DV SSL/TLS Certificate for *.kastali.is

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the *.kastali.is DV SSL/TLS Certificate

This certificate with serial number 05:10:9a:de:12:16:2f:36:00:b0:53:cc:33:7d:b0:6c:78:e5 for *.kastali.is was issued on by Let's Encrypt.

With 2 subject alternative names, this certificate can be used to secure multiple FQDNs. This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for *.kastali.is provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 05:10:9a:de:12:16:2f:36:00:b0:53:cc:33:7d:b0:6c:78:e5
Serial Number (int): 441211801697630723946446621970142052776165
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 4b:d1:50:76:a0:92:d5:b2:76:6a:19:6b:51:e9:d7:f6:3f:0f:a5:9b
Authority Key Identifier: c5:cf:46:a4:ea:f4:c3:c0:7a:6c:95:c4:2d:b0:5e:92:2f:26:e3:b9

Fingerprint (SHA-1): 1d:91:a0:4c:78:7c:70:3e:99:89:5e:52:68:06:d9:fe:df:f1:ac:3a
Fingerprint (SHA-256): 85:5b:0d:64:73:d7:39:4f:05:52:d9:bb:6c:61:df:25:2c:01:10:fc:1a:9f:19:7f:5c:9d:3b:e9:c8:77:80:78

Issuing Certificate URL: http://r11.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/102.crl

Check the revocation status for certificate *.kastali.is
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for *.kastali.is

Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

X.509 Certificate

The complete raw X.509 certificate details for *.kastali.is in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFADCCA+igAwIBAgISBRCa3hIWLzYAsFPMM32wbHjlMA0GCSqGSIb3DQEBCwUA
MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
EwNSMTEwHhcNMjUwNjI4MDk0NDU1WhcNMjUwOTI2MDk0NDU0WjAXMRUwEwYDVQQD
DAwqLmthc3RhbGkuaXMwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDH
zzuH2GdXBZowY0icwCg2Fwn+rKijI+7tYVSEBSDLc55QqgYrZ8yOAqxiXhv5yIOC
/HqIm2o8bRUrZzfP/gwmhMaEm4fE/W0lKeqDnwq5oZlWpXuDGcXAnjYYdlmAWB7x
jHNIdMeBOUW7ay0e8y4XrFExbpzRVvd0AUJzHsqbi6J3mOTP3VQXrsmEr28Jsxvz
zxp3EdO8j26WkS2nAQMt/mIqiXKCN32N6fPQiQ/ySV4t+5+SOMdlOHwJozNI6uOg
WbkOdu8IvmBvWbtJMI6pih1SSWIpPc7QYmxR/PacetVdw2W9B9wn3/T6V7Skl5XW
CFVzofJkU3+1dRY9ccQzAgMBAAGjggIoMIICJDAOBgNVHQ8BAf8EBAMCBaAwHQYD
VR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0O
BBYEFEvRUHagktWydmoZa1Hp1/Y/D6WbMB8GA1UdIwQYMBaAFMXPRqTq9MPAemyV
xC2wXpIvJuO5MDMGCCsGAQUFBwEBBCcwJTAjBggrBgEFBQcwAoYXaHR0cDovL3Ix
MS5pLmxlbmNyLm9yZy8wIwYDVR0RBBwwGoIMKi5rYXN0YWxpLmlzggprYXN0YWxp
LmlzMBMGA1UdIAQMMAowCAYGZ4EMAQIBMC8GA1UdHwQoMCYwJKAioCCGHmh0dHA6
Ly9yMTEuYy5sZW5jci5vcmcvMTAyLmNybDCCAQMGCisGAQQB1nkCBAIEgfQEgfEA
7wB2AH1ZHhLheCp7HGFnfF79+NCHXBSgTpWeuQMv2Q6MLnm4AAABl7YiiAwAAAQD
AEcwRQIhANfMyJcDXLvvR7gnt95bxhzrTYLDJgdGtdFh0fW8dAwiAiBQdzQfKTbM
C3VOE+09huFydm+HH+HKDM7HznZOMnjzAQB1ABLxTjS9U3JMhAYZw48/ehP457Vi
h4icbTAFhOvlhiY6AAABl7YiiAgAAAQDAEYwRAIgFnzY6E287Mx2FNLhcPa4nbxW
D5/Kmqce4uWAWvMhwwECIGSzSqwUMN/KndJJLF1k2T5eed5eSo4zbR1SQnxqF+pJ
MA0GCSqGSIb3DQEBCwUAA4IBAQBPiHSCx5Vni0WU9Ug5MM8osbjMg0iRPtfa7msj
op7VRPm+1Tt8yxjF3EXmr4vDWZcBmAVpIWRw2jZeF5Nlwb5Xmb3zCorCU8BAfGIp
es5cnJ95M5WIA/y0Jg460Clfv0xZ2wEdsYv4POH6kDHIPJ+if4tzbEzxFORpITLn
WAzQrZpfPXXCUh/b7TNO6MdsssidYURQWpKFlmK5Sd/41uK+O/yrfDJ1Wmkk7VcK
36EeMRZ+nX6FWSZeBRmrb3isFpB6Ki7KVhSPIh5y3fNIMcfIwbtvT/HclHMrXkqo
l+LDtEFOAph91PRVUP1KBU++PC7EQ4qR8fu4GqSob8L1h6/y
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx887h9hnVwWaMGNInMAo
NhcJ/qyooyPu7WFUhAUgy3OeUKoGK2fMjgKsYl4b+ciDgvx6iJtqPG0VK2c3z/4M
JoTGhJuHxP1tJSnqg58KuaGZVqV7gxnFwJ42GHZZgFge8YxzSHTHgTlFu2stHvMu
F6xRMW6c0Vb3dAFCcx7Km4uid5jkz91UF67JhK9vCbMb888adxHTvI9ulpEtpwED
Lf5iKolygjd9jenz0IkP8kleLfufkjjHZTh8CaMzSOrjoFm5DnbvCL5gb1m7STCO
qYodUkliKT3O0GJsUfz2nHrVXcNlvQfcJ9/0+le0pJeV1ghVc6HyZFN/tXUWPXHE
MwIDAQAB
-----END PUBLIC KEY-----

