nasatrgovina.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:40:45:8c:59:73:04:9c:45:3d:53:ae:eb:dc:45:fd:51:d4 was issued on by Let's Encrypt.

With 8 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=nasatrgovina.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:40:45:8c:59:73:04:9c:45:3d:53:ae:eb:dc:45:fd:51:d4
Serial Number (int): 283207374745737275946206810879649856180692
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 0f:d0:30:43:02:f3:8e:f8:cf:93:7f:31:bb:43:38:14:51:79:ac:d8
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 54:75:98:50:76:dd:3c:60:59:0b:31:d4:56:f1:93:c1:9f:1e:cf:c0
Fingerprint (sha256): a3:c9:f7:1c:fa:ce:a3:c5:e6:ce:5b:c7:65:58:fd:bd:3e:d3:e0:35:d6:83:49:1d:ee:c3:ea:c3:eb:d3:b0:f9

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 nasatrgovina.com

8

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for nasatrgovina.com

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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

cpanel.nasatrgovina.com
mail.nasatrgovina.com
nasatrgovina.administracija.info
nasatrgovina.com
webdisk.nasatrgovina.com
webmail.nasatrgovina.com
www.nasatrgovina.administracija.info
www.nasatrgovina.com

Other certificates including the domain name nasatrgovina.com

(limited to 100 certificates)
nasatrgovina.com
nasatrgovina.com
nasatrgovina.com
nasatrgovina.com
www.nasatrgovinabl.administracija.info
nasatrgovina.com
nasatrgovina.com
*.administracija.info

Certificate

The complete raw certificate details for nasatrgovina.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA8kh/S6mNyCKL1kxkKayD
oSvAEeKVNumXW9J1y1dvN/xVUiE7x8El5H9Trp2nqfBf4f9pxDYqc/q0P1BLjhln
o/9SfrUV1GtjSw4AQoQlyR+slqUFhYuyQ9TyvPME86nhovCyF+GFDab7YVip3Iup
WZRxoiBfY/jvkW6nc+MYmLVsT4nkluNPWN/JY/iuDyy8TRj6BoGY1h2r4Af0w9r7
C7CROinQ9IQAshKBPFp8VrW/fDbBeijYnVHzYnCKO8mWTMqy2ZFzhsq3Qu1SKfVI
slra8VtGkVa5uBe6Z85kNOoz89MTJvUKkEK/VPh+L7tkppc5A1yfWljqfmDHO3hr
LQIDAQAB
-----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 283207374745737275946206810879649856180692
 . . . . . . . . [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 2019-11-03 03:57:34 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-01 03:57:34 +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 'nasatrgovina.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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 30585419527316360707353802970851779951378461770682073659517919860388579232531838097972042504003933402507283903102468106034697584010659256070299481770247255514074159197855991852904072062537037788161678527929880043161060085097954403385622170102302723901180445468326325515093626960237833858369124711060140645052859513041862196151455018535011705289150315073528448477857856016299311390000569536201244179349770433025157956080517321211427218156197752104763473722655730804483914300592074000572864938240048107840127214489199881020975547720986706629991487269548358633399926370888246935399790423521461142147876968282476623981357
 . . . . . . . . . . . . . . . . . . . . [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)
							0fd0304302f38ef8cf937f31bb4338145179acd8
 . . . . . . . . . . . . . . . . [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 (215 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cpanel.nasatrgovina.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.nasatrgovina.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'nasatrgovina.administracija.info'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'nasatrgovina.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webdisk.nasatrgovina.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webmail.nasatrgovina.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.nasatrgovina.administracija.info'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.nasatrgovina.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016e2fa022a0000004030047304502206ea888361e01f37519316d4bcc379ddbade4e3050e2f1ac6e4211f70a3d79bab022100a763780f72cc6b63cabbe0185c1183964cdfa6e2f6afbcc66a126d6d2a39448f0075006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016e2fa022d3000004030046304402201fb6f1e62a750527429f2c8b38d2f5e1944d66251cf6a5111b707a4327082bd3022068e964bc68d5e2d6ba89ced23f5b5de30d23ed41073a8859c4c32054dfa62f69
 . . . . [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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