alexandercsd.org

Issued by R3

About this certificate

This digital certificate with serial number 04:bd:94:f0:14:55:a2:47:49:1c:78:ab:93:f7:7f:a5:b3:65 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=alexandercsd.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:bd:94:f0:14:55:a2:47:49:1c:78:ab:93:f7:7f:a5:b3:65
Serial Number (int): 412960483382153380726222094582721169175397
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: e0:ce:59:19:b8:38:e8:01:83:50:b9:fd:21:78:4b:32:4b:b5:ad:52
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): d0:29:c6:6b:70:31:9e:81:e9:12:b1:5b:4a:b6:da:b4:74:5a:3e:5c
Fingerprint (sha256): 91:8a:8a:3e:05:94:22:7d:8c:30:bf:4a:e7:df:97:76:dd:f5:e0:55:21:c0:59:2a:4f:ec:a7:40:fd:55:4b:eb

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

Revocation information

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

Check the revocation status for certificate alexandercsd.org

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for alexandercsd.org

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

alexandercsd.org
elementary.alexandercsd.org
middlehigh.alexandercsd.org
www.alexandercsd.org

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admin.jww.jubileeacademies.org
acatitlan.edu.mx
alexandercsd.org
admin.berrienschools.org
aak.potsdam.k12.ny.us
excel.dcs.edu
centerpreschool.centerusd.org
fcctc.franklincountyschoolsms.com
landrum.sbcisd.net
smclassroom.alexandercsd.org
acatitlan.edu.mx
acatitlan.edu.mx
aak.potsdam.k12.ny.us
dudley.centerusd.org
admin.bes.berrienschools.org
alexandercsd.org
admin.middlehigh.alexandercsd.org
aak.potsdam.k12.ny.us
alexandercsd.org
clinksso.alexandercsd.org
admin.centerpreschool.centerusd.org
instructionaltech.sbcisd.net
smclassroom.alexandercsd.org
aak.potsdam.k12.ny.us
alexandercsd.org
ochoaprep.erusd.org
alexandercsd.org
acatitlan.edu.mx
aak.potsdam.k12.ny.us
acatitlan.edu.mx
aak.potsdam.k12.ny.us
mta-sts.alexandercsd.org
aak.potsdam.k12.ny.us
admin.elementary.alexandercsd.org
alexandercsd.org
aak.potsdam.k12.ny.us
admin.erusd.org
alexandercsd.org
acatitlan.edu.mx
aak.potsdam.k12.ny.us
acatitlan.edu.mx
aak.potsdam.k12.ny.us
www.centerusd.org
alexandercsd.org
erhs.erusd.org
aak.potsdam.k12.ny.us
tiegerman.org
aak.potsdam.k12.ny.us
middlehigh.alexandercsd.org
aak.potsdam.k12.ny.us

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEqOGOMfsw7TvMBQRshRMRW/O2Er6N
+55cuerH6X6Le/LMswUQkjWhTtdBjH1KkMvbbYM6pA/rr58sO3cyD2Cr0A==
-----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 412960483382153380726222094582721169175397
 . . . . . . . . [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 2023-12-22 17:50:17 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-21 17:50:16 +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 'alexandercsd.org'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.2.1 (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)
				0004a8e18e31fb30ed3bcc05046c8513115bf3b612be8dfb9e5cb9eac7e97e8b7bf2ccb305109235a14ed7418c7d4a90cbdb6d833aa40febaf9f2c3b77320f60abd0
 . . . . . . . . [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)
							e0ce5919b838e8018350b9fd21784b324bb5ad52
 . . . . . . . . . . . . . . . . [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 (100 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'alexandercsd.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'elementary.alexandercsd.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'middlehigh.alexandercsd.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.alexandercsd.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 (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)
							00f000760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018c92dd2baa0000040300473045022100b59e63d3378ca59e095315ce5effb75eb4c45207db8b4a7a579b1a7d416ab98b02202df13e52910202603ecb1449d099b48f77960ecd4ede33c91cc08e6975e6025600760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018c92dd2bf9000004030047304502205b0031d7dff9204fb275f4ddff7a33f8545a1c3fe89a298c99d0c1723be384e7022100bdc1621686c08ebcf841cedc5d44273bf897204d2a9f715b7ed161a2b857628c
 . . . . [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)
		00948e05624c05f62f519bd6c1fa0897ec01e87dba8f9372dc7e53e3e3cda7da352fb04845e0ad27ec3932dbdba186a86796406964055bb388cb3e79c36a0a56345539dbe672d5c7ed8b3d50b07597afa9edb9da26fcc0b5e929760554c724c9b4d4c3c47803c3ab9867e8d777f65a7ba346db6489be9dd9846a01c1ef2c0d43f0bc0036c994d6c53ac772041c00865807805caf6c68606b9ace536c0daea4bd32dff2067eecf507522bef237b878739087134522259aa8a20731c196fb318a0b038abe31398d2e13288cf318ad5d2620255ec7e6b19673c0557e80fe181b8cd005be47791f03ad30b76c340a24ec43a5636b607e46ab3cdb930ea507bb4c303ad