xn--crrot-3qa.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:3e:47:ac:53:13:a0:47:ce:2b:98:0f:69:c8:38:3c:64:6e was issued on by Let's Encrypt.

With 9 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=xn--crrot-3qa.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:3e:47:ac:53:13:a0:47:ce:2b:98:0f:69:c8:38:3c:64:6e
Serial Number (int): 282529634492134258291705139725626205037678
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 2a:44:aa:2c:de:4d:3b:81:7d:9f:f1:ae:de:4d:97:7e:ed:41:3a:de
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 5f:03:79:59:c2:c2:cf:42:7c:5f:9c:de:bd:bc:55:16:6b:d0:4b:43
Fingerprint (sha256): 49:ac:14:95:e0:cc:c8:24:87:c7:d5:54:54:ad:fb:88:d6:e0:88:6a:87:da:5e:a6:19:19:78:bf:52:96:db:3b

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 xn--crrot-3qa.com

9

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for xn--crrot-3qa.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

fisioterapias.info
jobleap.com
jobleap.com.fisioterapias.info
jobleap.com.jobleap.com
salembusiness.com
salembusiness.com.salembusiness.com
truckprotection.com
www.xn--crrot-3qa.com
xn--crrot-3qa.com

Other certificates including the domain name xn--crrot-3qa.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for xn--crrot-3qa.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnBf+tWrmVfAaDDOIwbhy
fsbEC9pGMdIDODSDH4Nh9Y+UuWVCzPkarb/Vupv2/47bqKIrAsL9enNzFRejjmnJ
Gx1qvdEA4WPjiX/zZY8kEDu2qmpGT2DJZJuMAp1vitXQU92dUOwhfOnE5/uSMTKG
zxBDLlmpefmUaUphHlzgyFi9VEBvCDXCuyXz9kTrs3RrjfZMqja0+9yWBlOgGPm6
c38nofxfNy2BuTrJuU4lq8LVVH5RF3AqmkJivcwrIOERVO16jR/vfYTLIpcYvWzI
UyMcB/97rkivz8v1hH8Mmhv0F0TXEQ1x6+frGmSsUMLZAjwnLCYpVZGvAPxFPb3k
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 282529634492134258291705139725626205037678
 . . . . . . . . [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 2020-03-21 04:11:52 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-06-19 04:11:52 +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 'xn--crrot-3qa.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 19705007928364859646725258278562868961121485525485772038824294433607690679375733997410389602760692458975496906466719785651546189055391732172933580179508992907393299959443257292689263430972773069608507312211736823834735236842698453748296177252573586531388563198330913422483659663534733974292692213556231127936811945504008883063013914325123920955512668169467839906340524581724499799117687469733222931495154756980377543417902077919863767275620664294590530396408918919477001132143627167755134843727585677344061902814511204591170846851989231914259816997152249953269798439950948092962805181313726593881991747432503958168799
 . . . . . . . . . . . . . . . . . . . . [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)
							2a44aa2cde4d3b817d9ff1aede4d977eed413ade
 . . . . . . . . . . . . . . . . [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 (212 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'fisioterapias.info'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'jobleap.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'jobleap.com.fisioterapias.info'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'jobleap.com.jobleap.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'salembusiness.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'salembusiness.com.salembusiness.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'truckprotection.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.xn--crrot-3qa.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'xn--crrot-3qa.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)
							00f2007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb27300000170fb812fb70000040300483046022100efec9e21f41fe08a86d9fd086764fb5da22066ae09cc9e2940c1ecc4ba5dbbdb022100daf55bccdb56e5cbfa9ba22a1a1d16a0a8d19344df5008b921c00c43422fbf44007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e00000170fb812fa90000040300483046022100e73cb90dd6d6ffbd645e6af71ea5b32ed9eab7c015fbc4acaf7d960e0cd84451022100d64c12e113015b9ff8685ccd19b9ba81353ed91b0a8a6f2086f92f11104d8216
 . . . . [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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