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

isnic.is · 185.93.157.44:443

Verified

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

Subject
CN=www.isnic.is
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-09-30T14:48:29+00:00
Expires
2026-12-29T14:48:28+00:00
Days remaining
78
Serial (hex)
068488C45728E47384536C7908FCFC1B2DB6
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:api.isnic.is, DNS:epp.isnic.is, DNS:ht-api.isnic.is, DNS:intis.is, DNS:isnic.is, DNS:mh-api.isnic.is, DNS:nic.is, DNS:ntp.is, DNS:rdap.isnic.is, DNS:registry.is, DNS:rpp.isnic.is, DNS:www.intis.is, DNS:www.isnic.is, DNS:www.nic.is, DNS:www.ntp.is, DNS:www.registry.is

SHA-256 fingerprint

74:FE:0A:1F:E9:E6:DF:30:BF:83:17:DE:32:23:53:73:9D:8C:33:D6:EB:B6:EA:E1:A7:9F:DA:D3:F5:FB:59:FC
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
AE:E1:29:8D:A2:72:65:04:4A:C3:D6:49:CF:EA:65:2D:E9:47:86:45
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:api.isnic.is, DNS:epp.isnic.is, DNS:ht-api.isnic.is, DNS:intis.is, DNS:isnic.is, DNS:mh-api.isnic.is, DNS:nic.is, DNS:ntp.is, DNS:rdap.isnic.is, DNS:registry.is, DNS:rpp.isnic.is, DNS:www.intis.is, DNS:www.isnic.is, DNS:www.nic.is, DNS:www.ntp.is, DNS:www.registry.is
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/55.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 : Sep 30 15:46:59.532 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:09:8E:28:2A:F0:79:30:F8:0D:4D:B5:55: 74:56:90:7D:DA:2F:AA:19:3E:85:3E:D4:20:60:E8:80: C7:4D:CD:57:02:20:77:50:B6:8F:B4:13:8A:AD:9F:96: A1:F1:90:FB:C8:F2:7F:C2:93:7F:F4:95:8B:5B:CF:C3: 6E:F0:A2:DF:57:10 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 : Sep 30 15:46:56.910 2026 GMT Extensions: 00:00:05:00:48:46:EF:4C Signature : ecdsa-with-SHA256 30:45:02:20:3F:CE:F1:4F:2C:40:77:2C:9E:09:8E:9D: 42:07:75:E1:91:D6:0C:CE:72:7D:66:2D:60:78:C6:1C: 84:3E:DD:C0:02:21:00:AF:A0:F2:18:4E:CD:DB:BC:47: 1C:FD:3E:DF:DD:78:4C:BE:9B:57:F2:AE:91:91:A4:A9: 4C:7D:E3:10:32:59:82
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-11T15:57:38+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
692
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
2153
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

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