:40.952 2026 GMT Extensions: 00:00:05:00:14:04:40:34 Signature : ecdsa-with-SHA256 30:45:02:21:00:83:FF:0D:B1:B3:2B:DE:7F:CE:60:93: 16:89:6B:68:DE:3B:FC:E9:0C:85:DA:A3:2D:CF:46:04: 17:47:86:A8:CB:02:20:1A:5C:DB:51:D4:03:3C:EE:5C: F9:63:62:97:E2:A4:EA:0E:EE:22:80:27:65:99:B2:88: 39:9C:E2:78:2D:B0:71
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-22T00:33:11+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
711
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
2172
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-----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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

Registration / WHOIS →DNS records →