www.rkoco.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:0f:66:21:6a:e2:d2:49:95:64:41:0e:3d:69:0b:64:51:77 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=www.rkoco.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:0f:66:21:6a:e2:d2:49:95:64:41:0e:3d:69:0b:64:51:77
Serial Number (int): 266576848068367273484600335119245098897783
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: ce:6e:18:d4:c3:da:e1:99:b6:07:fd:39:29:3a:a0:50:69:0b:33:aa
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): d1:16:6a:49:af:29:31:63:e1:b4:7a:f4:bc:b4:94:7b:e5:7b:f5:da
Fingerprint (sha256): 97:5d:a5:e9:84:0f:f3:da:7d:c7:74:33:ca:93:85:98:a4:12:2d:c4:97:21:66:09:8b:16:d8:8b:22:35:80:c6

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate www.rkoco.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.rkoco.com

Public Key Algorithm

RSA

Key Size

4096

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

www.rkoco.com

Other certificates including the domain name rkoco.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.rkoco.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 266576848068367273484600335119245098897783
 . . . . . . . . [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 2019-12-26 05:04:32 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-25 05:04:32 +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 'www.rkoco.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 741103306449311887408586216228924241174737205474460743068077780263935054401505575334079951867036631496694778721706797928536025267354876827826637373446854452911354766818817878776095388886742875535954099874944031525773575734547595235177877215210610977844809800459632409418092393763866043130171473073764840720803289472080361255998920480606175410241031169350496752091502287410663968123789725280352743218476065689721638876266454372950339797907826542347002870968669890363620398234286289804628794912904304295292688007564883217129919309651148366271266886982767951515992775740783318056683576348046821709637988144203243447675797515592566120051730356846911797450270441936568912611512037312121506058090488426703484737448147181144253106394036589504666903057810351541785841180305054941771648368968653659487052560590606176662433060167510871219725045574763215476014366411904755744583242972782051898343515989689921873530561807606357824246919896246615124459507248832368629083799210367249868086692982242443293324605622933313177628743338110960886649467053465080043074330458897673741787835739843433821792465953787179976797364548834782604349489047856483924468094798860242892549263683102004062690334660565756383589363776264864137898978900692437635164796481
 . . . . . . . . . . . . . . . . . . . . [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)
							ce6e18d4c3dae199b607fd39293aa050690b33aa
 . . . . . . . . . . . . . . . . [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 (17 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.rkoco.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 (69 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016f40ce815b0000040300473045022100fb7a65b7138aa305827f9e207139f5d47221fdf7bfcabcc9e8b94e692dcce7960220680878875159d8527608eb1deacb3339f3e2ef49ee24db926b592bcce257659c007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016f40ce833a0000040300483046022100ea78eb65e041a62807c4e66538ec25e2df637c11475221bd779d6667b52e9e9d02210088ab971470d171f3cc72fba13a42a3657cb54d67ff57146670c74737c94719ed
 . . . . [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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