www.xec-t.com

Issued by R3

About this certificate

This digital certificate with serial number 03:ab:ef:80:07:e2:75:10:a5:46:f4:bf:5c:09:ae:11:ac:e9 was issued on by Let's Encrypt.

With 4 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=www.xec-t.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:ab:ef:80:07:e2:75:10:a5:46:f4:bf:5c:09:ae:11:ac:e9
Serial Number (int): 319843492803670366366916240314760359423209
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: a8:55:e6:dd:90:07:f4:40:74:cb:ed:97:60:f2:0c:e5:91:7a:5a:30
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 0c:4c:af:ca:e2:1f:e4:3c:c6:f0:d4:75:84:7d:53:92:93:8e:2d:f5
Fingerprint (sha256): 94:70:12:b9:1c:5e:97:a0:c0:74:01:d9:1c:41:82:d1:45:1a:9e:09:a0:de:4b:37:6b:1b:c6:ec:ce:71:e8:36

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

Revocation information

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

Check the revocation status for certificate www.xec-t.com

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.xec-t.com

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

www.xec-t.com
www.xec-tt.ltinstitute.co.uk
xec-t.com
xec-tt.ltinstitute.co.uk

Other certificates including the domain name xec-t.com

(limited to 100 certificates)
xec-t.com
xec-t.com
www.xec-t.com
www.iangclark.net
xec-t.com

Certificate

The complete raw certificate details for www.xec-t.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA8EeKnrklg8lRYqJhWPYa
QrRmE2dk/w+t0Use35qyYDnTS2dtcaJ3DtNX/eJyNzRTzlLLMyN/D4t7qavIWrhV
+l6eyJSP6P7BgExkmXBGjGK/C7cAJBMwLwAKqWvTTxXq4A5n8y7DfMImBrmXbyyn
kQwwHm/w9xOMsFMscthpNolBC5oFKYkzNx902BAS3B9pkFQ8tBpnpMvg6qgQ/HOm
anBMIGv3EISvUHhgGmYTQYxrrudzg+5DQNGriQ8kbhYiJvxtb97/DN9eT03lHLd2
iJpWPSpPIe5UJijd8uOUMZGSk6JmdeC5eRoNIdKK8CSQo5e211HbnM6fBLcrYgcg
ZQIDAQAB
-----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 319843492803670366366916240314760359423209
 . . . . . . . . [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 2024-03-01 02:42:32 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-30 02:42:31 +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.xec-t.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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 30332471612668424784914314629436675798072372058148316295076594657840732591418369594146922547640281771294055844995292170116879778297599158903297131270308052913787813041680135832735106817456990906618208320892250835354086936722149427312444732957046963506720648583851722964200332689592395421383180164179209153573666324932205831593686873225765108660015431021981648600539448560768220138307538648236155303159522337727505558339686833938963427061509893197612689398203224246921067334386813047529950829457865635252399731185500332356696193183567909441875288701265276345599016097656680839503682785244084287025676231261380204240997
 . . . . . . . . . . . . . . . . . . . . [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)
							a855e6dd9007f44074cbed9760f20ce5917a5a30
 . . . . . . . . . . . . . . . . [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 (84 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.xec-t.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.xec-tt.ltinstitute.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'xec-t.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'xec-tt.ltinstitute.co.uk'
 . . . . . . . . . . . . . . . . [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)
							00ef00750076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018df81b439900000403004630440220379b476fd1fa062598f9d353ec46e3e28b55c79be06c58063834958c62a3074f02203f5eb18d8ea9bbcdef449802ee97019b5a51fcc95319409cd23915143a7a3bdc007600a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018df81b43320000040300473045022100c33420060dda863d055c8e73cc8700ad04d55d3c381e0cc8b150f13bbc38ce63022018cd27c0c34cd96d9fcadebb55ac47b7d8773fababae3a9e836b3cfc77b18175
 . . . . [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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