bluspark.io

Issued by R3

About this certificate

This digital certificate with serial number 03:c6:4c:b1:5f:d1:69:c0:d4:fb:15:60:0c:5e:20:a3:23:d3 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:
  • 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=bluspark.io

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:c6:4c:b1:5f:d1:69:c0:d4:fb:15:60:0c:5e:20:a3:23:d3
Serial Number (int): 328814708753270497334402721462113731290067
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: bf:0b:43:fd:04:88:41:b0:9a:22:62:80:26:74:4d:fe:98:dd:fc:81
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 82:ce:b8:72:5a:3a:e5:dc:4a:5b:ac:8a:d5:48:05:ca:c4:67:a1:69
Fingerprint (sha256): 1d:a5:7a:02:19:0c:77:7f:ff:d4:93:a3:65:66:66:55:15:45:f3:cb:40:cd:9b:49:60:3b:7d:ed:c3:31:51:d9

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

Revocation information

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

Check the revocation status for certificate bluspark.io

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for bluspark.io

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

bluspark.io
www.bluspark.io

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Certificate

The complete raw certificate details for bluspark.io in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtBH/Sfh+TTgEKWoMylu2
XTjBss5BdGDgsgjvfX+BEb/Tyzz4bNAXe5aA419Oro2AXbhSf7EB1kg6E1U3Nz2k
lXuRE5I2nu39QMK9k3e76Tn7mcTsziVEXjXOJe4Fu5z1zTXe7OXXzNT0PDp9wbP2
1SAo/fHfLqSfhQINGMTUfumuouoTlTw5hnWXty9NrWgac4hlel4uK5JyCEsyXhCB
p8H6qx3DbQKR7CHmDh2D+l79HKqOKlugu5n+OOY6yHGg3Hbm3FrUlXRPas2pdQpk
nD3zEIMTKeaDYW/IIW2v0Ao/874q4TSsY42gP+Lh5bynvB0xyu5w98anNoNTufQl
HwIDAQAB
-----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 328814708753270497334402721462113731290067
 . . . . . . . . [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 2023-10-16 17:45:34 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-14 17:45:33 +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 'bluspark.io'
 . . . . . . . . [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 22731769655048984849333094539372522195842460853237652641410152756062655741143856158842740301272340514319230032644629002323736634210740586587322185736788522096316869785447457901692922737512765352839453307947181712638671297453448354785857886487977039619851281876369012594827667754233861814213983241435010322896393162509555873062113364499219063556837240773061227236487986398418393917726589120866019752919062609373079047411424250943290843949652251964392798333396737233876002410402100773528581235082664018579623364749197683071032302126824895661841706713532008383273890176750017669169440941792605737727467140475982244488479
 . . . . . . . . . . . . . . . . . . . . [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)
							bf0b43fd048841b09a22628026744dfe98ddfc81
 . . . . . . . . . . . . . . . . [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 (32 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'bluspark.io'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.bluspark.io'
 . . . . . . . . . . . . . . . . [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)
							00f00075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b39cec8680000040300463044022018f07b2df786677857a739a2095b72d78dabb9d7930018fe24a1c7f7c2e2545f0220536aca05a62d62e0b2afcdd973ff5d5ac89b34a7241a6237ebd9e954fb7e9890007700dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b39cec86f0000040300483046022100edaec4c6b6cf67ddf65aed55459970f1b1e3c43c24b490c90170ed0712f42d16022100a8eccbc52243315d878587af4307d8e09272f7f36bbd160be8485b439677400a
 . . . . [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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