www.dtuco.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:52:0b:1c:ac:08:4e:fe:9d:40:3c:ae:ca:df:87:ac:4f:5f 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=www.dtuco.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:52:0b:1c:ac:08:4e:fe:9d:40:3c:ae:ca:df:87:ac:4f:5f
Serial Number (int): 376367068196056338408990033288543760830303
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 5d:d5:f5:7b:6e:3f:33:ff:e8:d9:96:d3:23:67:ab:13:b3:5b:a7:8b
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): d5:d1:d2:c5:51:b5:10:1b:0e:3e:2a:27:48:a3:37:a1:d5:dc:a6:3f
Fingerprint (sha256): 5e:de:41:72:e2:4e:6c:34:3b:33:9f:b5:df:56:9a:4d:77:2b:28:d8:6b:e1:3b:1f:aa:07:94:c2:01:3f:37:44

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 www.dtuco.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.dtuco.com

Public Key Algorithm

RSA

Key Size

4096

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

www.dtuco.com

Other certificates including the domain name dtuco.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.dtuco.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 376367068196056338408990033288543760830303
 . . . . . . . . [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 2019-12-31 14:02:04 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-30 14:02:04 +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 'www.dtuco.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 840617453548582321057594133999796023228854151412556527960127220242989838288124067942924926286118437636502694362857918655331929699322258120458627531998647560586634670013221993338129669320405069253948774997881973087455244405164041110096618149662985125387306637273383194956383991924183228205091058563070498725410714746624110102782217172998441026675307752799553338573679061747115308778779441638648349887683774347303612960414810206132642236566833651778240546264493645764563924315752239811450714977763019049944777262480303551978719279159399735604085254856144102252482372281206539391803948726878787302460001491639443800044689661999726473006870099359407693786488866342093985782320382050704285688475171613007008682904197574106319380245912230794652964827335914671684961966434292005966968119977377419098515391573757100721017007902689923038656288835224659003298471731188252134740429142987316621807137813358793520168036032529103314769523680543564175591976898972158805889092131580248578483634733180263201809162215242737459743442341293248183237999684980316814900671880821177059005986902121780922826984089206534455381209156123469269616508560547809504530291098905480468799962852084809534310953626365961479337516345912537557831598930044480307869653933
 . . . . . . . . . . . . . . . . . . . . [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)
							5dd5f57b6e3f33ffe8d996d32367ab13b35ba78b
 . . . . . . . . . . . . . . . . [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 (17 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.dtuco.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016f5c7a6b310000040300473045022100d6ca800963b022a0b9b7493c5c40c783a7be497bb9d8642d7bd3fcd0421727b502203211561ccdb482c307d2d58ad1238ed2bf128e4b8e27ac6b6fa75d1330c93d5d00750007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016f5c7a6b3500000403004630440220017c99955eb1e63157ebea9e7cf3a46ac7482c6f90043ce5452d526352bc167802203c80b55e10d21ea174afc60df1358fab1054ea736f3189698198c34490815256
 . . . . [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)
		006ca8b4181fbd3699bf33c2e5e5b03b4c63ca14ca789571317130bb2e3e544fc5968d5eb09e4b3699168abcab1f259523b5a6428c84192b197a0fce066f166b450da968bb6e3e2f65611aaa954594c21e08cf3c1f6a3fed45def4c3b7c6bbb00e88f17060647f3af8647d9cc1623f4a1d434f8b1af14522b4ae326bd70cee0a243577f2b67e676ba6d918fa9a35100599c6ef2714da1623ac8bde01670a3bd6914a76022d2f3e5aec83328907bb2cf93949f1ea0038b03250b7a39221c47cfaeebf4d85b1f48fd01d6fac238de5553512e48b64e568c3b9f866e41bea4fb4fd727e56a4a3ff69d210b39f4e80796d3cbe38832eb34288a82bb9bba87398311eb7