tg.refer.org

Issued by R3

About this certificate

This digital certificate with serial number 04:22:29:0f:91:f8:c3:90:6f:fa:1c:82:9a:9b:ec:a3:08:88 was issued on by Let's Encrypt.

With 3 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=tg.refer.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:22:29:0f:91:f8:c3:90:6f:fa:1c:82:9a:9b:ec:a3:08:88
Serial Number (int): 360073323395291454941513192691612548008072
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 3f:cb:49:c6:fc:1a:e2:5e:5e:fc:b8:25:c2:d0:56:9f:f8:2e:bd:f4
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 9a:f8:7f:6f:9b:3a:96:35:51:33:cb:6c:6a:5f:87:7e:bc:50:3f:e0
Fingerprint (sha256): 3c:9a:9c:7b:62:09:3f:c3:ea:da:42:af:ba:a6:85:40:cf:0a:45:41:21:0a:71:72:64:f9:61:8b:d9:e8:b7:4b

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate tg.refer.org

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for tg.refer.org

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

courrier.tg.refer.org
tg.refer.org
webmail.tg.refer.org

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senghor.refer.org
listes.cm.refer.org
examens.refer.org
listes.cm.refer.org
listes.cm.refer.org
listes.cm.refer.org
basarpcsi.eg.refer.org
www.eg.auf.org
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foad.refer.org
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examens.refer.org
examens.refer.org
foad.refer.org
foad.refer.org
cnf-tripoli.eg.refer.org
senghor.refer.org
*.refer.org
www.eg.auf.org
mooc.refer.org
www.eg.auf.org
tg.refer.org
adip.eg.refer.org
foad.refer.org
examens.refer.org
listes.cm.refer.org
mooc.refer.org
foad.refer.org
senghor.refer.org
adip.eg.refer.org
mooc.refer.org
cnf-tripoli.eg.refer.org
www.eg.auf.org
mooc.refer.org
senghor.refer.org
www.eg.auf.org
fad-damanhour.eg.refer.org
listes.cm.refer.org
www.eg.auf.org
www.eg.auf.org
foad.refer.org
mooc.refer.org
examens.refer.org
basarpcsi.eg.refer.org
tg.refer.org
critique-mediatique.eg.refer.org
*.refer.org
basarpcsi.eg.refer.org
certificationtice102.refer.org
mooc.refer.org
basarpcsi.eg.refer.org
adip.eg.refer.org
examens.refer.org
foad.refer.org
listes.cm.refer.org
senghor.refer.org
examens.refer.org
critique-mediatique.eg.refer.org
mooc.refer.org
critique-mediatique.eg.refer.org
mooc.refer.org
tg.refer.org
examens.refer.org
*.refer.org
listes.cm.refer.org
listes.cm.refer.org
listes.cm.refer.org
adip.eg.refer.org
critique-mediatique.eg.refer.org
adip.eg.refer.org
foad.refer.org
critique-mediatique.eg.refer.org
fad-damanhour.eg.refer.org
fad-damanhour.eg.refer.org
foad.refer.org
senghor.refer.org
listes.cm.refer.org
refer.org
fad-damanhour.eg.refer.org
adip.eg.refer.org
senghor.refer.org
basarpcsi.eg.refer.org
fad-damanhour.eg.refer.org
veilleauf.refer.org
senghor.refer.org
listes.cm.refer.org
mooc.refer.org
*.refer.org
*.refer.org
basarpcsi.eg.refer.org
cnf-tripoli.eg.refer.org
critique-mediatique.eg.refer.org
www.eg.auf.org

Certificate

The complete raw certificate details for tg.refer.org in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA8vp9ORzxWBLBFzkbAHa+
znprUiM1WdCbxNXs177pXo9WsnDdQGAkXMQJ0Vm9whRSl5UWorK+OMBpUvUz6F0b
DiCXwp/oDm2jk53RCCWfzrWitHaxycwk1GYzYXoVJngCbqdDo4Gozj9G3z+9lz31
JC+HGHwhM1YKavigKxIdecWNnWuIyrxvQwrIkQLAXvincYqMhh/57AtoS9ObJax+
sDuesGVqnmL9XrBqOuSxYPTP4jb3ESjpUgplc9R+J7c6yPCDLHBScmicR20JCh10
IPoOczpUp/wzdSnMHOl2fz+CdpNOp+DwcXgsArStOmsoCMe/El/gV/L84Vr2OT19
jwIDAQAB
-----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 360073323395291454941513192691612548008072
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-20 06:45:53 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-19 06:45:52 +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 'tg.refer.org'
 . . . . . . . . [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 30673190606678869822898729465763141623834632839467408626998364023171477734269926557573230050522103593605687057360521545258259595412310579492579268925652562678949661017765099608979635507063256607620667687334144662478110322041601097303362022594024781512629970120177781783545761618079883900706878371865741368994029581055738502268023804757753830043299401563096711375190024131896828782244877247814295966432915323459586494739812764247936475993404899567747704871429172288505448767459222187551358675619636828504382844155261822018846836409579514279467692293846922041558183006397983604422703179062833465457193079634125765049743
 . . . . . . . . . . . . . . . . . . . . [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)
							3fcb49c6fc1ae25e5efcb825c2d0569ff82ebdf4
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (61 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'courrier.tg.refer.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'tg.refer.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webmail.tg.refer.org'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef00760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018c86302d59000004030047304502203e785354ff226d79db2d55e4e803fa023e1be82bfc124471e3e645f0f55ce559022100e1ac77b1e3adb426cdd3674aa2f3759cf2b1f4257d4a34c07b88b8157ed07cd700750029d03a1bb674aa711cd3035b6557c14f8aa78b4fe8389449eca453f944bd24680000018c86302db3000004030046304402202abb0a572fa3eb6b81f050ecb507d6ce6db3a8b0dddc045418226e89925bd2fd02207e80e348e8a65727d5abd9521359855f90a6ba6093e8bde7b32366c55a98ac56
 . . . . [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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