imo.ee

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:fe:30:e9:c2:2a:e7:7d:b1:84:86:88:35:e0:ba:22:0a:93 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=imo.ee

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:fe:30:e9:c2:2a:e7:7d:b1:84:86:88:35:e0:ba:22:0a:93
Serial Number (int): 347833595680351513161628557847117225396883
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: dd:5f:fa:71:56:33:0c:ba:44:88:30:e2:f9:5a:9c:91:6f:7a:1b:f2
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 64:25:64:77:54:aa:f1:c9:39:6f:79:03:bf:ad:65:6e:ae:a5:d4:cc
Fingerprint (sha256): 42:77:a8:15:fd:96:b3:5c:fa:09:9d:15:68:28:ed:0e:70:c3:51:c2:af:9b:11:fe:64:96:07:88:e7:bd:bb:2a

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 imo.ee

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for imo.ee

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

imo.ee
www.imo.ee

Other certificates including the domain name imo.ee

(limited to 100 certificates)

Certificate

The complete raw certificate details for imo.ee 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 347833595680351513161628557847117225396883
 . . . . . . . . [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 2020-09-07 19:53:55 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-12-06 19:53:55 +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 'imo.ee'
 . . . . . . . . [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 783453903569105685678212369495770672221834746375516318821012164315607694144918624558674993277753706339149833036284397063891157228471989343891800371256759534270275134962277604789071757746513995518574905920570519274148655328367357540745130241144513657648903394140321875491539106572516257038634263208210372068364257539448743441916495914943681121592459590088151309472340137545874671507826495027445757175853266425306014134996406614325225781207456516760724393574042097192864343047337075259127259172260401684585828510950643947607895171043222690264446316266893795418437861129033381348683064197688281394816899599310996510539594915885397028690538968666545003714575082613409989718980244670658696168090189336071221230215197858120415788958610730061323657976753071152104991801516937433529026349611038469359496117447226140167458553074287271447522820390218945458621825600708376978142362627974568465438114074946419067937900553026034091645798613005885365270728926188186545248242764093224455743114887072531952880852294203521717522452520636442084515083699779228373048309259817184645855035627332211234980800754799588156395281492784054076958665684090420086605561150120748865128921378863991704170374163596197473761538486195909330732447551476065188475600111
 . . . . . . . . . . . . . . . . . . . . [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)
							dd5ffa7156330cba448830e2f95a9c916f7a1bf2
 . . . . . . . . . . . . . . . . [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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'imo.ee'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.imo.ee'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007500f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb273000001746a58c289000004030046304402206252661c6b7ea4f0cffc47f0008d4ed293459b7a7dfe53dae0ea4c2cc76d829f02204da78f055b90faa15ab406640ce3919c7939f03dbab0e0dae4360dfce1e4086600770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c000001746a58c2b90000040300483046022100a049913bc2f4823d216ef94628b6923b9083172f4550d9c79876e40fc20cbbae022100be023824498117d3f4c8e91b766d3d1659e27b066f38716de8e8d280ba2438d8
 . . . . [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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