a42.io

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:b1:f9:1e:69:ec:d7:ba:3a:14:1d:8a:00:98:29:c9:72:a3 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=a42.io

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:b1:f9:1e:69:ec:d7:ba:3a:14:1d:8a:00:98:29:c9:72:a3
Serial Number (int): 321897972428560667218445042995601758319267
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 60:01:ec:c4:e3:07:6e:dd:fa:dd:63:3c:a2:a4:e0:58:16:dc:ae:97
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): ee:84:2d:c2:5b:ce:d2:ff:e2:1f:80:38:f4:7e:eb:50:6a:f6:c4:d0
Fingerprint (sha256): 12:b5:71:27:2e:fb:73:71:a0:b3:cd:c8:73:a4:21:e8:46:09:bb:8b:36:47:8f:8d:6e:cb:6f:6d:98:e6:6e:86

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 a42.io

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for a42.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

a42.io

Other certificates including the domain name a42.io

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a42.io

Certificate

The complete raw certificate details for a42.io in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5mBXmc6a9CC7QsA2JcqL
G6PrWXfdT8WCQmrXWNpTR9vitKYMagD6VHiBcquygUNhkitsIQdO9QxFWKYIwCD8
3VSiXyttXz1XDsMxggQ6lzt3voAAl4x5hqSIy2UngSSTtIMKQi5q8dwViZp61SmW
FKfUokc+R1XTUO1uFRRayYv/enoMS+ZrQd80L5/v2WT4WOo9A2N7sJlPLv6RJNBe
13rrnu7cf8XA4BXBd2ULNiRjRlIDrJ6/A+Q0WtDed+FKhUzlhl8T0cU2nLn88ey6
2YMRkubilZQuaTy95oWo1Jn3Pm8SXXbGIgU0W7WZPrSHGaO8kgQ4FFrXIlFljRiZ
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 321897972428560667218445042995601758319267
 . . . . . . . . [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 2018-07-20 02:06:26 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-10-18 02:06:26 +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 'a42.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 29082318247058930860215213448771055718099212520897476041017709166025035229472671007376476761803723828110568869342447432813756485161495235010144890098771089579227135770824716264480663894447520247243147525534361670696880631646090770174064254777539935380941692706717531197662499464880082532580912148379285534276356387425459651970410638915555420931982865802922414428530463848736070326282083179689245678436842963643911904796660527924608477993282879200919962442086276210047005836077136660633809822278872731108271059083857056597854899093614609547235348549050472274922714572319251825002136255800382069035568154139779759905099
 . . . . . . . . . . . . . . . . . . . . [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)
							6001ecc4e3076eddfadd633ca2a4e05816dcae97
 . . . . . . . . . . . . . . . . [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 (10 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'a42.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 (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)
							00f0007700db74afeecb29ecb1feca3e716d2ce5b9aabb36f7847183c75d9d4f37b61fbf6400000164b5a71fc00000040300483046022100f22107ac84834b5d2ee87b37df6b8242d25a1ca10378155c2f3fa5884ceb38ac022100bd5fdc51634b8d7e0fba9e86e8be2e35378ac220a6c05e3a3a7514dd367131e5007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000164b5a72071000004030046304402206efac0b445a5ae4d0b0dede80d684737cb0b834690d514790884907e0878072f0220408138250e7e9ae99a800379456b00c6b5ee51ea7f326fb6c7ddd37cd10baade
 . . . . [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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