atu.ie

Issued by R3

About this certificate

This digital certificate with serial number 04:54:84:0e:1b:55:9b:2c:58:06:68:ec:de:97:4b:ec:8c:7a was issued on by Let's Encrypt.

With 2 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=atu.ie

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:54:84:0e:1b:55:9b:2c:58:06:68:ec:de:97:4b:ec:8c:7a
Serial Number (int): 377208393890406922797481600284254721051770
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 46:3b:78:c6:9b:fc:41:ab:3f:99:79:fc:25:7d:b6:9e:64:13:12:40
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 71:3e:24:56:e6:93:8c:36:66:34:3b:ea:13:8e:72:f7:21:15:f0:43
Fingerprint (sha256): 5d:87:ea:56:21:92:29:78:df:ba:45:5c:95:08:49:3e:09:9e:82:b8:79:79:fb:f6:7b:9b:e6:72:90:7e:98:3c

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

Revocation information

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

Check the revocation status for certificate atu.ie

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for atu.ie

Public Key Algorithm

ECDSA

Key Size

256

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature

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

atu.ie
www.atu.ie

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soporte.martinezabolafio.com
servicedesk.coram.eu
support.brill.com
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customerportal.uk.rlb.com
customerportal.uk.rlb.com
vlesligo.atu.ie
servicedesk.am-labor.de
support.homeinstead.ie
servicedesk.relyonnutec.com
it.rmk.ee
it.rmk.ee
itsupport.gnt-group.com
systems.squaredup.com
customerportal.uk.rlb.com
studenthub.atu.ie
support.homeinstead.ie
servicedesk.christs.cam.ac.uk
helpdesk.atu.ie
customerportal.uk.rlb.com
support.brill.com
customerportal.uk.rlb.com
soporte.martinezabolafio.com
servicedesk.christs.cam.ac.uk
atu.ie
helpdesk.atu.ie
customerportal.uk.rlb.com
support.homeinstead.ie
servicedesk.christs.cam.ac.uk
service.littlegarth.org
support.homeinstead.ie
customerportal.uk.rlb.com
customerportal.uk.rlb.com
support.brill.com
customerportal.uk.rlb.com
servicedesk.synergyretailsupport.co.uk
atu.ie
itdesk.ininingroup.com
servicedesk.christs.cam.ac.uk
customerportal.uk.rlb.com
helpdesk.atu.ie
hub.theriderfirm.cc
studenthub.atu.ie
studenthub.atu.ie
customerportal.uk.rlb.com
servicedesk.am-labor.de
servicedesk.synergyretailsupport.co.uk
servicedesk.esmsglobal.com
soporte.martinezabolafio.com
itsupport.hvdgroup.com
systems.squaredup.com
hub.theriderfirm.cc
helpdesk.sales-i.com
itsupport.hvdgroup.com
support.homeinstead.ie
systems.squaredup.com
customerportal.uk.rlb.com
itdesk.ininingroup.com
servicedesk.coram.eu
it.rmk.ee
servicedesk.tpos.co.uk
itsupport.hvdgroup.com
customerportal.uk.rlb.com
customerportal.uk.rlb.com
servicedesk.coram.eu
support.homeinstead.ie
customerportal.uk.rlb.com
support.homeinstead.ie
customerportal.uk.rlb.com
support.homeinstead.ie
itdesk.ininingroup.com
servicedesk.coram.eu
soporte.martinezabolafio.com
servicedesk.synergyretailsupport.co.uk
customerportal.uk.rlb.com
servicedesk.esmsglobal.com
atu.ie
helpdesk.atu.ie
helpdesk.sales-i.com
customerportal.uk.rlb.com
support.homeinstead.ie
vlegalwaymayo.atu.ie
itsupport.hvdgroup.com
atu.ie
soporte.klz.rf.gd
customerportal.uk.rlb.com
servicedesk.relyonnutec.com
support.homeinstead.ie
atu.ie
servicedesk.relyonnutec.com
itsupport.gnt-group.com

Certificate

The complete raw certificate details for atu.ie in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE9JtyP8fm7PTEQGsBIfwvtaFSbFW3
PKjwqj7cvo/V2S6tt11KFdg4S5tjYxFiMAkSMmPL8oSAtV0Af4fDcs5xdg==
-----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 377208393890406922797481600284254721051770
 . . . . . . . . [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 2023-10-10 01:39:49 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-08 01:39:48 +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 'atu.ie'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.2.1 (ecPublicKey)
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.3.1.7 (prime256v1)
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (520 bits)
				0004f49b723fc7e6ecf4c4406b0121fc2fb5a1526c55b73ca8f0aa3edcbe8fd5d92eadb75d4a15d8384b9b636311623009123263cbf28480b55d007f87c372ce7176
 . . . . . . . . [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 (1 bits)
							0780
 . . . . . . . . . . . . . . . . [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)
							463b78c69bfc41ab3f9979fc257db69e64131240
 . . . . . . . . . . . . . . . . [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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'atu.ie'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.atu.ie'
 . . . . . . . . . . . . . . . . [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)
							00ef0076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b177474bc0000040300473045022100dc6660cea3d19ac49eb5d6748f4aa614ff33d488872812c87a9ce7bf71dd324c02203477f1ad6e969e252fbb6dd784c1905086f0b8a132e28df48eb56fe90f493b63007500dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b177474ca000004030046304402202b109ce61921e88906e5bb3fafb0ce8b0ef421773cb242f8e0c813b52986f94102207342df09419f48e8ff7b1d6ceb7020b2a1ca6dca44d411fe98fccf0076c31f42
 . . . . [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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