*.is-a.dev

Issued by R3

About this certificate

This digital certificate with serial number 04:7d:03:b0:9a:7b:f3:d6:00:fc:4f:92:cb:6a:43:9b:3f:54 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=*.is-a.dev

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:7d:03:b0:9a:7b:f3:d6:00:fc:4f:92:cb:6a:43:9b:3f:54
Serial Number (int): 390989344253704357920476813297370235879252
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 30:c6:ef:18:21:f6:2a:80:2e:1d:93:48:3c:c6:bd:9c:c7:0e:35:c6
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): ed:73:c3:c1:88:71:c2:2c:38:ed:c8:3f:bd:72:bc:ad:bf:b3:c6:17
Fingerprint (sha256): 3c:5a:ae:25:cd:a2:fd:8a:32:98:81:ea:f2:c1:e1:b1:1f:5f:33:39:3b:07:f2:06:5d:c5:f8:54:8c:14:05:4f

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

Revocation information

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

Check the revocation status for certificate *.is-a.dev

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for *.is-a.dev

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

*.is-a.dev
is-a.dev

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Certificate

The complete raw certificate details for *.is-a.dev in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1ukrWPU/YYTKDq25brLP
lMQBMEnY5PoHffcjDTS+ZhxSUkMDIkXg3eloDuVQ4k1FQyBtjxOfOu9HouhAUa+3
Av32hfR+m9ahmYpQzoNbH9Jc6axJUtmRKujYHw9GbUkK/cH/0ZLmVtdbAVB8h6m4
WxFazx06UauZOmrRFCPuiRjDMWWRCQlBDPJI+Wp2gjRx4A+Qw1MSHMyz4PxW8ztL
SYjYg6yER0KvSn2S+citdOmmR4GWcaA1CFmtiWeZl82+S5jjRSVU3dkAeGrrIkd9
VOeR5PvV+h1D7mzFfiJZ2HvnJmkJhjZasZAOskR0cNQg451hllqLQUHrpAYeohO2
cwIDAQAB
-----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 390989344253704357920476813297370235879252
 . . . . . . . . [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 2023-06-22 08:22:25 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-09-20 08:22:24 +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:12|false] UTF8String '*.is-a.dev'
 . . . . . . . . [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 27129977342823107338166954404307220969194105324070152702387543088244000611430149735821526510576923996433627488431552407281437733166610114004335756907148121781215980574173327479954377321348190601879512054560507292759000517594159523438002807639080707081463879031790505661760724094507895012757047855551263304653980696809885918509862059243176754594080142763724403023478325979010869228694171188754355788018946304608732999819817863173731889070319886639994140308946918006292561044903815019057721197269629793960791602869848647895147672456352099482283816296963274371965988522733850700708679467208647902949403587971085250049651
 . . . . . . . . . . . . . . . . . . . . [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)
							30c6ef1821f62a802e1d93483cc6bd9cc70e35c6
 . . . . . . . . . . . . . . . . [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 (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.is-a.dev'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'is-a.dev'
 . . . . . . . . . . . . . . . . [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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f2007700b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb49900000188e26983c60000040300483046022100f4750ad631b56bb378fb3c519c1d6f0bef45c41ed7d3e24725f15acc88b89cf1022100dc9bdc8ff31e9ad80365aaac2e9af1188c2d1cd34082bedbe54d381091ce70930077007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000188e26983d500000403004830460221008f9292ea4e6d0143aa4d7c8a03fa5069cb5652b74a93d95b482111b7710b1465022100e22e49f1a8bfb3c018c980f343a22461a6a3b622a53e13c1dd0990dfe3a51102
 . . . . [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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