tg.refer.org

Issued by R3

About this certificate

This digital certificate with serial number 03:7f:8c:7f:38:3d:c3:e0:0f:47:79:48:d5:d9:8c:fe:8c:6f 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): 03:7f:8c:7f:38:3d:c3:e0:0f:47:79:48:d5:d9:8c:fe:8c:6f
Serial Number (int): 304739470876059323111352009854979646852207
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: af:61:6a:ab:33:82:1d:31:e3:9e:57:1a:14:f9:45:33:de:73:42:e7
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): c6:30:57:2b:5e:d9:cc:58:89:84:0e:2f:7b:72:02:e9:74:3f:dd:f5
Fingerprint (sha256): 75:d9:2d:f4:0c:42:15:d2:50:f5:bf:6b:74:ac:77:82:9a:b0:9e:f3:38:7f:2a:ed:d3:31:5b:d9:0c:37:63:90

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
adip.eg.refer.org
foad.refer.org
fad-damanhour.eg.refer.org
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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsQ83nitzEXjfNNVLxbLo
jGPH3aq11vKMCLBv0RnQxht7uF/bxN8VnSP5PvcPeM8tswtMnSy2mlk2hTYbigkp
+mkhrtOIOiVKT5m+D2Ssfnsysat78TqzHd7/iKNSFb4YqtcZMmcK8FHdjXVLnRfw
uC7ImyyXhmuormyrDGKUjZiAAqrirsdJ1NawJKFDx0eDL1yVmmHfUQnxRpiJRUBB
3Pi/gRZox7GPtys9Rc68WLVgpbRjqwBfrRoBX40E2jaPTYe5H512zE1srM6Iu3r0
LYCPpWe/tyg0li8q7ptK3mvORVgbtsGRN9oFTXRpI7kDtl3L8sVUEtZQCumSwGat
MwIDAQAB
-----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 304739470876059323111352009854979646852207
 . . . . . . . . [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 2023-10-20 22:05:05 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-18 22:05:04 +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 22351683888206257681032544133013900979174554902009806266626529737874320407890617103516224684527878960404834090166042681387430317501985029832484623989248180045362263621374212015581070064427279402664696159445808558697468590664159801613780141826196924984758933868629101286787490429138300074375327933780914667772016807161604630232458714001469205302798942011383871126025703268831087531698344075641842201343570545845451176642000034367733341597870950675999490974500927702447886466683060364768476075909546265412234495986643396045254371442093575394862365621724344613110684681604416498340369400771068430477215812600118192287027
 . . . . . . . . . . . . . . . . . . . . [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)
							af616aab33821d31e39e571a14f94533de7342e7
 . . . . . . . . . . . . . . . . [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)
							00ef0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b4f55cfc4000004030046304402202de43655f7f060a4d591b9736123765de4fead191e27bc7fbe4b8f6a55d28921022005c849c2071275706d352b9595265a830889710991242d0132e3e9ae49b2e015007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018b4f55cfc80000040300473045022100d9eac65d66514ff3252059683c2e1ea968c954f83f6cd977b4e1685c7575621802207b5f807973660753228bc9a9dcfbd656cd12e4bb3a3efea28feb14677a091696
 . . . . [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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