font.ubuntu.com

Issued by R3

About this certificate

This digital certificate with serial number 04:f6:b1:92:43:55:a1:51:d4:71:0b:63:de:51:35:84:b9:1d 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=font.ubuntu.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:f6:b1:92:43:55:a1:51:d4:71:0b:63:de:51:35:84:b9:1d
Serial Number (int): 432394638785892888063997500374115676371229
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: f7:ea:6a:12:17:fe:96:71:19:88:ca:68:f0:73:17:14:0e:9d:82:9e
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): e1:8e:f8:6e:4b:eb:89:0c:86:d5:14:09:64:f2:09:ab:6a:5b:bc:6b
Fingerprint (sha256): 07:5f:2b:14:44:69:20:66:66:d9:81:39:43:35:cd:11:68:b9:18:57:68:4a:34:95:b9:41:9c:5f:3c:f8:e4:45

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

Revocation information

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

Check the revocation status for certificate font.ubuntu.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for font.ubuntu.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

font.ubuntu.com
www.font.ubuntu.com

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(limited to 100 certificates)
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maas.ubuntu.com
tour.ubuntu.com
myapps.developer.ubuntu.com
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auth.esm.staging.ubuntu.com
design.ubuntu.com
jp.ubuntu.com
start.ubuntu.com
jp.staging.ubuntu.com
staging.ubuntu.com
docs.ubuntu.com
fridge.ubuntu.com
hr.archive.ubuntu.com
upload.apps.staging.ubuntu.com
assets.ubuntu.com
daisy.staging.ubuntu.com
webstats.ubuntu.com
juju.ubuntu.com
old-releases.ubuntu.com
certification.staging.ubuntu.com
assets.ubuntu.com
daisy.ubuntu.com
*.ubuntu.com
phone.docs.ubuntu.com
cn.ubuntu.com
assertions.ubuntu.com
docs.ubuntu.com
redirect.ubuntuforums.org
code-review.phablet.ubuntu.com
ask.ubuntu.com
discourse.ubuntu.com
upload.apps.staging.ubuntu.com
design.staging.ubuntu.com
keyserver.ubuntu.com
insights.ubuntu.com
ubuntu.grad.hr
developer.ubuntu.com
cloud-images.ubuntu.com
phone.docs.ubuntu.com
lists.ubuntu.com
jp.ubuntu.com
help.ubuntu.com
buy.ubuntu.com
merges.ubuntu.com
support.one.ubuntu.com
people.ubuntu.com
assets.ubuntu.com
*.staging.ubuntu.com
brainstorm.ubuntu.com
font.ubuntu.com
assets.ubuntu.com
pages.ubuntu.com
system-image.ubuntu.com
apps.ubuntu.com
ubuntu.com
login.staging.ubuntu.com
cdimage.ubuntu.com
certification.ubuntu.com
people.ubuntu.com
assertions.staging.ubuntu.com
fr.archive.ubuntu.com
qa.cube.ubuntu.com
releases.ubuntu.com
docs.ubuntu.com
bileto.ubuntu.com
keyserver.ubuntu.com
errors.staging.ubuntu.com
login-lp.staging.ubuntu.com
keyserver.ubuntu.com
brainstorm.ubuntu.com
kernel.ubuntu.com
hyperscale.ubuntu.com
fridge.ubuntu.com
buy.ubuntu.com
odm.ubuntu.com
start.ubuntu.com
assertions.ubuntu.com
errors.ubuntu.com
patches.ubuntu.com
discourse.ubuntu.com
daisy.ubuntu.com
support.one.ubuntu.com
certification.staging.ubuntu.com
summit.ubuntu.com
api.snapcraft.io
phone.docs.ubuntu.com
geoname-lookup.ubuntu.com
hockeypuck.ubuntu.com
start.ubuntu.com
try.cloud.staging.ubuntu.com

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzvQm1uUA/w8sOotNNK2t
+E16aMUH3jMd5lp9pOcetAz6V8fVuT6SZ1DEqSr2Fxxxd/ktUTc3GgpEu/xLgcFY
mzVFuXfTrciF84JkDsjoF2Sn8ID8CSwaRH5dwVe2k+SQZdTIAjDmeYKyMuHYdt04
4fXTSFKeqEWBQKsfg6ZNIndiaeZ3lah7I7xdd8DqbOdxoWDvDX1rQYfYKYk2gEZS
JoxEnEvMl52NH8ARg5t4DRg8vPlux0zCAmxviVyi/CVqZcd7Z2w7NYmEnkllBebq
xGhhYsHoU46MN+7B2zq4K6anlr+mUXLirVmzDutCiInkW5BVudE/xOHGdvmUOkQv
JwIDAQAB
-----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 432394638785892888063997500374115676371229
 . . . . . . . . [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 2024-03-30 10:27:55 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-28 10:27:54 +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 'font.ubuntu.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 26125486521638431260463594484956144946883153795318288957109523165092840590052719142233625320159679277375622037667362772452363653780695955029292776902027956405875449271263193806880914593377154849232220594056329591618976027108708529288544821201902620954024053072907045848218003616873423358392804592429574781559114629976387969867651762911916053224261053354053791407272343284568418643804542218393512815630320573048731558708588554668968188277982494075007375423510392855104643663198150938092097152948453873902593372282051900419617019571866914321277936138329991492013488874440894585434313827283255049265420431892601903525671
 . . . . . . . . . . . . . . . . . . . . [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)
							f7ea6a1217fe96711988ca68f07317140e9d829e
 . . . . . . . . . . . . . . . . [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 (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'font.ubuntu.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.font.ubuntu.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0075003f174b4fd7224758941d651c84be0d12ed90377f1f856aebc1bf2885ecf8646e0000018e8f1dc2cd000004030046304402202ff2ddd41f9cce71a76ecda3980f4244f38e2e05429cc184c35d04667d60819f022049e0c3474c3949ef581dfa23025809fe8355675fd5c64ac91b2fef7ff1ad611900760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018e8f1dc2cf000004030047304502210099b85b38ebae4d0389b72da8d39ce4aa109d79bb96f1467f9e9b861cc7943121022055a34fbd273f23494222e5f40340e326e96f4ae4811dc1980f362f1e721d0b30
 . . . . [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)
		0016ac054a8f5b0159262d81e16b44db58bc5c2ee37a235faee6bf45874c4c7f7b970e05051901aedeef45fdf7f3471d21db637ae9a03e3b9733cdf38a5868328c7473296d9ff07fa834f7c19e685bb9d242403db6397094529b5eef50536addcf844ded4acf8098c61a336006240fd0127a309082ae49703ab31eddefda86f8cfc442d5af7dfee595a69eb63b3c9bfeda16b04df854b0653845abd5bff3b5a6fb9c9ab2881a07dc33f955f4e59bbe4207f4101891cc77825bc3e867eb3ee69f32a42f12c2c4bb4d5fb615aac8782ebc37e74ed25565e998063dcbc46a5e07def3bbc24e1b815b076bceb7ae3859fca19ba557c711395c63f1cdbe73f7dd978475