kitenet57.ru

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:d2:14:db:74:1b:67:49:01:bc:7d:2b:b3:70:2a:da:c5:d1 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=kitenet57.ru

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:d2:14:db:74:1b:67:49:01:bc:7d:2b:b3:70:2a:da:c5:d1
Serial Number (int): 332823878876536174339163800959786375890385
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 4d:d3:fa:22:c3:8b:4d:9c:5d:46:ca:69:72:2f:0a:46:64:3f:b0:04
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): a1:9a:b5:2d:f5:18:3e:89:79:dc:bc:99:0a:14:43:25:d1:97:76:55
Fingerprint (sha256): 1f:f3:e2:98:84:c5:41:b6:3b:d6:31:2a:dc:f6:7d:8d:ec:e1:a1:04:ed:f6:05:7f:4a:33:35:38:ee:72:df:48

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 kitenet57.ru

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for kitenet57.ru

Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

kitenet57.ru
www.kitenet57.ru

Other certificates including the domain name kitenet57.ru

(limited to 100 certificates)
vidikov.kitenet57.ru
xn----7sbalmatlkyb9ayee.kitenet57.ru
xn----7sbalmatlkyb9ayee.kitenet57.ru
www.xn----7sbalmatlkyb9ayee.kitenet57.ru
www.vidikov.kitenet57.ru
www.vidikov.kitenet57.ru
kitenet57.ru
xn----7sbalmatlkyb9ayee.kitenet57.ru
kitenet71.kitenet57.ru
www.xn----7sbalmatlkyb9ayee.kitenet57.ru
www.vidikov.kitenet57.ru
www.vidikov.kitenet57.ru
xn----7sbalmatlkyb9ayee.kitenet57.ru
vidikov.kitenet57.ru
www.trikolorbiz.kitenet57.ru
www.xn----7sbalmatlkyb9ayee.kitenet57.ru
www.vidikov.kitenet57.ru
vidikov.kitenet57.ru
www.vidikov.kitenet57.ru
trikolorbiz.ru
vidikov.kitenet57.ru
vidikov.kitenet57.ru
xn----7sbalmatlkyb9ayee.kitenet57.ru
xn----7sbalmatlkyb9ayee.kitenet57.ru
www.xn--80aklcr3ac.xn--p1ai
xn----7sbalmatlkyb9ayee.kitenet57.ru
xn----7sbalmatlkyb9ayee.kitenet57.ru
xn----7sbalmatlkyb9ayee.kitenet57.ru
www.xn----7sbalmatlkyb9ayee.kitenet57.ru
www.xn----7sbalmatlkyb9ayee.kitenet57.ru
www.xn----7sbalmatlkyb9ayee.kitenet57.ru
xn----7sbalmatlkyb9ayee.kitenet57.ru
xn----7sbalmatlkyb9ayee.kitenet57.ru
vidikov.kitenet57.ru
www.vidikov.kitenet57.ru
xn----7sbalmatlkyb9ayee.kitenet57.ru
www.vidikov.kitenet57.ru
www.xn----7sbalmatlkyb9ayee.kitenet57.ru
www.xn----jtbajbkhsbebtfeske.xn--p1ai
www.xn----7sbalmatlkyb9ayee.kitenet57.ru
vidikov.kitenet57.ru
xn----7sbalmatlkyb9ayee.kitenet57.ru
www.vidikov.kitenet57.ru
xn----7sbalmatlkyb9ayee.kitenet57.ru
www.kitenet32.kitenet57.ru
www.xn----7sbalmatlkyb9ayee.kitenet57.ru
vidikov.kitenet57.ru
www.vidikov.kitenet57.ru

Certificate

The complete raw certificate details for kitenet57.ru in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAp4hqz/8bekUQfeLM+NNo
bytVsRoMxUGXggPiWEqdmbFQmydOcoUwspVvsejNkY/HWPDtZV/k9VWAKcxHPRkN
fWkpKJW/CH93+jgS2LczhkUGahRu1pBuJzQFQm29SNDzDzNUaAeCy1ofqChFE+4O
EK5VMDDC6BH8mDUvt/yanx5GQ+qQ4taedkVq8EArcDEWCAe1DHLomFl7U4je6KLN
QUdHN2cNX7uRuBQEcn+2dDCBco6NMCj8cLWJNB3rW1nRi1em5+m9rcd/WK9ZGTS1
PT/GenB0Fp3M39uoHlNw8Eh5o7dMCy4Gf09oUbqXdZDrS8Y0ztUiLRyQgKWDAw2W
dQIDAQAB
-----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 332823878876536174339163800959786375890385
 . . . . . . . . [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 2016-12-15 21:50:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-03-15 21:50:00 +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 'kitenet57.ru'
 . . . . . . . . [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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 21149066775720461683130104217897912483402872395079950315143804744972265306759498690044680727367730887926014554674373509363046668307556818182197483262327549635461944989113453822558723098775562887336669750525984228576198072263894259539358264493735388658470895857333393398710317508159669383580605305956403998929221816866469430719611440892711195756788512176411533283389641137155295139758419315621921092725378984506280941120161847647495034109548516824255138192214825313235617452187222058100657844801343051722728644594557875022141042242983613953942668977734475049851237411516208113604522573550559456189503367421476563949173
 . . . . . . . . . . . . . . . . . . . . [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)
							4dd3fa22c38b4d9c5d46ca69722f0a46643fb004
 . . . . . . . . . . . . . . . . [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 (100 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 (34 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kitenet57.ru'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.kitenet57.ru'
 . . . . . . . . . . . . . . . . [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 (246 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 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . [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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