kru.com

Issued by R3

About this certificate

This digital certificate with serial number 04:fd:d0:b2:ae:97:05:72:0c:ea:81:e1:68:93:e2:26:e0:7e was issued on by Let's Encrypt.

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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • 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)

Certificate Subject

CN=kru.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:fd:d0:b2:ae:97:05:72:0c:ea:81:e1:68:93:e2:26:e0:7e
Serial Number (int): 434817989751106908422242650307938113478782
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: ea:2a:46:f1:56:58:9f:bd:ed:ee:a9:69:4c:68:fa:8c:98:64:c3:ed
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): e6:1a:b4:6f:ab:c7:0c:f6:60:6f:ef:e6:05:39:17:87:8e:21:ff:d4
Fingerprint (sha256): 57:49:a4:a5:b3:33:89:db:7e:0e:e5:f3:26:e3:3e:dc:5c:47:d1:1c:a4:3a:aa:a0:3f:b7:70:cd:0f:d9:50:39

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate kru.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for kru.com

Public Key Algorithm

RSA

Key Size

3072

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

kru.com

Other certificates including the domain name kru.com

(limited to 100 certificates)
secure.kru.com
support.kru.com
support.kru.com
support.kru.com
support.kru.com
secure.kru.com
billadmin.kru.com
secure.kru.com
billadmin.kru.com
secure.kru.com
secure.kru.com
secure.kru.com
kru.com
support.kru.com
support.kru.com
support.kru.com
secure.kru.com
secure.kru.com
kru.com
support.kru.com
testers.kru.com
kru.com
secure.kru.com
testers.kru.com
secure.kru.com
support.kru.com
secure.kru.com
kru.com
secure.kru.com
support.kru.com
secure.kru.com
support.kru.com
secure.kru.com
secure.kru.com
kru.com
support.kru.com
billadmin.kru.com
support.kru.com
kru.com
support.kru.com
billadmin.kru.com
support.kru.com
support.kru.com
secure.kru.com
billadmin.kru.com
support.kru.com
secure.kru.com
secure.kru.com
support.kru.com
secure.kru.com
support.kru.com
support.kru.com
secure.kru.com
support.kru.com
billadmin.kru.com
support.kru.com
support.kru.com
secure.kru.com
support.kru.com
secure.kru.com
secure.kru.com
support.kru.com
support.kru.com
support.kru.com
support.kru.com
support.kru.com
secure.kru.com
secure.kru.com

