blackfriars.net

Issued by R3

About this certificate

This digital certificate with serial number 04:df:85:18:37:bf:28:d2:29:56:62:1c:d0:a0:94:83:b1:22 was issued on by Let's Encrypt.

With 2 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=blackfriars.net

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:df:85:18:37:bf:28:d2:29:56:62:1c:d0:a0:94:83:b1:22
Serial Number (int): 424509024619652003296879276753583186620706
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: c4:99:d4:32:63:06:15:0b:58:5b:d5:4d:d6:c1:37:15:e7:e5:8e:49
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 22:b2:28:74:8a:e6:dc:33:57:12:6c:98:fa:bd:92:cf:25:81:55:16
Fingerprint (sha256): be:48:25:09:c2:96:71:f5:6f:09:e1:d0:1a:25:cd:e2:ef:0b:ab:f3:7e:90:9a:63:94:76:2b:4f:7e:ce:84:4e

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

Revocation information

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

Check the revocation status for certificate blackfriars.net

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for blackfriars.net

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

blackfriars.net
www.blackfriars.net

Other certificates including the domain name blackfriars.net

(limited to 100 certificates)
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amymccarthy.com
www.corticosteroids.net
blackfriars.net
woodlawn.city
blackfriars.net
limi-t21.net
blackfriars.net

Certificate

The complete raw certificate details for blackfriars.net in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA00wXbPLec292+NiUg3YC
YfqP4iiYNlSVorSeVLVz4q+v51a/DgmgebNh7GxblPTU2Qmp2L3m6RcboDWyemMl
HL6VSVfYRdN2Hj+ebbx7jRqCaiuIW6OF4W8wAB9740F09d9ZH/EvZPcwSLUTTicu
zr8YGwwYJllDrkjlWdQnzaRH45NhuH14w9j85QUnX/PI7sAa0YwHW9BluAPRh5/4
itstJH9qxd8Zx+nZhBhEA7/uw4m6S9JNi68Wmp6UAgWOWuZ1VBzktNFWhmP9bXYU
yZaOfFf2iwdYTf4D4COZiYIgti7h2kkkQi87NMPAgsWNcLPh9FvDvbiHDw7yEEdg
ZWMpEyDMZOIqgQounM9Xq8FO4dSnGOyEPjCx+mNQKKwqqAvnnQT6TGEMjel+cy6x
3uHD4zuP6lY1YYvxUyXXLKpeAuOGPSDospn2ewejThiBJHCFJOAXN28gjt0e3q/J
VaP24+iTWw/rEidBAYqDHfXZQLuDtB3VISgyJ93rcGXC321CvirP1GVwmmhGHs1q
/ElBiNXBk6Ym/HxdBUkH7kCHNOXLzrVHSWP0OQCDQbt36t/M/IUkRQybLTd9FOWm
isUWaF4/S/4pYTlqvdvlWw0qz/GmC0dPaz8/LYILBxoyVbwhiSc67np/8Gmz0OjP
Bn99vRtVzgbYSU23+M9hE4UCAwEAAQ==
-----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 424509024619652003296879276753583186620706
 . . . . . . . . [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 2023-11-20 23:02:27 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-18 23:02:26 +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 'blackfriars.net'
 . . . . . . . . [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 862017500937383226578905864919623989988494253921135810435802737627648318874387875417931960898904923931634067305714061427545051044094622447864780094686114904669031674114542652143854035416053310433855641364710150003639761291159533790887161278527142067412698511469435270684443173897433355487227079023527381683762175088511786395069644197399603612715562662683179877761427640507035043803104371689121503832166334637718388931933934332699410282946088097599935006389920295734250447832481230342043532787351233439036114304986667093438126179793573380072034020104624650778150319161328066069575090711779150552886183958382161897581436376995001045426039900575362307546381060643584902012144309022438024275532239921856862597091625674413615376664030961540201035321412482065719874390406569598280524274094983005239659493394354122669425882134829697475555719206215100669116991729541454526568321150746076551337484895576633158026832191963456069016589430863353273139122519019091114791601444266387982008969548437652615452921932132499951496933041042853679384658031051973368375088607199301990434817247434340357685644623754017949998801847152754537973809076986869131801917771939545712522800287682134703277034042736506177459410465206797879397092682482332903363646341
 . . . . . . . . . . . . . . . . . . . . [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)
							c499d4326306150b585bd54dd6c13715e7e58e49
 . . . . . . . . . . . . . . . . [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 (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'blackfriars.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.blackfriars.net'
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f100770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018bef2f7b760000040300483046022100ab5b7eb7c1b043cb3e225018c6e88ddab3bb61d81c6c84763accd154554c0f4d022100849782100367b7ac9d297edb75964c65fd4bf862fc7405254e3fb519fac4df0d0076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018bef2f7b80000004030047304502203475c3827f40141c59a617277f0fddfddf0f2cbd45dcf316f58aa12b94d4688f022100b6645cbecb3de4dcdd9ed87380766ba2527c81881eed7c812342c1299d1fb42b
 . . . . [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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