witqualis.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:e3:91:c9:1f:ff:00:ed:d4:6b:3f:59:4d:09:f1:c2:83:52 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=witqualis.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:e3:91:c9:1f:ff:00:ed:d4:6b:3f:59:4d:09:f1:c2:83:52
Serial Number (int): 338774737446349316120860619692599226303314
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: b3:ea:64:f5:e9:13:a8:ea:9a:cc:bf:3a:d7:42:dc:3a:c2:e5:08:dc
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 78:50:e5:c0:c7:73:61:f2:b2:77:f2:61:af:74:47:8d:62:d7:e1:cd
Fingerprint (sha256): cc:79:42:45:ed:87:67:cb:c5:86:79:a3:2b:3f:89:e8:86:fb:90:47:23:cb:57:29:98:c5:4b:13:d2:7e:cb:31

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 witqualis.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for witqualis.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

witqualis.com
www.witqualis.com

Other certificates including the domain name witqualis.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for witqualis.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 338774737446349316120860619692599226303314
 . . . . . . . . [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 2019-10-03 13:28:17 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-01 13:28:17 +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 'witqualis.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 720480657149861103936162912707170904737663765993887255062489176240832657064351118907753583263198583668261215312193424744572068839546882294269245134558344702686136951633957597105097111368710600953948501879209036135039729500298963412278645427175693621239391436781463203702734960598960370080336430265207109113732252192475320310243334984339086715203182090627155525159929528737398876132983900327981880256484826844808375642617846467161648634547413892204050627010453460085556897244281267274918256158713344788610998126777542299057649128362523266830302645303463119748314127294695939492427696425184460680407137817182070531172033482549263330868008851182813248239698713445878563326837784913534042269436543366528949998642193374032097417901578014607252931601836684254933944278474656330774880926211206272691054109944731891745212691842231587712563332926180065519712177415365417177385961127370156484489787980305431630240695192269328594235940632745575248949029264024483968917687247258984958977894933052996074656473097042264384520104730032506732021984551409131866537269793453464632381019865666278882340601598825187065008261419396843671877599740489886430530604001887495485572009746910776990553367975075945105959258276345406535549335079246936222697218737
 . . . . . . . . . . . . . . . . . . . . [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)
							b3ea64f5e913a8ea9accbf3ad742dc3ac2e508dc
 . . . . . . . . . . . . . . . . [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 (36 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'witqualis.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.witqualis.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007500f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016d9205833200000403004630440220409990ab170a153e794c13b2152a55d85550f049c37a613081c0b36e4811192502204065fdec103223fbdcdb901132d1714a070c35f808b5ab7d77014cf58b183eec007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016d9205816900000403004730450220474f2d44d0e20b2b22b11c27bbaa5ed1c82054abeeec1fa633eea83482f89703022100ceea42e10b62f8332a3a1327878011d982dbbc580e02783bb4affbd19b96487a
 . . . . [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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