calendar.ai

Issued by R3

About this certificate

This digital certificate with serial number 03:1a:b4:7c:55:1b:30:1e:78:44:dc:71:15:f9:e9:00:94:35 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=calendar.ai

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:1a:b4:7c:55:1b:30:1e:78:44:dc:71:15:f9:e9:00:94:35
Serial Number (int): 270424105945435751980145438548828809630773
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 53:df:bb:27:b1:8e:a5:5c:23:a0:0b:1a:de:16:29:7a:f9:47:4c:95
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 37:e4:5c:f1:cc:19:10:57:ac:5f:14:15:75:6e:c9:0d:0b:15:cf:97
Fingerprint (sha256): 44:ee:9d:81:4c:71:10:b7:c1:a9:46:f0:d7:5a:af:d9:73:9b:74:e3:64:9a:11:53:d0:46:34:a3:3d:6c:30:37

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

Revocation information

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

Check the revocation status for certificate calendar.ai

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for calendar.ai

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

calendar.ai
www.calendar.ai

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(limited to 100 certificates)
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support-ios.calendar.ai
fairy.mahoumorning.com
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sqkii.land
calendar.ai
sixsens.holywood5000.shop
www.quicklyupdate.com
tuckeryazdani.com
calendar.ai
assets.jenosize.io
pro.calendar.ai
www.customfit.dev
www.quicklyupdate.com
www.calendar.ai
ricshowdepremios.com.br
www.ricobeti.ch
lascandelassf.com
support-android.calendar.ai
calendar.ai
www.bestotaxi.com
calendar.ai
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bydlic.cz

Certificate

The complete raw certificate details for calendar.ai in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA55uXypXjiJD68d3LBbNk
haFLWfpHuHCFjs4o6aFoYRSEZIVqo9MmcD8PVcuje1mzzoQEaCysn4+ceLssWv1+
Sl2jKr2h48QqyieX99hfb15+Y3YGW62d/t+vJcbZMBnr2jDhzksBj4j7SN9sm46k
3yeJpn/Hq9tM+QATdUn13IAaHXmRFnuiIyYCrUN5Tyevq4vCo5AByOa3hBVX7z/k
ghIGu587UpxJVSMJ1eWpObHJoEVunnMvP992sZZrFmISjYyz2s7h8S2F6kcYbBmJ
gCGlZBy4oqjmpgFgvyhnZUDYwEvyzNcXWF4DlQG7GV3gNhw9N7Xl+ubGkxWcYsLm
AwIDAQAB
-----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 270424105945435751980145438548828809630773
 . . . . . . . . [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 2024-01-12 01:31:53 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-11 01:31:52 +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 'calendar.ai'
 . . . . . . . . [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 29237774182995386928543392071698560425292619388383672683883812522988912883271768251432678144761701022635210062279185042597114706752864660231426928645524157764215009459403423248793073426373105253223870718995485326507726701018370140285186132315207874604235817379798945380639465043430063911370680842724484115809638539375121047652276058904161669446069781929106815458594268445956127753302486793805424124980446437534796247501942272158308020629290800232050947932771987323655743727052363324809225788073484914574558696962594709205920301590627116447667678003711666249218061726395167444846402269115485690968686799710282469008899
 . . . . . . . . . . . . . . . . . . . . [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)
							53dfbb27b18ea55c23a00b1ade16297af9474c95
 . . . . . . . . . . . . . . . . [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 (32 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'calendar.ai'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.calendar.ai'
 . . . . . . . . . . . . . . . . [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)
							00ef0076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018cfb82f74f0000040300473045022040bafd7bde46100082420caa78f0c530e3fe770c62a8fe69568493a9969323c302210089cc720735786c6e37d8a2ecc09ca156130eccaf29383562779e8090b7c4fe32007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018cfb82f785000004030046304402202ab1a0420596c83b2c09f85bb64eeccf31d391f468f629cdbd8b7b6559457e1d02203729d2da4b143600d249b6c135468e9f1fb5f64a7c10693955ccc6d6489cf63c
 . . . . [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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