klgco.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:43:f1:93:37:2e:40:db:2b:04:9f:48:f4:a7:52:5f:18:1e 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=klgco.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:43:f1:93:37:2e:40:db:2b:04:9f:48:f4:a7:52:5f:18:1e
Serial Number (int): 371569170644563328658601026159475980965918
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 10:c2:de:a3:c2:92:7b:4b:67:be:3c:cf:25:35:4b:40:5f:65:f7:6c
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 7d:de:c8:94:cb:51:90:13:80:b3:57:21:f1:fc:00:c1:fe:a8:3b:3e
Fingerprint (sha256): c0:ab:ae:bc:be:2d:50:3b:d8:de:18:28:c8:b3:1c:3b:b6:32:15:32:e2:f9:e5:82:2b:90:a5:9f:ee:2b:2e:9f

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 klgco.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for klgco.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

klgco.com

Other certificates including the domain name klgco.com

(limited to 100 certificates)
encote.com
trusttrue.com
klgco.com
castlerockapartments.com
klgco.com
growing.org
www.klgco.com
www.klgco.com
45376.com
klgco.com
sggco.com
www.partytimelimo.com
klgco.com
ubaby.co
www.klgco.com
www.klgco.com

Certificate

The complete raw certificate details for klgco.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 371569170644563328658601026159475980965918
 . . . . . . . . [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 2019-12-18 23:53:36 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-17 23:53:36 +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 'klgco.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 876127553824951763728195393440738058083128731143320621857652315527210061694815309322556949610414785492840457087669948941081281835982572956676135078440392922351214256598572740691145311036837242194408203906657299946449566546350977566100505937453220260211666910858445632039647684822403847965952396821937027068389325247133721430967994786132642782761042087786463035155593454491601699489370241477285556669225932894203345384850603136066882289632040413865714301861052315666465447139732487191751254607789936508275780878111085550721315052964964657707764451850830644338900944610148647382660966843649433273247533187956968350349581867859340003393559766727564750852311445176826781986175780682253049332231529439106089232992925379857492327257615677137220931565274356096607990764292024394849336002382469775426474837908543454014296193885047205249946923701157903192790318599657876265809392824113050233420267331246420422117726348608386349152365545734731333355894651423594472481812404010340811701667388551686055067558593369195694923491987293838244713865139099855564067482745728357626133055801513703847995568523788367892903023270753809478107857590910490052138757160033576407470460787586963017781238394788516365478940254198333908968392201029700074484423469
 . . . . . . . . . . . . . . . . . . . . [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)
							10c2dea3c2927b4b67be3ccf25354b405f65f76c
 . . . . . . . . . . . . . . . . [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 (13 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'klgco.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016f1ba550850000040300483046022100ed437b19c83a7b7ba83918c6254dab27ba0354d0f0f4316e0b7bd0484b0e68580221008a4f14417c623a25e4c9fb68bd543c413ccd80b7131aa743b2173001c24951f100760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016f1ba550ad000004030047304502202722d22c135a0aacef18333ffd306faf1ff1e802311d6a878283c659aa3363e7022100dfee1720972b06209f2b6a45a540128baaa421438b38ed1d5a085fdbbf762c87
 . . . . [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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