mma.napubcoonline.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:fd:29:97:a8:43:be:2a:2e:92:0a:4e:ad:4b:04:73:24:f2 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=mma.napubcoonline.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:fd:29:97:a8:43:be:2a:2e:92:0a:4e:ad:4b:04:73:24:f2
Serial Number (int): 347483582423742944954476085169932802925810
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: ef:52:35:dc:af:4e:fe:39:0a:ea:3d:30:46:1f:36:a9:f6:36:d5:3d
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 59:6e:16:0a:74:30:2c:23:7d:b8:44:0f:ad:3c:96:09:37:51:43:d2
Fingerprint (sha256): ba:c5:6b:aa:f0:87:10:99:75:e2:e6:da:c3:15:22:a0:ad:f6:62:88:4d:e3:96:92:d0:21:3b:fe:12:9d:ce:a9

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 mma.napubcoonline.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mma.napubcoonline.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

mma.idc.dlconsulting.com
mma.napubcoonline.com

Other certificates including the domain name napubcoonline.com

(limited to 100 certificates)
leftnews.napubcoonline.com
pubweekly.napubcoonline.com
leftnews.napubcoonline.com
pubweekly.napubcoonline.com
mma.napubcoonline.com
leftnews.napubcoonline.com
leftnews.napubcoonline.com
pubweekly.napubcoonline.com
pubweekly.napubcoonline.com
mma.napubcoonline.com
pubweekly.napubcoonline.com
mma.napubcoonline.com
pubweekly.napubcoonline.com
mma.napubcoonline.com
leftnews.napubcoonline.com
mma.napubcoonline.com
mma.napubcoonline.com
mma.napubcoonline.com
leftnews.napubcoonline.com
leftnews.napubcoonline.com
mma.napubcoonline.com
leftnews.napubcoonline.com
mma.napubcoonline.com
leftnews.napubcoonline.com
leftnews.napubcoonline.com
mma.napubcoonline.com
pubweekly.napubcoonline.com
mma.napubcoonline.com
pubweekly.napubcoonline.com
leftnews.napubcoonline.com
mma.napubcoonline.com
pubweekly.napubcoonline.com
pubweekly.napubcoonline.com
mma.napubcoonline.com
mma.napubcoonline.com
mma.napubcoonline.com
pubweekly.napubcoonline.com
leftnews.napubcoonline.com
pubweekly.napubcoonline.com
leftnews.napubcoonline.com
pubweekly.napubcoonline.com
pubweekly.napubcoonline.com
pubweekly.napubcoonline.com
mma.napubcoonline.com
mma.napubcoonline.com
pubweekly.napubcoonline.com
pubweekly.napubcoonline.com
leftnews.napubcoonline.com
leftnews.napubcoonline.com
pubweekly.napubcoonline.com
leftnews.napubcoonline.com
pubweekly.napubcoonline.com
pubweekly.napubcoonline.com
leftnews.napubcoonline.com

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6EqEwmxPxwELHIu/4qIH
wDnhiW54PX7YCy4IcyS3MGtxP0GnsBkgQ9mV4Wc0kHBoEk4yeqXfKWtxFL1qny8+
PE1aDeluCzcSyu61bJD5M7gs3144iRDKmV3g3L6mk8B8UtR+oY6gN2Ti04qZ8WLI
ugDHUL+ouuJCAMvJ+8MkowhQ7+DDD9eC03Masmp4tXsfB5/3diOhdwXTALJDnT5U
9GiTeuOGl6kk96NPiQBj8kOOeUmW4Nxv0heScHDbFoFLWuCgVBMPT7SINrDOsrWH
AntSyGqP4TacpSDLlGI/cD6qITfWEdHYRWwbtu6OOzcmIMsvedPkewzcnlCpDOq7
ZQIDAQAB
-----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 347483582423742944954476085169932802925810
 . . . . . . . . [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 2019-03-16 12:05:58 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-06-14 12:05:58 +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 'mma.napubcoonline.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 29324033239233947050969549338756591009231224795952498333844882355274765723958920668770277358145434994778828165507626514513405903787052411135605231682074658020674341340317207206171504971384893041009944345612861913429047969656134329008170572957565984982466103983021820407501277215140459475168645700470093513318178867693640424184794605124588246334723806940412171857656138758435510599820805597564512768208883217035690211106443098910481025002229655448169205590990904619173577031748588881989715703430437819732583800205684092423424449340867178475679851534588836261881399004933129490334437884807291291868873003824629309684581
 . . . . . . . . . . . . . . . . . . . . [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)
							ef5235dcaf4efe390aea3d30461f36a9f636d53d
 . . . . . . . . . . . . . . . . [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 (51 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mma.idc.dlconsulting.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mma.napubcoonline.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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f2007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe00000169869be8050000040300483046022100bf3cfa05167ba0fcde6115fdaff627094f4e41b9ec94bfc7799613346d3fd60b022100c6d662420020dcc36d578ef40ac0ebbbf711c7e4818e9c6751ca87db2c033ecb00770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d00000169869be78b0000040300483046022100b8759c055c73f762f97ca0d8254ad96e92d1eab64b480dc91acfd9e123f95260022100ce1b3d08c6750855c3478c502ab4395f0816012854856ce2f349f2f2b5aad115
 . . . . [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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