tcsk12.com

Issued by E1

About this certificate

This digital certificate with serial number 03:7b:52:73:bb:02:27:aa:d0:0f:57:62:a2:3d:7d:a9:a7:7c 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:
  • 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=tcsk12.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:7b:52:73:bb:02:27:aa:d0:0f:57:62:a2:3d:7d:a9:a7:7c
Serial Number (int): 303301186529330594175820659677295219943292
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: aa:c6:b2:92:58:cc:d1:c1:de:ec:f6:f5:91:4f:8d:62:31:ed:07:f1
AuthorityKeyId: 5a:f3:ed:2b:fc:36:c2:37:79:b9:52:30:ea:54:6f:cf:55:cb:2e:ac

Fingerprint (sha1): 9d:fa:50:6f:11:02:c5:44:d8:bb:a0:20:9e:4d:14:b7:23:e3:71:d2
Fingerprint (sha256): a3:33:e7:ec:39:ee:fb:85:20:f3:f4:1a:38:21:4d:d4:89:5f:54:65:3b:64:e4:d0:27:5d:19:4c:98:4f:f1:92

Issuing Certificate URL: http://e1.i.lencr.org/

Revocation information

OCSP Server: http://e1.o.lencr.org

Check the revocation status for certificate tcsk12.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for tcsk12.com

Public Key Algorithm

ECDSA

Key Size

256

Signature Algorithm

ECDSA with SHA384

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

tcsk12.com

Other certificates including the domain name tcsk12.com

(limited to 100 certificates)
admin.almaacademy.org
admin.almaacademy.org
oce.lifeschools.net
tchs.tcsk12.com
acc.ausdk12.org
admin.tcsk12.com
admin.ace.pusd.org
acc.ausdk12.org
spanish.pusd.org
es.moodyisd.org
admin.morelandpreschool.moreland.org
admin.his.huntingtonisd.com
admin.almaacademy.org
hsd153.org
admin.cvhs.cvsd.org
admin.almaacademy.org
admin.belmont.tcsk12.com
riverview.durangoschools.org
www.tcsk12.com
res.rlisd.org
admin.almaacademy.org
tcsk12.com
admin.anderson.moreland.org
eceap.gsd.wednet.edu
admin.rowlandschools.org
admin.ges.cvsd.org
admin.almaacademy.org
admin.elc.cvsd.org
tcsk12.com
nbfacademy.org
burnsville.tcsk12.com
tcsk12.com
mcems.cherokee.k12.nc.us
ordterrace.mpusd.net
admin.cvsd.org
www.tcsk12.com
admin.ace.pusd.org
acc.ausdk12.org
res.rlisd.org
admin.ace.pusd.org
admin.almaacademy.org
admin.rowlandschools.org
admin.almaacademy.org
admin.floridamesa.durangoschools.org

Certificate

The complete raw certificate details for tcsk12.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEONoDSe8Kzy1ajQ0yyV9XkrcOOPnn
Ck/QbkMr+42RjGSNRDG+rRH8lM4ZuukQQlK/SqAdstUYLwFv7ckAb1WfqA==
-----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 303301186529330594175820659677295219943292
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.4.3.3 (ecdsaWithSHA384)
 . . . . . . . . [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 'E1'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-08 13:25:29 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-06 13:25:28 +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 'tcsk12.com'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.2.1 (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)
				000438da0349ef0acf2d5a8d0d32c95f5792b70e38f9e70a4fd06e432bfb8d918c648d4431bead11fc94ce19bae9104252bf4aa01db2d5182f016fedc9006f559fa8
 . . . . . . . . [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)
							aac6b29258ccd1c1deecf6f5914f8d6231ed07f1
 . . . . . . . . . . . . . . . . [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 5af3ed2bfc36c23779b95230ea546fcf55cb2eac
 . . . . . . . . . . . . . . . . [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://e1.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://e1.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 (14 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'tcsk12.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 (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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018e1e746ab7000004030046304402202cead80b71aa99b86ed0366478ef50dcfe77a021fa5d36918ac63a1cbedfc25d02202fe8f1eba940d05c801634b40a8eb03d035c305fe211d0d6e6a0dda311721fc400770076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018e1e746b0b0000040300483046022100b9b2c86421cf28a4c195a71d5575e1b7fcfe00e05c513962231a299b90b85999022100be9eff401e22924f154513f5fee799571dccedb7b9014a2b84ded6d88739c398
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.4.3.3 (ecdsaWithSHA384)
 . . . . [c:0|t:3|false] BIT STRING (832 bits)
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 22307975205540331880776644010378513773465228079875498858576012421736725053749730897602503635202225514322447198016125
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 34495575927521360308740315869536763581058767732336708470154106104224528268806785044632493695375442848778387125064080