m.colfesnet.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:d8:21:b9:ca:16:2e:18:1a:99:ab:5c:4d:52:a1:f7:0e:4a 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:d8:21:b9:ca:16:2e:18:1a:99:ab:5c:4d:52:a1:f7:0e:4a
Serial Number (int): 334882678247787204178116639403518316711498
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f6:62:20:a5:90:64:24:07:63:39:47:32:92:c4:c4:49:7c:22:57:54
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 81:a8:d6:2d:32:b4:99:82:2c:f6:b3:70:48:cc:db:f2:56:0b:15:77
Fingerprint (sha256): c5:31:44:72:ea:33:4e:e3:5c:a2:7d:a7:02:e8:03:62:f7:0e:42:d1:29:6a:e1:ea:7e:a7:23:f0:a5:ef:c6:e5

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
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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAjv5zL68COU2ew55gpFOF
dYV/NEAqcPJ92Rk87eqtJ0bzXrYVRcRbaR0HdrXqY0bi1QPumK/QBCNeN3ExT3em
nd4gDshh/TySzWeptlPJ/ZXEMPWlPsjpgQPDx7SkSgqHfL3yFE98yfxDE560MFWN
1lXzJmDzbjNa5SfgdFAbNUEEI/ajOCYA18e45kTta8/8BOf9fHXMgvyerNzhoP2j
g+je4WHbrMmB0vbqJA2PlKVMwtLyhPu6WLr28x+JLf5aPx14i37oZEZa+xox0/tb
SvdIY1fxAWHDo3c0UKia9EaF8hBjbn2DuQG7cDfRgVeptuuIRLmOW1oNMoBWJWEI
uQIDAQAB
-----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 334882678247787204178116639403518316711498
 . . . . . . . . [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 2019-07-29 19:03:08 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-27 19:03:08 +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 18051313250200729479010556020666057162414612653948030507961239129211437872444301061495220342892476368894933251669862157780682750252354791209278240665935789323578720273129551063994659839437794043598192035950546537488362475899771251300747983501595587281087413787633970808775681807488743361590967450704833402484228270339444890461189819162447045038883689545978166258135246130514987022103058913631026247943373818371367086102078890635611090264508843257737170102803825378416905299186025253401075304661714028664941254525821036479620650366554867085743701803627224391680580535359781513232604203093071817521895432124027434502329
 . . . . . . . . . . . . . . . . . . . . [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)
							f66220a5906424076339473292c4c4497c225754
 . . . . . . . . . . . . . . . . [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)
							00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016c3f545b870000040300473045022100c0bcbb8b53019dfc91aaae870c682d4e6b35d0d63f3fb74f6c814adf0cf4c81502203f0f77f21ba5c2435f07d8e116f6769e4e67af261183d1c4417af0fbf64f5a35007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016c3f545b780000040300473045022100893a2b29c2f2155c8232081d9e1c86713b159ef45990e378a26218c008e84fb7022059824ace8625dd7dc49bb1a978c96c6cf79c112cfae356bd349d38042e4a77ba
 . . . . [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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