m.colfesnet.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:eb:57:8b:0d:28:8a:09:2b:19:d8:42:14:95:59:a6:47:eb 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:eb:57:8b:0d:28:8a:09:2b:19:d8:42:14:95:59:a6:47:eb
Serial Number (int): 341419578853481074239016249779030109603819
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 1f:2d:3a:22:05:db:39:ea:98:fe:ae:63:98:07:6a:eb:5b:b6:87:77
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 34:b6:f3:a8:4e:ee:5f:0b:94:72:c2:6f:3b:fb:39:ea:68:03:51:fb
Fingerprint (sha256): 91:db:52:cf:d6:62:1b:52:86:e7:1f:93:ae:30:a0:2a:62:e7:6f:67:18:88:38:ac:bf:a3:c2:f0:20:69:bd:9f

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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graduway.co.uk
campionalumni.org
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www.vivesconnect9.be
campionalumni.org
campionalumni.org
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challonershighnetwork.com
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graduway.co.uk
m.colfesnet.com
campionalumni.org
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campionalumni.org
colfesnet.com
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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0RZM4nyj6yhqa8MeCm1n
AGRZ9kHfbZxyMJ+Cpc61d0horxRJ2AtOvpZEWKC9IUT43sNohZO489JfexBnLFht
8GLEB4EHhG41w4PpOsqXxiYkFpscPt764bOohvbfW3aw8zbPTB4if5rTBhUAiduT
zpwg7Vsfml3CvzgPeLs0uUKeMonXWucjFkMStOza69wtH2Hd01L5zTcP/XZP4lpq
MowHYxGzS/oJVYh8eLNHJFLPzfSpvQHKKZhIEp/nAt9//FQ0B0bHNxIL5+K/rR8Z
0piRTT78UoOVPdve7sAhId66VNV4n/Z/YlPUuV9+JoUgkqHOloHFnu/RNnkft0pX
LwIDAQAB
-----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 341419578853481074239016249779030109603819
 . . . . . . . . [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 2019-07-01 16:22:09 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-29 16:22:09 +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 26394802440933404572370830386633431524802125622265496474475332036176139650480662014717428395000314434599125613440523079266649430470716368307022895153402650483003074603202042258266332795753728527424482122494536636338848033724033903353939884125579052320044824091067968911542266715048950444831670974072770893367068153108701391696774033918656609064722962084677759363806702264517127427481601032664272480366406735532836862357039497928358558279417725479744464184150134669032958371721232771822331850856572180139181640145160790827896489011583455874778771654232593253732559067665319797031906740871662590689152845874874202871599
 . . . . . . . . . . . . . . . . . . . . [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)
							1f2d3a2205db39ea98feae6398076aeb5bb68777
 . . . . . . . . . . . . . . . . [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)
							00f00076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016bae8ee66b0000040300473045022100af19c7f507efd0447f06ed81330cc9aaed4903116c28fff5f1dc4959719a38c10220384c8d5f9f7b37bf21cc70b969bddb5117e8d4ab02431af9741311288a023c8600760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016bae8ee62a00000403004730450221009f9573c5dec5487cdbf3c7610e03c2423eacea47630a88f6fb9f069fb1c79fb30220271eb59d8f54bf52b491dd5a69d07e89b31a1ed28f50c8c728fc06b6037aa3a9
 . . . . [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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