DV SSL/TLS Certificate for *.coworking.buzz

Certificate is witin its validity period

Issued by Let's Encrypt (R10)

About the *.coworking.buzz DV SSL/TLS Certificate

This certificate with serial number 06:a7:83:36:4a:a6:e4:18:3f:2e:e6:e2:3d:68:ea:0e:0f:a3 for *.coworking.buzz was issued on by Let's Encrypt.

With 2 subject alternative names, this certificate can be used to secure multiple FQDNs. This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for *.coworking.buzz provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • 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)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 06:a7:83:36:4a:a6:e4:18:3f:2e:e6:e2:3d:68:ea:0e:0f:a3
Serial Number (int): 579675281631957165680594000243066661638051
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 37:f2:de:a9:43:0c:88:c4:22:ab:c7:e4:60:63:44:31:44:f6:47:7b
Authority Key Identifier: bb:bc:c3:47:a5:e4:bc:a9:c6:c3:a4:72:0c:10:8d:a2:35:e1:c8:e8

Fingerprint (SHA-1): 4c:f1:7c:11:66:d1:4c:83:7f:b9:4c:48:eb:2f:08:aa:8d:25:53:4d
Fingerprint (SHA-256): ab:ec:91:6f:f6:72:c6:d7:33:b5:f2:fe:84:25:6d:0e:04:d3:83:25:64:7d:09:14:3e:45:61:12:b1:56:10:bf

Issuing Certificate URL: http://r10.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r10.c.lencr.org/36.crl

Check the revocation status for certificate *.coworking.buzz
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for *.coworking.buzz

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
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

X.509 Certificate

The complete raw X.509 certificate details for *.coworking.buzz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvyzeb7tNWSeK+cGhfT/M
e8xfhZ1kT3hQv4LMyKalMucmlW68bvIwgpoS7k2xm5XWK1Z2eSiZU+aNql9MX0/x
qLM9S3iRZWgfMAha6yxbVZ1DinTurE6NOB5YXPgej2pHk1xpcXSoIgQEqi/JHO3b
U0T3Hpu252ixQLS6mabeuOYCjMLnImZQXdHgwqJLDHwitAeLdTSK6xr3/cnTDfS8
EcHefpHjty/ovxJNjTIeGA1gcfNPkLs+RprP6X1EZW6tjTpiinzxvXCqegYxVAzw
DSA8NjDpGzyOV+672hH5ckzvDIxsQuWU7ZwnhY6ZF4uurVp/6F9NXA8cNYRMUGSB
AQIDAQAB
-----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 579675281631957165680594000243066661638051
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R10'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-07-01 00:21:18 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-29 00:21:17 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String '*.coworking.buzz'
 . . . . . . . . [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
 . . . . . . . . . . . . . . . . [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 24133641923989757848387789833904323035340218626626701797546398428931704995591901674733718499103520758240183773363350309485952691176799262327556736881876006476108899286361437543752017187963071064463706007279635352420764404760282336782484247340864765996486253468207441720267248927584485616796904373660259017507550685728789846561619550394235461922647077076424697482854365972416444088402128704401563847237940306012851373993388357532314648437657835360715154128149450262605171143463541172816697089636343354073797349783766956038876156998998784102372907506497357242936654108085518543773173263595802579826116939920991576162561
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							37f2dea9430c88c422abc7e46063443144f6477b
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName bbbcc347a5e4bca9c6c3a4720c108da235e1c8e8
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r10.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (36 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.coworking.buzz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'coworking.buzz'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r10.c.lencr.org/36.crl'
 . . . . . . . . . . . . . . . . [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)
							00ef007500a442c506496061548f0fd4ea9cfb7a2d26454d87a97f2fdf4559f6274f3a845400000197c391983600000403004630440220763b127d0a2fab8cce1e97ec03a7e724b484e615d0154288f7b04fb5ee14a460022060f97acb30d6de95c291f4f3c71c920ad229a5ad46d1b152c148e00c84cb41af007600ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db000000197c391984800000403004730450220294780807b55758130864a16a09b1d56dce7a99e9dffb7b1ee796087ba5dbc8702210098c175a2a80d0678f7dc8137edd0de029bd5703b711a6e8b850c2af856efb046
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		00143a0ac6cc3e2c5029737e0c4322ac60025dfd5333e5a49e9e7c6fc747cc421279899fc3aaed5b8687b25137ef7e87cbf922450b7deb64f3f46749864345b8f1eebae81ab8eceee06fb96d66654c364cf45240ae464e9191e87e43028bbcb0913a991177a6bc0c22037fb62e7c13042c5ff1f49f4319880f84f89883b0b93a78cce717fb57933503df80af8c10f60185dca75f1245522f207bb69d90fd938892894a43474ee0143f0216cc19251ef7e0d21391f80c90e95f5dbb337c8f658096825dd41240c42bc5b51f23b1ce485429e512c422f3778392aecb04207f9f78c1bd225c28e5831813eea23f2b7aff4e2cbdae2559cb2ef9e1233797c1f9aaddf6