www.mastas.in

Issued by R3

About this certificate

This digital certificate with serial number 04:5b:06:36:2c:50:9e:93:72:7b:c6:42:f9:82:9f:22:3b:00 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=www.mastas.in

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:5b:06:36:2c:50:9e:93:72:7b:c6:42:f9:82:9f:22:3b:00
Serial Number (int): 379423095767664809583686967131607998282496
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 54:2f:79:ba:e6:ad:f0:5c:bf:d9:f1:73:bf:ac:c7:f9:8b:02:77:5c
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 39:1c:8e:47:54:ef:31:2b:12:f2:e2:e4:7b:ec:9c:90:79:26:c2:67
Fingerprint (sha256): 5a:47:4a:e1:36:62:84:74:96:ef:d0:33:2e:64:12:39:55:8c:27:9d:fe:6b:e7:6c:9a:67:38:61:6d:b1:31:91

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate www.mastas.in

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.mastas.in

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

mastas.in
www.mastas.in

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mastas.in

Certificate

The complete raw certificate details for www.mastas.in in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA50sG3da1FdvodPT6/D/v
nBwuZAz33+dMd0WMtPRTdcJs4/Ny1P4/sn0jNpERV8G6ZOJGVzw3aM1sYYRVYAAj
EOC8RRRroDRCuUUpx3Y07ptdRiVhB6T3kIo1sjhj6gkQeQx8OSo6JpMLcPsaqA6n
4VbFnN7yVPPBVSH9d4xcC1m7k1Oy7EX896Z6NZ6dnjKxZCgXPQl1i8zMIPd+yZSQ
hbZenumiZw9kMMNQPDHZkSVQkfsSTZ+El7++4T5A95K/tXF38dkmuBOe0LQL+S83
LcBnW5EPjdObUvNwt/Vefv4QmuVKbLrtyFGVREhmmWKUYFBAMIlidNNuWToHcWXW
3wIDAQAB
-----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 379423095767664809583686967131607998282496
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-09-09 22:09:17 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-08 22:09:16 +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 'www.mastas.in'
 . . . . . . . . [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 29198045552230320134306193461565458482138893900054350478874165509816594313233138723238711728645573550172044322076546733395158007715342479047608797435841928521891933549628418910101695965787747119059672202374191983512261685356236287760719212021307275360474127209047284930501697820435523709619137496988431725484079807893394059767910457141113629133158319424292737586310574774089764118843840833810800963629023416153872158530064914183122181498772697733477028814800209207431113635241751768301305843031068658321954644869355265646587068146371085438371226618192930000976820192242896306734526401411950465937533528257591136081631
 . . . . . . . . . . . . . . . . . . . . [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)
							542f79bae6adf05cbfd9f173bfacc7f98b02775c
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mastas.in'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.mastas.in'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018a7c34ec78000004030046304402200bb8a00d05924829ccc439bdf9dc2a235e6132e42503716e3ec42864ca2fba65022011b88dc5ad30f0376f8916a207edd73a373afee57e5afef592da108516ee7f98007600adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a0000018a7c34eca0000004030047304502210080f9777c0b311de709dcc1038fe82b48dbd3168c2ec2f8c7f2cfdcb2338bfb8e02205c0b78062e32f3ad16efb65ce9edbab47172e77f264da87b93177f30d69355d3
 . . . . [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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