isegypt.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:16:62:ac:f3:d5:5e:43:b4:ed:a4:91:e7:20:73:0e:2b:71 was issued on by Let's Encrypt.

With 9 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=isegypt.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:16:62:ac:f3:d5:5e:43:b4:ed:a4:91:e7:20:73:0e:2b:71
Serial Number (int): 268954232231718281628219661527020446034801
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: ae:51:c3:ec:2c:66:97:29:8f:85:43:80:68:7c:77:04:a1:b6:5c:6b
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 18:aa:f8:57:64:ab:49:bf:b6:25:28:7e:5f:10:bd:bb:66:68:69:97
Fingerprint (sha256): c7:6d:e4:e1:79:87:2b:d8:3a:35:34:e3:cf:21:87:a4:68:b0:dc:59:d7:c7:36:de:a3:0e:6d:cc:2e:1f:fe:f7

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 isegypt.org

9

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for isegypt.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

cpanel.isegypt.org
isegypt.org
isegypt.org.cp-42.webhostbox.net
mail.isegypt.org.cp-42.webhostbox.net
webdisk.isegypt.org
webmail.isegypt.org
www.isegypt.org
www.isegypt.org.cp-42.webhostbox.net
www.login.isegypt.org

Other certificates including the domain name isegypt.org

(limited to 100 certificates)

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1SdT+HVUOUHbtOSI6Ia1
xGJyiFzPklt5eSgXj/MESIqYTxRmrB09FecAHXbkOa0E2dUw3HIWgyKpuMC+dCJr
hFDX4N8JEhp4PjC944n8EZ6siaw7HIpPNmOXyRufQDpvZ95xqKmULTWatCXCPl2K
e/GfaHQNz7IQtHev173mcxbchHT5qKKnuHPxG20LtEbxkiDcoEY4YexvwEJ/oyvy
QHlR1QyUzBK9HNbZR0rNw9Kgt+jlC3rLwYEFiO9Gg+wqSPW6gQa0HzlqdI7Mr+9n
UU+APx12CZGeoXVXmS5A7cPd3uax1+5rGkws/OTumukQcX/KVZ63YbVIwSN2X0X8
TQIDAQAB
-----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 268954232231718281628219661527020446034801
 . . . . . . . . [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 2019-01-21 02:31:38 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-04-21 02:31:38 +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 'isegypt.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 26908152322264131084883234431857488429610445149528951337298393450518219026790823741012082311920544580122563942326832579313316146450222238862622294464737418235798931373605297854551351330897825110847106447120935180224357248393144146131115178255552665023293916106770164469781226926708902764409684300288691992071288523885908116674573836527631540986430259542642923454066638449664928869819101162037437913621991189008292316277544508238134454647002981786147026055862118385209486904982722492335825871507692272990627555965576565761947846209030257201938242870251335883359786236693076173552479946768372648422765950476990697307213
 . . . . . . . . . . . . . . . . . . . . [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)
							ae51c3ec2c6697298f854380687c7704a1b65c6b
 . . . . . . . . . . . . . . . . [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 (229 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cpanel.isegypt.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'isegypt.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'isegypt.org.cp-42.webhostbox.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.isegypt.org.cp-42.webhostbox.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webdisk.isegypt.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webmail.isegypt.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.isegypt.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.isegypt.org.cp-42.webhostbox.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.login.isegypt.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 (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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f100770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d000001686e76b05c00000403004830460221009605bd6e10ead4db66b755946e93701cef5ad823eebe563a0a921d97e51c07fa022100e269720f40a1ed6775be2e3c5bdffd9d571296c0eafb588fc127b3de15ae31ca0076005581d4c2169036014aea0b9b573c53f0c0e43878702508172fa3aa1d0713d30c000001686e76b2f800000403004730450221008cdebaba9368cd371688f14a33017c7d52eb111a8cf2b755235f4f6e6fb6ed7a02202f83cb174ba0abbfa02fb8fa2a12cc6e09487e513bcef995c5124b2bba631210
 . . . . [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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