kru.com

Issued by R3

About this certificate

This digital certificate with serial number 03:fb:83:04:c1:56:a8:41:2b:44:fe:f9:d5:4b:8d:d9:71:92 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): 03:fb:83:04:c1:56:a8:41:2b:44:fe:f9:d5:4b:8d:d9:71:92
Serial Number (int): 346921885450442300135001533908242553991570
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 51:d3:7b:d1:13:3a:12:42:27:6a:05:2f:9d:10:ee:3b:56:42:36:fc
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 9b:92:bf:7d:37:45:96:0a:9c:28:a2:1a:5c:3a:dd:3c:d2:ae:ee:6d
Fingerprint (sha256): 4c:75:6a:c1:92:7e:fe:11:d4:1f:ac:6d:40:f0:9c:59:9f:fd:b7:e2:69:94:96:b3:0d:69:ef:c1:02:cb:c1:09

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-----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-----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 346921885450442300135001533908242553991570
 . . . . . . . . [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 2023-10-21 17:40:44 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-19 17:40:43 +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 3595879566165403451468861928485981859494404737061109261734358109979228679327834916877313945186394215817439795663586612045079816358066351182917763148858807352125340691362160094414088269698018246700054532464085693069431044760809955670387884320903297595796672859230026789238716206194072083346480564582636194085336169933628140872662591593179133377411397770540723528242322419298156237024714736448221502939282892563740180764100171954094191389907401315701312050880896053161014932974564195773658984355634525251610855061139639252254160964373373724107027525741329332937354509962226414285028994434289350361234329087335539503582665960363162994890197926901294149952253019376281395413799662693005980302097107413729159700457700659222152524315986526532695459053006741728938580426546453604281512867258115901503984842034528575672006725353440122457558212616087656900680205632650235008469289833439762283343647292184106489604290686317108053989889
 . . . . . . . . . . . . . . . . . . . . [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)
							51d37bd1133a1242276a052f9d10ee3b564236fc
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b538a259f0000040300463044022057c78379309d729f9fe68124bb345960f33e114dce0e7e867d90a8802813789f02204cabd21810790d9c7dff821b8bac0f0897f06dd30dcda1386490848d81729e7d0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b538a2595000004030046304402205800dad81ac04d0bace5cad751a2986eb7b9e5053b340759b6127a04598ac70e02206c6bb96b97e1b70a0cfb94225c94d1f5d9a1ae9267ce6d2deeea91294eb7d7c6
 . . . . [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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