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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

idperformance.dk · 94.231.103.100:443

Verified

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

Subject
CN=idperformance.dk
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-10-11T06:41:07+00:00
Expires
2027-01-09T06:41:06+00:00
Days remaining
89
Serial (hex)
05592F8AAE07ABBC33B0BEE0936966AD34FA
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:idperformance.dk

SHA-256 fingerprint

C1:7A:8E:F9:86:4E:FA:9A:2A:1A:DB:30:98:17:49:08:91:99:D6:F6:58:E9:23:0D:40:7F:C8:C3:F9:60:70:C2
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
43:7F:62:20:E5:5D:0F:8D:85:92:F1:F6:FA:61:49:1A:7D:A7:E8:15
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:idperformance.dk
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/123.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 46:A2:39:67:C6:0D:B6:46:87:C6:6F:3D:F9:99:94:76: 93:A6:A6:11:20:84:57:D5:55:E7:E3:D0:A1:D9:B6:46 Timestamp : Oct 11 07:39:37.755 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:A1:7C:B2:7E:90:17:E8:4D:67:77:37: 06:83:3D:E6:6B:27:9A:1E:86:72:49:63:5B:78:BC:13: 5D:F0:1D:1E:DD:02:21:00:AD:25:4A:1A:A2:0C:4F:23: 91:3A:2E:EE:FB:78:78:CE:6D:66:B9:CA:31:37:06:F0: 2F:51:BA:52:85:BB:0E:3F Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46: FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8 Timestamp : Oct 11 07:39:38.723 2026 GMT Extensions: 00:00:05:00:20:E7:B2:ED Signature : ecdsa-with-SHA256 30:46:02:21:00:B6:9F:D4:25:24:B9:31:61:DF:C8:D6: BA:D2:A0:B1:29:87:0D:7F:41:21:9C:94:C0:E5:7F:C6: 79:D3:45:C6:59:02:21:00:DA:8F:D6:A5:BA:FE:6E:0D: 01:91:CB:B4:36:38:14:D5:D3:66:87:7D:B8:A0:CB:E3: A8:A2:4C:9E:62:2E:9D:BE
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-12T00:21:37+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
691
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
2152
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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lYZbY8tpEroKrFB6PFGzrJIDRyts4HqvuH52RFj2zv/BAgMBAAGjgeswgegwDgYD
VR0PAQH/BAQDAgEGMBMGA1UdJQQMMAoGCCsGAQUFBwMBMA8GA1UdEwEB/wQFMAMB
Af8wHQYDVR0OBBYEFN7nW2DQIm1AKH0/DQH+pLVStFGUMB8GA1UdIwQYMBaAFHm0
WeZ7tuXkAXOACIjIGlj26ZtuMDIGCCsGAQUFBwEBBCYwJDAiBggrBgEFBQcwAoYW
aHR0cDovL3gxLmkubGVuY3Iub3JnLzATBgNVHSAEDDAKMAgGBmeBDAECATAnBgNV
HR8EIDAeMBygGqAYhhZodHRwOi8veDEuYy5sZW5jci5vcmcvMA0GCSqGSIb3DQEB
CwUAA4ICAQA8spSI95KKfn2W6GMmDpHBJSPaLbsS3W93cijJCRCYAc1fsJgL1FIL
7C0C9ecPOdcwB2fi0Dk2p94j9iTJCxmt5CFSKLRWwnXT2MMSXexVxqoVB79BdWPx
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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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