pokersamband.is
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:b1:1a:e5:43:2d:39:8f:ea:16:c0:c8:4a:f8:cf:2e:1c:a7 was issued on by Let's Encrypt.
With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.
We have idenified some issues with this certificate:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=pokersamband.is
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:b1:1a:e5:43:2d:39:8f:ea:16:c0:c8:4a:f8:cf:2e:1c:a7Serial Number (int): 321602587066662385646320748443913952304295
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 2c:f1:a1:c8:03:65:c0:29:a8:3c:5f:17:ce:05:4f:d2:3d:d8:1c:e9
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 8c:0b:38:ae:d2:06:19:a7:72:cc:21:bd:10:05:58:a9:a3:5e:df:6a
Fingerprint (sha256): 4f:37:a5:7a:19:29:7c:e8:e4:b1:2b:fc:dc:83:70:98:b8:36:31:da:e7:2d:79:ba:ee:60:6d:10:bd:90:d4:5f
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate pokersamband.is
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for pokersamband.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
9 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
pokersamband.is
www.pokersamband.is
www.pokersamband.is
Other certificates including the domain name pokersamband.is
(limited to 100 certificates)
2.pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
2.pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
2.pokersamband.is
2.pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
2.pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
2.pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
2.pokersamband.is
2.pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
pokersamband.is
2.pokersamband.is
pokersamband.is
Certificate
The complete raw certificate details for pokersamband.is in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGHjCCBQagAwIBAgISA7Ea5UMtOY/qFsDISvjPLhynMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODA2MDUxNTI1MDdaFw0x ODA5MDMxNTI1MDdaMBoxGDAWBgNVBAMTD3Bva2Vyc2FtYmFuZC5pczCCASIwDQYJ KoZIhvcNAQEBBQADggEPADCCAQoCggEBAK1G/WwpyLhJ+oEmow/P0BaEB//QF08O uhfi6TrgzFqeMgNne3GWYgzRwiiYnumdLIYxfsMOAfm15NPg7BN5/c1EGvj5IKW3 xiSk1sIbadoegeJc/sKPzQpKlsc+gFP3Ga7YPq6ZbsVOlD9DmuD9Lc02gH64vaiq byZaqJ1X8EuC82cLiuu1TPVeViUr9pEFB6ydlKwK4qdca+rLY0zICdOxgCx92eVy 1H5U+TJb1EaZWeYFqLNlglN3J51C/3RlYtE6S9hc7mMr4DJ1VTj/8T9xQYcXM7s+ bSy4neEarbHAoVmx6oqC/1kQLu5LOFjM6fTk3FbmuMPKP+8GSSqbgEsCAwEAAaOC AywwggMoMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYB BQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQULPGhyANlwCmoPF8XzgVP0j3Y HOkwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYIKwYBBQUHAQEE YzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0c2VuY3J5cHQu b3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2VuY3J5cHQu b3JnLzAvBgNVHREEKDAmgg9wb2tlcnNhbWJhbmQuaXOCE3d3dy5wb2tlcnNhbWJh bmQuaXMwgf4GA1UdIASB9jCB8zAIBgZngQwBAgEwgeYGCysGAQQBgt8TAQEBMIHW MCYGCCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCBqwYIKwYB BQUHAgIwgZ4MgZtUaGlzIENlcnRpZmljYXRlIG1heSBvbmx5IGJlIHJlbGllZCB1 cG9uIGJ5IFJlbHlpbmcgUGFydGllcyBhbmQgb25seSBpbiBhY2NvcmRhbmNlIHdp dGggdGhlIENlcnRpZmljYXRlIFBvbGljeSBmb3VuZCBhdCBodHRwczovL2xldHNl bmNyeXB0Lm9yZy9yZXBvc2l0b3J5LzCCAQQGCisGAQQB1nkCBAIEgfUEgfIA8AB2 ANt0r+7LKeyx/so+cW0s5bmquzb3hHGDx12dTze2H79kAAABY9DEK7QAAAQDAEcw RQIgGroULuG8AX8YmPKpGJ4jxLAlMW7p/zkc4CRB4d51rnUCIQCA5kR9Dmqi/5qT 9uoF6t1E/SLzukmrLQo1ONv3bKm17gB2ACk8UZZUyDlluqpQ/FgH1Ldvv1h6KXLc pMMM9OVFR/R4AAABY9DEK9YAAAQDAEcwRQIhAKQg+T6VBAM+QYmkYEcWptmptBMg 1iHhNbtO4G4oLq26AiAqfA04Rej5I5GeZBCaZam144pTaGitToIpntJIEFwF6jAN BgkqhkiG9w0BAQsFAAOCAQEAizd6f6jvAbpYkLBdG7MMJfKzU+/qjph3DZNrmFsU tsPBuMkcCgpvyzTkvyTG2HU5r6JMPjJUdFMXACK9HgeWdmpaf3yhucSDS9dZAuf6 AMvYsdTN6pcgmYP/qqifudF/8V4Gg28uT2aygIDL5X5Ol0zAAts/TXt1y2uhHLKh nMBp3SxPUx76ewk3f03g29rbK4cs0AG3raGqam5Gxj1NG5wyzns5JruSdo5BT/NL pwty7grufYIGfweBkKYPhXa+hvYt4xECn6WtBNGkiuuDl2kC6ZQwoWzbT9U3Ph+z +Zxo4vcHo5YEKodyI3UOEsQOXY7hk9Jev07kR/mWq+IMtg== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArUb9bCnIuEn6gSajD8/Q FoQH/9AXTw66F+LpOuDMWp4yA2d7cZZiDNHCKJie6Z0shjF+ww4B+bXk0+DsE3n9 zUQa+PkgpbfGJKTWwhtp2h6B4lz+wo/NCkqWxz6AU/cZrtg+rpluxU6UP0Oa4P0t zTaAfri9qKpvJlqonVfwS4LzZwuK67VM9V5WJSv2kQUHrJ2UrArip1xr6stjTMgJ 07GALH3Z5XLUflT5MlvURplZ5gWos2WCU3cnnUL/dGVi0TpL2FzuYyvgMnVVOP/x P3FBhxczuz5tLLid4RqtscChWbHqioL/WRAu7ks4WMzp9OTcVua4w8o/7wZJKpuA SwIDAQAB -----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 321602587066662385646320748443913952304295 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . . . . . [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 (countryName) . . . . . . . . . . . . . . . . . . . . [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 (organizationName) . . . . . . . . . . . . . . . . . . . . [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 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt Authority X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-06-05 15:25:07 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-09-03 15:25:07 +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 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'pokersamband.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 (rsaEncryption) . . . . . . . . . . . . . . . . [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 21874233199152241014044724557798088587771805170780431630422008009079740967794859685774939547590109320769071748790835358329597429189569240464558524538309090737421474428136842056984183632142052974776983874801135128142675240808933241432985646619910927551940459520473414327863089567533772167520690025282922802093542510549349776029102020107652355537644173920768720956075121295870594704502948262353362457568363013752952998060944192843611031375599448820206263288863829605991835009406051942792733430273178021161225447119016193092652147237398170890588411648314030918401243586235274343449994850363459621590699606843659166384203 . . . . . . . . . . . . . . . . . . . . [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 (keyUsage) . . . . . . . . . . . . . . . . . . . . [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 (extKeyUsage) . . . . . . . . . . . . . . . . . . . . [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 (serverAuth) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [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 (subjectKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes) 2cf1a1c80365c029a83c5f17ce054fd23dd81ce9 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (99 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.int-x3.letsencrypt.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cert.int-x3.letsencrypt.org/' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (40 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'pokersamband.is' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.pokersamband.is' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 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 (Domain Validation Certificates Policy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . . . . . . . . . . . . . [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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007600db74afeecb29ecb1feca3e716d2ce5b9aabb36f7847183c75d9d4f37b61fbf6400000163d0c42bb4000004030047304502201aba142ee1bc017f1898f2a9189e23c4b025316ee9ff391ce02441e1de75ae7502210080e6447d0e6aa2ff9a93f6ea05eadd44fd22f3ba49ab2d0a3538dbf76ca9b5ee007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000163d0c42bd60000040300473045022100a420f93e9504033e4189a4604716a6d9a9b41320d621e135bb4ee06e282eadba02202a7c0d3845e8f923919e64109a65a9b5e38a536868ad4e82299ed248105c05ea . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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