m.colfesnet.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:a5:4a:95:64:b1:ce:75:d8:b2:a4:57:e1:ee:cd:80:c7:5c was issued on by Let's Encrypt.

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=m.colfesnet.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:a5:4a:95:64:b1:ce:75:d8:b2:a4:57:e1:ee:cd:80:c7:5c
Serial Number (int): 317582586903483833385102486571931320502108
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: b9:f3:ee:9e:aa:c3:99:7d:12:1c:91:8e:13:f6:1c:6e:22:34:b2:aa
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): fb:d9:1b:0a:1d:3a:d8:6a:d4:e8:c6:68:a5:fc:24:81:6c:6a:38:f9
Fingerprint (sha256): 2f:c8:20:14:fa:84:d0:c5:d3:bb:58:4e:e1:61:8a:a9:b0:87:f3:70:59:bd:30:b3:b2:7c:2e:91:73:4f:03:83

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 m.colfesnet.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for m.colfesnet.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

m.colfesnet.com

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colfesnet.com
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campionalumni.org
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campionalumni.org
campionalumni.org
campionalumni.org
campionalumni.org
charterhouseconnect.org.uk
graduway.co.uk
m.colfesnet.com
m.colfesnet.com
campionalumni.org
campionalumni.org
community.mancosa.co.za
campionalumni.org
campionalumni.org
campionalumni.org
campionalumni.org
connected.cardiff.ac.uk
m.colfesnet.com
colfesnet.com
challonershighnetwork.com
cettalumni.com
challonershighnetwork.com
www.vivesconnect9.be
campionalumni.org
graduway.co.uk
m.colfesnet.com
graduway.co.uk
colfesnet.com
campionalumni.org
graduway.co.uk
m.colfesnet.com
m.colfesnet.com
campionalumni.org
graduway.co.uk
graduway.co.uk
campionalumni.org
colfesnet.com
graduway.co.uk
campionalumni.org
campionalumni.org
campionalumni.org
www.vivesconnect9.be
campionalumni.org
campionalumni.org
colfesnet.com
community.mancosa.co.za
community.mancosa.co.za
campionalumni.org
community.mancosa.co.za
campionalumni.org
campionalumni.org
campionalumni.org
community.mancosa.co.za
campionalumni.org
campionalumni.org
m.colfesnet.com

Certificate

The complete raw certificate details for m.colfesnet.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAkjmWPtpnY6fhOG0sj+VC
Gm2mITqCy7QWRgK5kcQEBvaTNEdlO9wIJ57Vednl/QM+yY/7pfChJzW6xEuV3hRn
cTF1pCxqejsxTtxQBSQU6kC8LThhn31lpxMkG59/0yAzIDc4y6HuNcNHuQYZJqNp
gah9BVT9HLSw9LfOgYHEcRFbgLmNHfvYvyjT5c5/jAkmZCvwPcgQ5a9F2izS1HEy
vWP28x50lbMgX9APwQbSVqqx/YBANqAU3+iLmnoN+DSMJEbS5Mn1dv8cP+6fTbqY
9hgZ9e3f/kH/fW2dGiyGV/faNKZiOfy8ZLB2ERqJ8+Lui6lVTyywP6K5LMd2yTOM
gwIDAQAB
-----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 317582586903483833385102486571931320502108
 . . . . . . . . [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 2019-06-03 15:08:58 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-01 15:08:58 +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 'm.colfesnet.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 18459189682116216883398853630508662363372931785635200182713479317387323068818569150064937203627496245523496515463877915002889450381346253534774724065837698295472096340937298385953768405070258699545001242116570969243840984339211814020156028104831029233688512606528602099922128980633795843468527980733400210475201041688215761887436569034747511991844145613514826676850014664135309886749027671828343005552708595117755201378910182845068290596568271756215801307424015129696599393642867495600036007693898053102322278008215141393573013610542791700185934004272818755268923209098988390437265804403926977882875333843904902696067
 . . . . . . . . . . . . . . . . . . . . [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)
							b9f3ee9eaac3997d121c918e13f61c6e2234b2aa
 . . . . . . . . . . . . . . . . [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 (19 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'm.colfesnet.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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016b1e19d6c40000040300483046022100c83a2080680027212f53d4d24ae22e2df9265e61721b42336e0dc42813dac7f7022100d3e37e46cb502d41082c993402d1bd365c829e5c589f9f590cab898b3472edfe007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016b1e19d6a20000040300463044022005f71b1f6f5d8fc3db6a2e1b02bb4623a68210d1117d45e98dc0f30f2f1e3f5e022004732416d10d7f50851281bd53be742c9f05a9bcad1f51cb853e65388b5a32fd
 . . . . [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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