app.flatironschool.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:fb:55:d4:e3:62:41:dc:e0:44:e9:b6:20:81:6c:e4:d7:d8 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=app.flatironschool.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:fb:55:d4:e3:62:41:dc:e0:44:e9:b6:20:81:6c:e4:d7:d8
Serial Number (int): 346861821650903745005559902449805952341976
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f3:66:25:4c:88:02:80:53:2c:c8:5d:c1:6f:e7:2c:5f:1a:6a:9f:03
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): ee:d6:54:04:ed:34:55:ad:5e:56:c3:84:5d:49:b8:4f:c8:c5:fe:ef
Fingerprint (sha256): 60:ab:66:fe:a4:46:26:e3:75:8a:49:38:b3:78:51:32:ac:2b:b4:ee:71:ce:b0:b5:e5:4a:fd:3f:48:80:27:9a

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate app.flatironschool.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for app.flatironschool.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

app.flatironschool.com

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Certificate

The complete raw certificate details for app.flatironschool.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 346861821650903745005559902449805952341976
 . . . . . . . . [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 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-16 10:06:42 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-16 10:06:42 +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 'app.flatironschool.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 959452394918080373221944238887649195588185693113460675388585455505660775064048508364793690987913831195226022726616502725748388428191627460482776785355326171829592797101643171261427039114741749128208375072050285478034710198747993747278074662181913688577953432452151134456335936216458154021067896764853230853304564884081970631298771025500553713622487270158201665041826758562457975774073604860343528190541065557489454903792809276422112469854501432653863960805951927473295387331527539674721073604084744837517717050332500580066197839550180192476207476415403996722177962027895944766170496540186306711158290139575403227274749678274693918810482662984754177135235028103222819082207212240163105370375008494766565540630789730222634075089105974646432973295784296332445190976354558483168496912489198560563485980271133646495377048670680463241373984215012623072504782188207498985247724785094626170440970120433896894971178108450770077304325854046182512897628439929289277318903089938169458643395227782207308900768534199693194101020083377457306499774009000095940875392378521398361342220786160950753367561106699274814353790043709074782566507041849829574209088039619213972658047162369246973801139829336111606610386518966287662086346610591037066086355129
 . . . . . . . . . . . . . . . . . . . . [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)
							f366254c880280532cc85dc16fe72c5f1a6a9f03
 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (26 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'app.flatironschool.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)
							00ef007500e712f2b0377e1a62fb8ec90c6184f1ea7b37cb561d11265bf3e0f34bf241546e000001704dadd4cd0000040300463044022013bad6c124f3769d52a3a4beea7b36f9edbf22c6c19b00f1e8cfd9b65f14d691022059e6f9007b463048d40271abc69de8a738dd6e98f83865dab777fc68af47459900760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c000001704dadd500000004030047304502205229a80dda5df321e02f7229c445c41e4adfa2aa2a6a738d2da9ec16f3cca4c7022100a428dbd1737e2ee7df7ee42f861d7e973051d3234ee62e179f1a2cbacf4a0a9c
 . . . . [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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