www.lisabohn.dk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:af:1f:85:e3:44:9b:d3:cc:c8:59:11:1c:5d:aa:af:6e:44 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=www.lisabohn.dk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:af:1f:85:e3:44:9b:d3:cc:c8:59:11:1c:5d:aa:af:6e:44
Serial Number (int): 408040459191099456523548704512647931850308
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: c4:ad:b9:a1:0a:9a:c2:ad:cd:6a:49:1e:2c:28:d5:d4:e1:1c:a0:19
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): e5:72:94:c6:45:96:73:30:cc:13:f2:2b:79:ae:4a:b9:46:39:f9:fd
Fingerprint (sha256): b2:7a:60:84:d6:8f:bd:2b:21:ba:c9:60:ab:e0:47:89:37:f7:be:1b:7c:b9:64:54:f1:08:37:56:05:70:c3:54

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 www.lisabohn.dk

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.lisabohn.dk

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

www.lisabohn.dk

Other certificates including the domain name lisabohn.dk

(limited to 100 certificates)
www.lisabohn.dk
www.lisabohn.dk
lisabohn.dk
www.lisabohn.dk
lisabohn.dk
lisabohn.dk
lisabohn.dk
www.lisabohn.dk
www.lisabohn.dk
lisabohn.dk
lisabohn.dk
www.lisabohn.dk
lisabohn.dk
www.lisabohn.dk
lisabohn.dk
www.lisabohn.dk
lisabohn.dk
www.lisabohn.dk
lisabohn.dk
www.lisabohn.dk
www.lisabohn.dk
www.lisabohn.dk
www.lisabohn.dk
lisabohn.dk
lisabohn.dk
www.lisabohn.dk
lisabohn.dk
lisabohn.dk
lisabohn.dk
lisabohn.dk
lisabohn.dk
www.lisabohn.dk
www.lisabohn.dk
www.lisabohn.dk

Certificate

The complete raw certificate details for www.lisabohn.dk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA44D6txXrO6ipPMIuCLcm
jsQyvB6G7xpZCPYdVMQtNFas1zMbe++5ydFWfoMAtAAbz4SY3lFy3xcfHqK+Hc8t
9HAUjbsv6VwVG8lirT+wvDnMUOFYx5VwerC4asXYsw2hgkz7PAlBa1KxygpDW4au
Nc0Qze9QeJPc54GCS76atL1MG8FDv0QhLScCSfJZVlqmuYkcKXF6CK9u93IDK9jb
RFFooBD9EVJ3NDePtNgUMICG94tojX1OnZrQDR4TtixdIn5LPKrkCEd6dSOF8pj7
qPepso5yxo7yWsngt/xz/9E/SYrolFrSae1A2w7p/Cu23a6T66LTbmtYyoFN3anz
KwIDAQAB
-----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 408040459191099456523548704512647931850308
 . . . . . . . . [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 2018-09-05 06:20:48 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-12-04 06:20:48 +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 'www.lisabohn.dk'
 . . . . . . . . [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 28719697318302597006703415593764589099957558519780314004193479320335326221572713215498409893416383404877971150728722541825763734261204851246996356520235295866936455570293037444631894455725990637327177522156457394661630441846215007767800925931629067348886613674573458356015295412562364853488263689288890236987646356168531410068626488402590596044007289882034703449407493820717397476748755290653680208972307775199121735586037148136889507761461345323171711891434790486713142598884206157090450390268915853005717955842093231626196367773768623145054344720496052025221620386821207788098809787499993388116347688632724232991531
 . . . . . . . . . . . . . . . . . . . . [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)
							c4adb9a10a9ac2adcd6a491e2c28d5d4e11ca019
 . . . . . . . . . . . . . . . . [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 (19 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.lisabohn.dk'
 . . . . . . . . . . . . . . . . [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 (246 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 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee0075006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d91300000165a89ae4de0000040300463044022022fb9fff5ad100aecfcc63502b6fffb18a121ef4d448249f586fd7d66720dd200220763ca59d193d58dc439ccad8a685b53fc1bb9d038de739ae2577203d1f7aa6dc007500a4501269055a15545e6211ab37bc103f62ae5576a45e4b1714453e1b22106a2500000165a89ae49c000004030046304402200ecf3647709e79def44f6948de9f3f39afedb28bf5457ce496f57adaf701d0a102206f9b88e825003d3cbfd3089a6a5d04b419fc369459eccdacf12dcd8de848856e
 . . . . [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)
		0065d674b2a173bdd7b5cbb36257c0bffe5f87827c6364ffa0fdddc964a7e65a421a691304df7f1127e7d93d77152b6a803eebffeee8426bd606adc6b15c3045b9eb3d894f0a3e2e8a7c6029d60cb35ca80025f84e0f58d319e4ec1822f22a608d977651923d5f8f2c56962afb96d776b1c0ab04563c7c238b26379dd40d4aae746ba9fed0c4f328d5e4966a3c4d66c68cb5e0c16d2b87bf9da03c2933a59704627b52c2fb790f3b80194194eca84fb6aa59b9cd221ecb1ed78f49b2d8fd08ffd6a20b6022b531e267ce7d1133c8bb1c5293951728fea97a5714f6ee15fa96ae25b206c178536b69dc48015f971c6d5025b357affc307f520a76961110567dd1c0