a2ztopic.com

Issued by R3

About this certificate

This digital certificate with serial number 04:e4:11:eb:15:30:b1:bb:ea:a8:b2:fb:e5:27:ad:d9:47:36 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=a2ztopic.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:e4:11:eb:15:30:b1:bb:ea:a8:b2:fb:e5:27:ad:d9:47:36
Serial Number (int): 426057340880493615011859198161234949654326
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 1c:eb:bc:9c:dc:38:25:38:04:61:e9:46:9f:27:64:9b:a7:5d:b4:91
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): c5:6a:f9:e2:e5:57:f8:b9:a1:1a:a1:1c:6b:9c:b8:25:cf:be:0a:34
Fingerprint (sha256): a0:92:20:05:fc:22:13:96:ea:2b:30:95:90:f9:6c:a1:c5:33:fe:e8:77:a7:2d:3a:b2:27:46:52:d8:94:c9:69

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

Revocation information

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

Check the revocation status for certificate a2ztopic.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for a2ztopic.com

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

a2ztopic.com
www.a2ztopic.com

Other certificates including the domain name a2ztopic.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for a2ztopic.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 426057340880493615011859198161234949654326
 . . . . . . . . [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 2023-01-27 13:25:12 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-04-27 13:25:11 +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 'a2ztopic.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 651157342725181260063127228631149148304122319412374749231498760159179674817953444256430541628981019531167764482086422260194986368616536861023511222502543516850568970085091662311026539044794221278055570532950368361991981571340739021385181596693609930672011228309024766788977192039598117841948387117802511183790995254157748616373242285570798796419721977148546217972162926553470602164595646375464086017869446254695680435250201387568959213780949911520197870477593434886156812882361630195359102123936761097753664191978137605639168214710660945687361761802040454166709100393801548230313540417472726553734934127369384828464584189888203822369852655827123071098837065662883851884664677802654449911243773123763368833030675392738390634452147594341416825939504969014740263455544238787147711238426322426380412241255577677698584687310178257034828638289216555626710627701940494560108384892341639409849476885365464645371536642885487167886101172700971207382400900978135082481743041796463005188602714923370928797730565126297212534720251561187696607581294505169964879220196626689415600667298160319508411757748270751860524299505223766759902866115268469816644174905256245715554636165346223165922654855783830195715553769379183485869363678351340723457863837
 . . . . . . . . . . . . . . . . . . . . [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)
							1cebbc9cdc3825380461e9469f27649ba75db491
 . . . . . . . . . . . . . . . . [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 (34 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'a2ztopic.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.a2ztopic.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 (69 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 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [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)
							00ef0076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000185f39e42120000040300473045022062f3ad8e5797ff7670d9d7e4dbe92818810bb417670ddbda6a1bd1443be7c87302210081f919599cec60092f0d7a0010a0a715f3e90c5cb119806dd946f66326b9c6de007500adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a00000185f39e422900000403004630440220221ba00f7454651d7275a8526ba39470c06a5680c5105eaf428ee9f8156efbc002204b3141fd3db39c12b329c3866f5037316f46972d8053d4a0ed00a1fcc009d6aa
 . . . . [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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