mail.newcitycompany.net

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:aa:a7:37:8d:5c:fb:42:54:cf:79:bc:ad:35:50:32:c2:5e 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=mail.newcitycompany.net

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:aa:a7:37:8d:5c:fb:42:54:cf:79:bc:ad:35:50:32:c2:5e
Serial Number (int): 319407129690650085088213020401234208801374
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 7e:7d:72:3b:03:80:e5:1b:e3:6e:a3:15:70:02:8c:00:af:4e:ea:36
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 29:02:53:0e:6a:2a:41:20:e5:31:60:ea:46:86:4e:0d:77:b1:af:42
Fingerprint (sha256): db:84:e8:6a:03:a9:3c:59:9d:f1:cb:f9:34:71:d6:ca:4b:a5:11:4e:22:18:e2:98:b0:d0:55:0b:76:d2:ea:3e

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 mail.newcitycompany.net

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail.newcitycompany.net

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

mail.newcitycompany.net

Other certificates including the domain name newcitycompany.net

(limited to 100 certificates)
mail.newcitycompany.net
mail.newcitycompany.net
mail.newcitycompany.net
vize.newcitycompany.net
mail.newcitycompany.net
mail.newcitycompany.net
mail.newcitycompany.net
mail.newcitycompany.net
mail.newcitycompany.net

Certificate

The complete raw certificate details for mail.newcitycompany.net in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwdF/owKiLC7RYJYCP/L1
NZcialm4GsqJsN3JLlDsdYZUv8snBdBudZ4rJO++lQP7gSmpjiO4h9Us5qknec+M
TCX+6JyLxI2FDf1sF35/unnT9usiHPYUWEy0VG8hzXG5WazpErYyGgwjC6tI21GB
9yzsvN9ZLBz8dug0Z34dYBU0v9wEkJeecee98JtY6dRj0R9jI0rs2Np2XhlomTAB
V+ywifWZfgjFoIrMNjwB+wJpRCSNL0pbjicKtb9/0sx/lA3Zxw9XdeiU0nO4IgrK
2hemKpZGv3cF7E7CIVltuf/ekgtswy1q9j/znqk/H/iFdPWewVMu+yTLEIeJdidf
2QIDAQAB
-----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 319407129690650085088213020401234208801374
 . . . . . . . . [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 2018-09-19 04:51:14 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-12-18 04:51:14 +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 'mail.newcitycompany.net'
 . . . . . . . . [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 24467300459111593869426001900526152935843622266065206209599243456404400423733918212125263675658250162063038784680440587870483704656279278543300585417968916389007978783208018244774798526833855698270900878978853539390765141463973982833228758011688100569018971767298636185891359009682862869256974590810736453853375666115840746461864136595782924663201832447818599648865002015270233564256229849109791228136538101380082769017589906941509153685861319317494921414418209489887653879677904474345768501425926298274595538513954503450363641395319334047867032844088217019471113187292745785145960101293757835724490551209737782255577
 . . . . . . . . . . . . . . . . . . . . [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)
							7e7d723b0380e51be36ea31570028c00af4eea36
 . . . . . . . . . . . . . . . . [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 (27 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.newcitycompany.net'
 . . . . . . . . . . . . . . . . [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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000165f061ef43000004030046304402204afc7b235815b8bfddf763ab40452ed6aa4c8d618720f79981a9381870877c1b02206b40596d1e3d33b1a93becc5c02b4a9ab25d085dd3651daefda04b734fbd99c00075006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d91300000165f061f03a000004030046304402207f92f44a5f34a3edcb4e7feca6baf4132e926710dc150dc1168a01e60e7c15b802202278bf1d82fe0a8533b00daed8e4a503d75fe22304f86e036bf405b9681b9949
 . . . . [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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