tcc.twai.it

Issued by R3

About this certificate

This digital certificate with serial number 03:aa:27:d9:f7:1e:ff:7f:08:7b:d0:b0:a3:a8:51:de:99:b0 was issued on by Let's Encrypt.

With 5 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=tcc.twai.it

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:aa:27:d9:f7:1e:ff:7f:08:7b:d0:b0:a3:a8:51:de:99:b0
Serial Number (int): 319237831804305281733820999340382899575216
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: d3:c6:28:43:b8:fe:95:d5:0a:f4:2a:8f:06:e5:1f:57:8f:f4:07:87
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 6e:92:8d:d8:ef:b9:f4:2d:06:d7:26:c8:b1:7f:b4:0f:4d:ba:45:2a
Fingerprint (sha256): a7:87:4c:60:ee:d4:ab:62:26:b5:dd:2d:67:c6:b9:c2:f8:a0:c2:87:9e:28:01:35:21:3d:b0:04:76:80:08:4f

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

Revocation information

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

Check the revocation status for certificate tcc.twai.it

5

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for tcc.twai.it

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

tcc.twai.it
thechinacompanion.eu
thechinacompanion.it
www.thechinacompanion.eu
www.thechinacompanion.it

Other certificates including the domain name twai.it

(limited to 100 certificates)

Certificate

The complete raw certificate details for tcc.twai.it 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 319237831804305281733820999340382899575216
 . . . . . . . . [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 2023-10-07 00:08:53 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-05 00:08:52 +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 'tcc.twai.it'
 . . . . . . . . [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 733660954058617765124270104113067447153749400390116121625446872578502076628666835242254933297562888853789877039323675649676776756132137550185411036879629245803813856265182016294865225205460644816764556852266878178135516129008079276781023912518579288983463396460197658055847237305369617560584488330095747993164698513930038960140955556076945531137785216566123322583028984463811251606432405390105169578954408878245776143872200793750979734671325011442545483917773024190341057040247945429492899725338062253835911124082083873819908832635205086318846016216556769739260400362475737595263358650568972312209166897437424585254884866426900049617728223224102748320322083069392845336903584177745260217787910170248245921730581160079693663740407287626710422733471626305652497544612271587544214989912234195050361167605493482538747833174132184397732810926543256530154481469927310433882486420465384095620550429711023895662212092992719496791928886044673729246396898245590070587576847345195589803957267907719630897885471990412303166440871472698085336386894462536076297344867740470939218598054230007627940398321021349677028361791694755250093938500055777458789841097533576783725214264930572475156566681121764720406627236431686561353669672365349032778821751
 . . . . . . . . . . . . . . . . . . . . [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)
							d3c62843b8fe95d50af42a8f06e51f578ff40787
 . . . . . . . . . . . . . . . . [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 (111 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'tcc.twai.it'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'thechinacompanion.eu'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'thechinacompanion.it'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.thechinacompanion.eu'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.thechinacompanion.it'
 . . . . . . . . . . . . . . . . [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)
							00ef0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b07ae1d6b00000403004630440220447dcb2381c541d4b5587e14245047ce32521be0785d0cfd79e5154124cff846022004370d00e4a187d6d87906bacc395e97257bb68f9f02b7b2d33de7e52f9248e9007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018b07ae1d5e00000403004730450220282dd46b0da31aece19c66cc7fe4ef1b5d0430ece881e4edf6c74197c284d27d022100c37ed8a02c370e3f0a77df5ae220ea12f5b568beee97daccb0a4a64ff3b28115
 . . . . [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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