Certificate

The complete raw certificate details for kru.com in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFWzCCBEOgAwIBAgISBP3Qsq6XBXIM6oHhaJPiJuB+MA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzEyMTYxNjM4NDBaFw0yNDAzMTUxNjM4MzlaMBIxEDAOBgNVBAMT
B2tydS5jb20wggGiMA0GCSqGSIb3DQEBAQUAA4IBjwAwggGKAoIBgQCJuIrfznUM
0x/WdYDgPVCBx0Yq34kXY5XAL5HeybU6wLfHig3mo1m5wjTRIJlYEM2Qc/WBkxSy
LXr0kEt5IhVph7wG53362CZnzCt3E+KwaVwxokdKAlMDB0t5Mj4r7PKPJdQ0xlgc
RSbTIFDGAWf2PB59Vsbr/JgihVegFrDDb5WaWAve/Fly4PA0XyNIr1FoR6eGBWvA
+fJJB2JSF+a9rHjDLN2MhP9DOYhMkE3grpm3Dj55oyJws+3n/KbCErcObHkgcjnt
xHbo/aJ/t+2o5zH2E4MiuyXp/a6uqDap+suobuCoABgeIhipxk2ScFAb14wVpaWn
GVAYZgUPO+qyRpw6/EmcMoBjpULD+XCeKc6LLmk7x/b5UW5tU09UnKEpqvL19mi/
22goOaB+jwwaQO41lPUT3C3w+j7RiuR2ThYTJFom2Hhp08SWk537efZeKnWmTwnF
V5eWR6aW6Uen3FI4oIO25A0G/05LZAS7b5t6jFdwajeta+Ap0xr4o3MCAwEAAaOC
AgkwggIFMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYB
BQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU6ipG8VZYn73t7qlpTGj6jJhk
w+0wHwYDVR0jBBgwFoAUFC6zF7dYVsuuUAlA5h+vnYsUwsYwVQYIKwYBBQUHAQEE
STBHMCEGCCsGAQUFBzABhhVodHRwOi8vcjMuby5sZW5jci5vcmcwIgYIKwYBBQUH
MAKGFmh0dHA6Ly9yMy5pLmxlbmNyLm9yZy8wEgYDVR0RBAswCYIHa3J1LmNvbTAT
BgNVHSAEDDAKMAgGBmeBDAECATCCAQQGCisGAQQB1nkCBAIEgfUEgfIA8AB1ADtT
d3U+LbmAToswWwb+QDtn2E/D9Me9AA0tcm/h+tQXAAABjHO1c74AAAQDAEYwRAIg
GwqlcG4J+GvLPRFx7KEv4rHnSgtBJXvg2Ya9xQ9RvHACIEKVGTPX+ZFhL8qMXT3h
S6x9DLgCdAoxoajdcsaNcVIIAHcAouK/1h7eLy8HoNZObTen3GVDsMa1LqLat4r4
mm31F9gAAAGMc7VzywAABAMASDBGAiEA38WDMd4iJMW5uDS+s90eUZCsm/Ee3ukR
2NVDxbVmSPgCIQCiyaFUJgfnR4BYNq5NDuRpxWPSayQGqJlUrQmOoWztijANBgkq
hkiG9w0BAQsFAAOCAQEAlaVyweUyB/e9PL/MB2WsBwxiGNlx2ZsUnl46AhgZNjO/
1kJXBl58b07F4vjc0O0AE6OmTwuKEaCsFvsrDn1yiJPesaYkYHNY72hwKyO6kin/
Ls0Lsqexq8Nr+1KUVUJArBMA8DrLmod5WfFwVMurIYjyoip2hqPglKiHYGmNd++N
1BdFvZ/pt72EJDWlUAgYYxoKcz+ZkIsvVXsrNiOzCzcEgXiPiWS2hW3O56hhnJeY
XMMhTGo6g6gXM82wuUOLAGcn1dzNyJE8vbOGn13Z0txPV98V778vVzekb5kpjwGH
SCaVoPK2Hw+z3N//vfQcEjQvUVWleueXdyAe70G1pA==
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 434817989751106908422242650307938113478782
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-16 16:38:40 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-15 16:38:39 +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 'kru.com'
 . . . . . . . . [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 (3184 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 3125406197408923580995736966018683840330872472672252039086554087473290307934923277190778398405644599018699666093595096740267263376991091336505784994069056521483745893061129245783361157598536679938285164837098932213264547221009238245028819228038005772278316193540338470192512263743793721106829235972081774007405886233815307762663408613456037502944580293070664892855843215926520425577521748985287692849634114504224378678306375897199847850855967355006969506739908431928769600189973558353779195992151791594379252681856701180676460721973800362561054969285325641626105189970386547274699409012336120097906061028027367360945684020427634321724591838230675792685493923182941751511464551710476192725199330010502635289936193757903917192416001429070688377493647862540582209808077056776388922651419286667483971188376355033355202348015253308868836161887194988815738892247441352782355203335636950763969445213173937393433300082032315544937331
 . . . . . . . . . . . . . . . . . . . . [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)
							ea2a46f156589fbdedeea9694c68fa8c9864c3ed
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (11 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kru.com'
 . . . . . . . . . . . . . . . . [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 (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 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c73b573be000004030046304402201b0aa5706e09f86bcb3d1171eca12fe2b1e74a0b41257be0d986bdc50f51bc70022042951933d7f991612fca8c5d3de14bac7d0cb802740a31a1a8dd72c68d715208007700a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018c73b573cb0000040300483046022100dfc58331de2224c5b9b834beb3dd1e5190ac9bf11edee911d8d543c5b56648f8022100a2c9a1542607e747805836ae4d0ee469c563d26b2406a89954ad098ea16ced8a
 . . . . [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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