m.colfesnet.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:4c:76:0c:60:b3:e5:2c:46:58:0f:d4:2a:c6:dd:a1:46:94 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): 03:4c:76:0c:60:b3:e5:2c:46:58:0f:d4:2a:c6:dd:a1:46:94
Serial Number (int): 287355230853701074286811296327084401575572
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 01:9f:4b:cf:a8:88:53:b4:1b:70:8b:ba:98:ba:5e:e8:94:39:e2:40
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 21:6a:83:74:e5:da:50:5c:10:af:4d:58:b7:95:31:37:8f:a5:f4:6e
Fingerprint (sha256): 94:16:9f:67:9a:30:c3:40:96:66:e4:22:0e:36:38:dd:4f:8e:6d:04:7d:52:90:d6:ab:9d:d6:01:b5:67:f5:2e

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
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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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsI51E5m2Ltos8nUIz3KD
508MoXclRUmczDQ4I+AxLt8SrA+TCD35fiSLjx6Ru9L02hSAtbqTXu9Ej9g1tYrX
/sRmpRlxUvIWZEYeyZ7+J7fhR1Am17jXMALN+BgHyeNehizjT/3h1BNhO0zrHy5I
i0e6luumC9xrPUTg9yPmm0a2PUmip4j2W/n73UOlGhTNwkghR1UnmazeDdUYNCLv
jFzlwkSYPSMrE9NiXFdLvnmTYSOEnp4rgxirWv9lLpSfyvnGka6TOLIB/esSJ3mN
5naq0BOfC957UGtmtOcc3p3Hx7E378WsEJt/Bv65gfPHKZ1JnimEAi6ZKdMQYnXN
XQIDAQAB
-----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 287355230853701074286811296327084401575572
 . . . . . . . . [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 2019-08-12 19:38:55 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-10 19:38:55 +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 22288190001802539528584458031097477005105242950738443179824767466772382456644280485376497651990330624270025249240945850477199251600132356979280466508344495679346559449895959905003015060355300642612404260910794611003469597761243120857747502114797062021529353915219031367066021784613693009939947894315371230921171238650830349179543839554222052519656894281620195918003309316536793071625545458922777671467627468538064749398705561190425080944680086907546999776804371250490800331757159762828336295881977436818167755111260504585156655179444045833748087050168702138745733170737630610597238966092943613547521906053647439351133
 . . . . . . . . . . . . . . . . . . . . [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)
							019f4bcfa88853b41b708bba98ba5ee89439e240
 . . . . . . . . . . . . . . . . [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)
							00f00076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016c878e25890000040300473045022100d5fc784ed186864d4f598732b7decdd7a16f51893d3cd77ea783bf79cdc08ee802204e308f71d390a47f216816dd5160d7e37525467f23f2928f80331814818d906e00760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016c878e2562000004030047304502202618082770ae4a399f664ee7ac815324c8102006739d84f43c5d0fc71333a708022100bbfbfcf246716b44ea0b863e659c9e5b403c3dd7843754aff1bc1bbd3d5ac771
 . . . . [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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