www.onceespacios.co

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:82:27:c6:8d:d0:3e:9b:38:bc:6f:fb:3e:1d:f7:81:b9:60 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.onceespacios.co

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:82:27:c6:8d:d0:3e:9b:38:bc:6f:fb:3e:1d:f7:81:b9:60
Serial Number (int): 305626436337934929444916150683167881279840
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: eb:d5:d1:64:40:61:5c:92:3c:f6:2d:ea:57:fd:bb:79:3e:db:e7:19
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): d5:fa:56:62:4a:f2:4d:93:83:1d:1e:16:52:83:c0:01:29:54:bc:35
Fingerprint (sha256): 6b:d0:f5:98:77:e1:c2:b8:f5:25:ef:08:dc:d5:8c:0b:eb:83:72:99:a0:08:46:a2:5b:96:14:ac:34:f8:ad:20

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 www.onceespacios.co

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.onceespacios.co

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

onceespacios.co
www.onceespacios.co

Other certificates including the domain name onceespacios.co

(limited to 100 certificates)
www.onceespacios.co
onceespacios.co
www.onceespacios.co
onceespacios.co
onceespacios.co
onceespacios.co
onceespacios.co
onceespacios.co
www.onceespacios.co
www.onceespacios.co
www.onceespacios.co
www.onceespacios.co
www.onceespacios.co
www.onceespacios.co
onceespacios.co
onceespacios.co
www.onceespacios.co
onceespacios.co
www.onceespacios.co
onceespacios.co
onceespacios.co
onceespacios.co

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyrgr8H2whiKsWyVSJelt
Akq59Va/vJraRBJStCrYW7hojsahMlfSqT3uT8jmrb8vnXhUCjGU7R/aZGYBEUh6
lbKyx5q/3e+HoLbTt7ii0FqrLrLXObOHTvDXOgeqMHwy0lX/ibJprQp4YEHR9XeD
6J+YIeoiA/C4cNaub0NypxSF6q+oG95O593QfJTPe4/+sZYBlGx3PqsOxbCkBQC1
D9WS0cQTNFkRQrwsAWTy3YknjhtsyWPnaG7/hvbgu7HmFZlsWePYxr/cFA+7fNYb
veE8ny9jRhO7f7ZXHOMFTw/ggmuQb5JfDHjEf35If3zuPbIcU8IeOrrs6gZhkqLH
mQIDAQAB
-----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 305626436337934929444916150683167881279840
 . . . . . . . . [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 2018-04-22 06:44:33 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-07-21 06:44:33 +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.onceespacios.co'
 . . . . . . . . [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 25590956022863604347439519209332836193051274728821528727761422820561537894471665393527603028338282957125813029634349937473330669858452928253731803625531815218737522293621093558346115275168421905108032907954976168545800692182375710742028898411583958576039367369695566991658378771732256781262206003948355247303083543857662521443337286262132743801062537392281696985556115376965135121661618466523824530337977714031150353791078639582839820457268936627582670552719682031602120319988603781732102318678367950059765642762577531815179180085570736373477040765862260741052877640232448857057183811640106344670974089004605755279257
 . . . . . . . . . . . . . . . . . . . . [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)
							ebd5d16440615c923cf62dea57fdbb793edbe719
 . . . . . . . . . . . . . . . . [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 (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'onceespacios.co'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.onceespacios.co'
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007700db74afeecb29ecb1feca3e716d2ce5b9aabb36f7847183c75d9d4f37b61fbf6400000162ec4fc6030000040300483046022100b450109228d4f53408423771b9b605c37697dc0c77f694680468f6d47690a2f6022100d9043ec0fce92d60fe54033ed2de6d1d9b9c13f1bc38b152f08d5d054c09db88007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000162ec4fc6130000040300473045022100fb0273a075774a0f8997e480083a2681bb186eafe58e62a3c437698b98573bec0220332b64f972e6ded513755c78d74a21682bc0c90dced3dfc158c0c84e521439c4
 . . . . [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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