sem.leapscholar.com

Issued by R3

About this certificate

This digital certificate with serial number 04:a5:23:4d:30:2a:2f:d4:bb:63:0d:3d:cb:77:d9:e9:77:c5 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=sem.leapscholar.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:a5:23:4d:30:2a:2f:d4:bb:63:0d:3d:cb:77:d9:e9:77:c5
Serial Number (int): 404642658032604459068755796482044165978053
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 20:d5:fa:9f:f5:73:5d:e7:88:b5:14:fb:08:90:f2:03:4c:54:4c:8c
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): d1:08:08:93:66:3e:fb:ff:1b:c4:b8:57:90:21:a0:f7:1c:d4:bf:c6
Fingerprint (sha256): a9:20:c2:bb:2d:bc:d8:42:fa:24:2f:de:f8:bf:ee:d2:5a:9b:5a:89:0d:5d:bb:53:2c:10:32:82:62:1f:f7:30

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

Revocation information

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

Check the revocation status for certificate sem.leapscholar.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for sem.leapscholar.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

sem.leapscholar.com

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Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu+Yul+ilkU0EOvBwbIq5
tfZQzlJYmBkdQLbVQZIzbF10lJjXO1o//5f3adEUagNN8X1eqOq80cQ6OP3bAojh
ZpqwFav7MpmFojvcfKqFQA86PU8N4iVkWAJ2ArNnfrMbA/DgWdz8+zS255qOz9Xh
+igl+mtcszO4BCQ4xJfXY7XNgNxWZpRvsIJsXTKuls+aZ414fk7ALLx+akKHBc77
H/CvhIlw+YxURJ3Z1trRoDRiVaw31DZ/W7IGzIX+sMbDZPkWGp4/7iHyn/ocS4HL
fLRCPZLW3xHWhbbLA5hHciKTNWQz1miG5son2KHI/cf2lAU95ozSpk/m/1cObmQU
BQIDAQAB
-----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 404642658032604459068755796482044165978053
 . . . . . . . . [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 2023-08-03 07:14:07 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-11-01 07:14:06 +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 'sem.leapscholar.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 23720070006000366705399813068575921737329986598374794612901164157144541806976693032231659580494271802540692754636144284879171388563951131789557858058313718711561801562575190494749477197562907709855539583369492724656755326243412846245752309982378277392496522376117769916707322543296991407248376752202665401992429321724039261435000303827861475817930666765129049887845764032670834012922298295127823141626322400893955102513260200761052784940093874717090688046085524938932668350438624218815497338154719729565004858900778207627182320783573013411257311246059880670319371647284179627143613216453516448856597981449470987211781
 . . . . . . . . . . . . . . . . . . . . [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)
							20d5fa9ff5735de788b514fb0890f2034c544c8c
 . . . . . . . . . . . . . . . . [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 (23 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'sem.leapscholar.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000189ba7612b5000004030046304402206971cfa44e0e98d1d3051253ed2d559b378af967aba8776bcbe4dd3a84f179a602206bda8ab1a50c5430f0e7967547d6fee54e8fc1072e26af8701b5d7ec02b37236007600adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a00000189ba7613790000040300473045022100faab961ec314fc937be09dcd0b5d836825598aadae4cba318be1ee261299a0f80220540c0c6111a23bec59eece9c30aeaa87d0f5c42ef6031da11fa2853df4169bd1
 . . . . [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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