ASN.1 Decoded

 [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2
 . . . . . . . . [c:0|t:2|false] INTEGER 441211801697630723946446621970142052776165
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [c:0|t:5|false] NULL []
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R11'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-06-28 09:44:55 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-26 09:44:54 +0000 UTC
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3
 . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String '*.kastali.is'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1
 . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL []
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 25223612863181299870196054669278941554722199826841155298376731332112036896649517674868011348090823284445648643436423472427975250392827736706385920573866075678767552573916875025577804497538958706082790400474828649235429860146320136865458243161444698587363057937834940098272343048072883729252724544513525539032458044476732621101521630649024074071842907232369148980353947962974324258728065556169238022265065595819608067918840803298835970630277063493409462184201343356632210728827470789988300112014662229733067940707051187854961651136446035823347133157798891954215505699129575051337031123216667335471597358874591509988403
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537

 . . . . . . . . [c:2|t:3|true] ORAddress 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits)
							05a0
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							4bd15076a092d5b2766a196b51e9d7f63f0fa59b
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName c5cf46a4eaf4c3c07a6c95c42db05e922f26e3b9
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.kastali.is'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kastali.is'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (12 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.c.lencr.org/102.crl'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0076007d591e12e1782a7b1c61677c5efdf8d0875c14a04e959eb9032fd90e8c2e79b800000197b622880c0000040300473045022100d7ccc897035cbbef47b827b7de5bc61ceb4d82c3260746b5d161d1f5bc740c2202205077341f2936cc0b754e13ed3d86e172766f871fe1ca0ccec7ce764e3278f30100750012f14e34bd53724c840619c38f3f7a13f8e7b56287889c6d300584ebe586263a00000197b622880800000403004630440220167cd8e84dbceccc7614d2e170f6b89dbc560f9fca9aa71ee2e5805af321c301022064b34aac1430dfca9dd2492c5d64d93e5e79de5e4a8e336d1d52427c6a17ea49
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		004f887482c795678b4594f5483930cf28b1b8cc8348913ed7daee6b23a29ed544f9bed53b7ccb18c5dc45e6af8bc3599701980569216470da365e179365c1be5799bdf30a8ac253c0407c62297ace5c9c9f7933958803fcb4260e3ad0295fbf4c59db011db18bf83ce1fa9031c83c9fa27f8b736c4cf114e4692132e7580cd0ad9a5f3d75c2521fdbed334ee8c76cb2c89d6144505a92859662b949dff8d6e2be3bfcab7c32755a6924ed570adfa11e31167e9d7e8559265e0519ab6f78ac16907a2a2eca56148f221e72ddf34831c7c8c1bb6f4ff1dc94732b5e4aa897e2c3b4414e02987dd4f45550fd4a054fbe3c2ec4438a91f1fbb81aa4a86fc2f587aff2