1fk.in

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:16:7f:82:37:8b:62:0e:56:c6:6a:0e:60:7f:7b:9c:39:d6 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=1fk.in

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:16:7f:82:37:8b:62:0e:56:c6:6a:0e:60:7f:7b:9c:39:d6
Serial Number (int): 268992557948173269635548630001522518538710
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 8e:9d:db:4f:cc:aa:74:57:3d:29:ac:64:27:2b:b3:7a:80:5e:95:20
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): cb:d1:0d:7c:b4:97:8d:ea:8e:03:6f:c8:6a:94:08:ec:58:bc:2f:2e
Fingerprint (sha256): 4e:5a:bf:0a:f0:58:ed:93:c0:ab:4a:86:bb:34:75:50:cc:7a:e2:d5:dc:3d:a0:98:6a:1c:e5:dc:28:cf:06:fc

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 1fk.in

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for 1fk.in

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

1fk.in

Other certificates including the domain name 1fk.in

(limited to 100 certificates)

Certificate

The complete raw certificate details for 1fk.in 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 268992557948173269635548630001522518538710
 . . . . . . . . [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 2019-07-08 22:10:20 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-06 22:10:20 +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 '1fk.in'
 . . . . . . . . [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 930961116603910600987983092420781346909378552506369537949461377907498606423070760990742141400599048299301432152358228580183129315572201371141174697273371869089101977277808242479669307280981244063051718344506530843058482850696103092939336697008276647985336203355830671701899948669460045540871684791626013678656869274861197575142524277776440235117499353259602225963333055753350363823044188088324087658241008415992050893314752582521242192271717228346465689945369042316998962866616411693204295560276808633142315864336967201930440399300496286155949596007234989703001446079311701044424515845629632593421956544846061457268836806114504101799421320921620933464736602386188510798031484616825909219798532224616818037865114122487629134232002575940818379996099958860158552458813492486434744344824275460986802104539591550078401335853201846365953467955085060896617773796128001528366529106992388678891419749443618223359475117837929555964463974308337899742263376172965151225852707359695342924745772794571887141382124290154921487860829224803727441016920570826695537998747858555700434989835223056597070399934689109414471204289207071937367493186563921419700621864363970000232533759971623952951261003588722009422226326277810843689166544216201675221080387
 . . . . . . . . . . . . . . . . . . . . [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)
							8e9ddb4fccaa74573d29ac64272bb37a805e9520
 . . . . . . . . . . . . . . . . [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 (10 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '1fk.in'
 . . . . . . . . . . . . . . . . [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)
							00ef007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016bd3da31ff0000040300473045022100f27b66d50d85c9ff5e88ba003106541ee4de2465a1ed76eab69f3d934e7b629d0220080fc5f7187dc03134c28fc2b2cf780b295c74933eca5e44f462347a53941e7e007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016bd3da3419000004030046304402206df075c45548dad9beae060f8e6a7842d929fec842700325f04ccf15f44f2369022071101bccee977ba19141835101972ae43dec32a6ba967beaf28bfe06579aea98
 . . . . [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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