mail.segfaultstudios.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:cf:eb:04:1d:d2:83:2d:2e:80:41:39:20:77:5e:d3:97:da 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=mail.segfaultstudios.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:cf:eb:04:1d:d2:83:2d:2e:80:41:39:20:77:5e:d3:97:da
Serial Number (int): 332087697700980281037670324355377233369050
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: a4:90:c4:14:46:3a:3d:43:34:52:0d:9d:7c:4a:f7:d4:19:b6:88:9a
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): c4:f2:6d:c1:05:bc:29:c9:32:9d:da:61:3b:34:de:19:46:46:ab:95
Fingerprint (sha256): 98:c6:f0:9b:00:cd:2c:da:a3:bd:09:7d:b9:70:0d:2b:10:1f:1c:89:a3:fe:de:fa:a8:16:3a:af:33:44:0b:44

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 mail.segfaultstudios.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail.segfaultstudios.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

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

mail.segfaultstudios.com

Other certificates including the domain name segfaultstudios.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for mail.segfaultstudios.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxZSIRX432BFvsVCjdj0W
9pwPKVF9emezYNqujrbvAc9vRUBLKXlDqLkQuTo0Imbqn/uQQW8Y9kwA+xaa0SbV
pCWK3KCRIiqIOsBKNQ4a6nYJgQeXUjg5uQVIx2/HhxaerkpbvAm7nX08aJaMj+8+
qUzgcXx31fCHjmMz1EcWtWk9mS9tnI4NOhmfoGDdFx4KgbOIOSabObzH/J5iG2ju
rV7dedwSE8cxdn7giaTJT6Kw7NN3Od+KLY6PEFJojqO1lAYEEZg7bayiye92w/EZ
WUt+FShH+pfxXrN7U14yEm//EmN4V8Mit/B4kfHAw4O3pMsxbu12Ff989n5uqB7v
i2gQVqOsv4oKnSd7OuMzHGUTZeURWvVETLcPwR58fZ9mYbdL6zKO/wXTupButEuM
+EfqIq2CqoTRML/fFuPuQtCdp+Zum3hV77YXD6o72gX+L9UoD4RAk1JKIPG48Ov5
wVMAWxXEJAIsfcPVOL/HBnVh4c+7oR8olHEnDA7fSzyH0KpGe9mzP11fMoevoYUC
pQ9Fh/fxS/brlAk3d7grCzLO2wljONq8DHY7efeR8nn8v3stAIq7pcrFOXL8I5vN
O1xlwaENN6XA0E9msX458h5oXOEq02Tu9aFYQJPIRPgdVqxa5PE2Mxc78EV6YeCh
IVrx6rm3RNkdSnqQ5ojp1msCAwEAAQ==
-----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 332087697700980281037670324355377233369050
 . . . . . . . . [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 2016-11-29 06:03:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-02-27 06:03:00 +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 'mail.segfaultstudios.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 806056908583361862935005974555135700062806822653977650289894607705145635284195510262059330923873747764818743818174482519429209600404433161156632318752665496912803831326654561957059338284415145364933920506496009068215612944170797396135929701267598008359395001978759911712097819106937371294280226560300600084171929959533516007764562715138121417009204096154852509924058809541207834494234439073792946364215880641303851329300478625597147890211389471853492411744522416129904929595344529944498027769131526522030985173026821481163106131044431130155640342573916564780031388325562179282149368396272373747154487174896483639660156833102723776368147771877011337436874830639876681126676159563651403936253969535745892279934490861191020532187796223373484459295972309686367828755013066066661062825578409411471440965349367604990477310719927818350620336443744870777436636684162239904688790895072178162072900748920839367097814499900098574115469429212024245994344201428177973491161144336677821149450471620450042933392974153165204178291133499781673521682842733635963679483775060419850601633180065586236633757795012690788785401110903264930350935590564332534122529037288417531151474262906726832621034800601718280511171192075130418737690193034740381896005227
 . . . . . . . . . . . . . . . . . . . . [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)
							a490c414463a3d4334520d9d7c4af7d419b6889a
 . . . . . . . . . . . . . . . . [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 (100 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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.segfaultstudios.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 (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 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		0089e7cd95f7a50a513912475359bdec147df296054d6cdaebf94de8ea1e08d7cc60d86d7a39345a2efb19e0a109900f5d5357feaa66aa92d135d5bd3ae867f9ca05c2f04dff6c459ba5bd0a38d0275afa01fa94a10d4a5bfef2836903761286b44c47bbbcbed479544029a2aacd75f0479ff72a42f8226318be5faf47579d4808b8fd4301628c6f1a4c59821dab34ef49d32d525a846388d10074a2d108defcc4120b3ef82d9cf69782249072cc61dee91d0d4da2457ef60deb6459f55020a2111d192fbdcaa1ec2739afb0daf5f90a5c2d58cdcb56ece6c43535abf01a0b41d22677e3b480fb0683c3b5cf5c98f3584612b52d5b8d3e0cbf6ca78abae1f1be7d