z-band.com

Issued by R3

About this certificate

This digital certificate with serial number 04:a5:45:38:8a:7f:bc:51:fe:1b:7f:f6:65:4a:70:63:b5:c0 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=z-band.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:a5:45:38:8a:7f:bc:51:fe:1b:7f:f6:65:4a:70:63:b5:c0
Serial Number (int): 404687744578421854451598229075847870133696
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 3d:62:55:16:d8:48:cd:ee:61:1c:d0:ee:48:66:28:bd:d3:3c:b1:d2
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 91:82:72:b1:b4:8c:39:c2:ab:8c:55:64:55:c6:4f:d3:a4:a3:97:39
Fingerprint (sha256): 9a:ef:b2:81:2a:3f:17:a6:48:11:eb:b9:c3:90:8f:33:84:79:c0:f4:41:bb:27:4d:68:27:8e:6d:f1:42:24:ca

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

Revocation information

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

Check the revocation status for certificate z-band.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for z-band.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

z-band.com

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Certificate

The complete raw certificate details for z-band.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtiWIZ4rVrkyte0kJIQ3w
PbXLYpLhM8CE5Bxf6P4u8gMvMuQ2HCJwj9raqaAZ9NE9IZ0QlDMw883/nO6vsEb8
JzxIAcwMLSmkSBqgzIfTW9wGLExJGXgKR7Q4zkjQkpClA2EaEU6v0yx8XRobd62x
LEhE+14OU4SUV1eBAjn9fd7qzuQSWqlEddXzQc3PyoZWpvw3H5CIP2O32s9AKful
OSAh0TQkDh/29gjZ73HVVQjaErMTUu9MpZDEw3CUzoUDXjB8epSskpN5+RrckP9K
LYsFlWsbZ19n165nfxwdp+QMv5buyMN7So6wqE70ueWuz4li47nTbnQaKpUUGgme
BwIDAQAB
-----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 404687744578421854451598229075847870133696
 . . . . . . . . [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 2023-09-28 15:00:30 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-27 15:00:29 +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 'z-band.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 22993879632068768327424418909027558220917455919345856305008534560854376406502498131703486283458153891336829238133000311451312143687800678072432381187263667906173544648599757351627605669130538124221041436989347870441175965803314406938057623344262753976926114010726123560647211543575469670623479831281576904084101404101745196972346791423534388240339552523587921998636770979233364600887017038362235126588570868083218091150412689033278000889188281383939667625498804050988683661502888253792408232112651645537777756619551653011310487252926165941725531760122776496278294835417264412235728949253993627704783440021935320833543
 . . . . . . . . . . . . . . . . . . . . [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)
							3d625516d848cdee611cd0ee486628bdd33cb1d2
 . . . . . . . . . . . . . . . . [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 (14 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'z-band.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018adc852ea10000040300473045022100df9e000d676b49bf2bc8460973f5e8626734795794ec995f1d4979952c1c7f6c022068c9901725ac10d8b9c7af741e1f351fb51975d13867796ff02659189803b577007700adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a0000018adc852ed700000403004830460221008be1168c6cc4ddc40b09eb59a59d86e305fbeb5d56715b94ed769e65603068d2022100a8a1210f8551a39a6bd51da12a468c36ee4b07aeb2f9543f47601f0aef1e500e
 . . . . [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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