www.cleanstation.co

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:42:dc:50:03:d8:56:c5:b7:fc:05:52:0c:bc:03:f3:e6:fd 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=www.cleanstation.co

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:42:dc:50:03:d8:56:c5:b7:fc:05:52:0c:bc:03:f3:e6:fd
Serial Number (int): 284088339632871409458812779795607517914877
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 67:03:a6:eb:49:bb:49:29:a7:07:02:a1:a9:be:36:7e:8f:09:06:61
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 63:82:72:c3:77:2c:7d:4d:b0:db:99:28:c1:c1:78:81:fe:5e:65:72
Fingerprint (sha256): 0a:9f:40:e7:b3:d2:d6:d2:04:df:6a:59:c3:64:86:6c:7b:59:45:b1:b5:33:fa:f1:1c:c0:19:f5:4c:f0:8a:11

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 www.cleanstation.co

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.cleanstation.co

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

www.cleanstation.co

Other certificates including the domain name cleanstation.co

(limited to 100 certificates)
www.cleanstation.co
cleanstation.co
cleanstation.co
www.cleanstation.co
nextleap.co
www.cleanstation.co
cleanstation.co
www.cleanstation.co

Certificate

The complete raw certificate details for www.cleanstation.co 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 284088339632871409458812779795607517914877
 . . . . . . . . [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 2020-02-17 07:05:08 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-17 07:05:08 +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 'www.cleanstation.co'
 . . . . . . . . [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 641543276939924818726441674823611829879284362430591682760785457389003179205810238288077274335874218116109709719331160818018214044340193309119279100919901231736433519922845976802747756220155124933416856711464065001881867844612630171331820936757677273255734663265114344814016671563503531372505036893580794117513005583487147489017750406628628579316598106677271763118088996067705798626988647723533095127664623612115177854497091169108467657513047495231102320954380452974877371700843358202350642531459586094224656385840192849106487790761525870582536693953584455123098481356518626497313700264231828089013395305044908903198901185733092132800937683366467236242122422342886202621264188048256795896692659547466574618269719493710596733998758622072514696058696423074240667736266837841226532359631062719109579202981277443988239275707709423383630910997799360685007026508727805331458576277176126137772460423408652852122908121027705744627516451313821186870272106578133327654756591778059894893316390112570143718382403741260270902288264714419549576148079025031278432927901309146033128626492111470751105731375681933682557331358508673061883623256216095056896560201188689430286537814159371173742312289912494473517351205092618973121451986867503552702571449
 . . . . . . . . . . . . . . . . . . . . [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)
							6703a6eb49bb4929a70702a1a9be367e8f090661
 . . . . . . . . . . . . . . . . [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 (23 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.cleanstation.co'
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee0075006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d91300000170522df4f9000004030046304402205ccae31290988f70f120f1045b2476f1337e4889e3a4b22061416892eac8c5b3022017f6c10b5461fbf109face63a85f065ff60581f48291738f2b9f86e443323fdc00750007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c00000170522df503000004030046304402201e66053b688285ce10a3e1c4e0a4d631dec60594bd87d7bd33be8594f17d671b02206c3c1bf38b321f85ed4be0c62019a01770592d23a88a30fedab2e72c904e0060
 . . . . [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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