juanmanuelostoja.pe

Issued by Amazon RSA 2048 M03

About this certificate

This digital certificate with serial number 0f:66:a1:f8:0e:25:68:58:b3:88:0a:13:09:af:99:6d was issued on by Amazon.

With 3 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=juanmanuelostoja.pe

Amazon

Organization: Amazon
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 0f:66:a1:f8:0e:25:68:58:b3:88:0a:13:09:af:99:6d
Serial Number (int): 20471319337252795123350065413801089389
Serial Number lenght: 124 bits, 16 octets

SubjectKeyId: b4:72:e2:01:0e:2b:ec:f5:b4:82:2d:19:5b:71:2c:03:7b:2c:68:06
AuthorityKeyId: 55:d9:18:5f:d2:1c:cc:01:e1:58:b4:be:ab:d9:55:42:01:d7:2e:02

Fingerprint (sha1): 46:33:7a:cf:94:1c:b3:cc:c5:29:3c:87:31:e7:65:7a:21:52:82:d2
Fingerprint (sha256): ea:ce:7b:6f:22:75:f8:f6:79:71:a1:30:b6:1f:6f:4d:d2:40:a9:7b:68:f9:66:57:1f:d0:c9:d9:ce:3a:cd:d5

Issuing Certificate URL: http://crt.r2m03.amazontrust.com/r2m03.cer

Revocation information

OCSP Server: http://ocsp.r2m03.amazontrust.com
CRL Distribution Point: http://crl.r2m03.amazontrust.com/r2m03.crl

Check the revocation status for certificate juanmanuelostoja.pe

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for juanmanuelostoja.pe

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

10 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

juanmanuelostoja.pe
*.juanmanuelostoja.pe
www.juanmanuelostoja.pe

Other certificates including the domain name juanmanuelostoja.pe

(limited to 100 certificates)
juanmanuelostoja.pe
todoesposible.pe
juanmanuelostoja.pe
juanmanuelostoja.pe
todoesposible.pe
juanmanuelostoja.pe
juanmanuelostoja.pe
todoesposible.pe
marketingdigitalusil.com
todoesposible.pe
todoesposible.pe
juanmanuelostoja.pe
juanmanuelostoja.pe
marketingdigitalusil.com

Certificate

The complete raw certificate details for juanmanuelostoja.pe in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvTSiRKe2jByR2GRf9Wuu
kyTRNCE47AOitl0PLwbDUFYqE8MyiVCS1h4br6N/8jCHWIG/ioCf1kD+M8R+TnYi
Nrkje1ktTrJFiXAN79GYey+EKw5q07PNHR33DEHtcfGPp667mZodosnjnyFUEgmG
MwRUc5vrsrFvUrErGE0vR9ymKYjp8L++DcacCvp40pp4hWGlv6jtKbSTGMtQviB+
ErmGoCJgavc3ZY3f9nm1kOaJO89M6/Bk9GtzUci9OAV7X1n4nkDJBvXu8EN8ulUa
eyoZ+VSdXxLnzEHc806yU1bE+DbBBwCV65zi6hwRrHv8oXor/BLZ63MPDyp2ey6Q
JwIDAQAB
-----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 20471319337252795123350065413801089389
 . . . . . . . . [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 'Amazon'
 . . . . . . . . . . . . [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 'Amazon RSA 2048 M03'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-06 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-03-06 23:59:59 +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 'juanmanuelostoja.pe'
 . . . . . . . . [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 23884994362343299212102424986412673182096891824028569181339970166509067256046229398051532035224955168931065710862363620899446895970507244118132741968774377840766554375010100076516753317248257376170528038884660250101366740280825527584861964840445646790325649542461681976925693977546411355374895256755685301865542163201299731768831828065448039171095607709898095434691651305826711299032313063526421760605012233800123675119739597199994044833765302571351859555268551361719021653616124585356490621248520593728392807172306673397921733865188054257495344797614377235114313058792694698760897967683737601785007412036242785603623
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 55d9185fd21ccc01e158b4beabd9554201d72e02
 . . . . . . . . . . . . . . . . [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)
							b472e2010e2becf5b4822d195b712c037b2c6806
 . . . . . . . . . . . . . . . . [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 (71 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'juanmanuelostoja.pe'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.juanmanuelostoja.pe'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.juanmanuelostoja.pe'
 . . . . . . . . . . . . . . . . [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 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 2.5.29.31 (cRLDistributionPoints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (52 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crl.r2m03.amazontrust.com/r2m03.crl'
 . . . . . . . . . . . . . . . . [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 (105 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.r2m03.amazontrust.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://crt.r2m03.amazontrust.com/r2m03.cer'
 . . . . . . . . . . . . . . . . [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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (366 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (362 bytes)
							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
 . . . . [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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