DV SSL/TLS Certificate for flagermus.dk

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the flagermus.dk DV SSL/TLS Certificate

This certificate with serial number 05:d9:aa:2b:50:2b:a4:2a:b2:4e:21:f2:a0:cd:f8:52:d4:04 for flagermus.dk was issued on by Let's Encrypt.

With 3 subject alternative names, this certificate can be used to secure multiple FQDNs. This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for flagermus.dk provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • 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)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 05:d9:aa:2b:50:2b:a4:2a:b2:4e:21:f2:a0:cd:f8:52:d4:04
Serial Number (int): 509628896934743618939418112357845825672196
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: c5:e3:dd:1b:d9:83:7f:e9:f9:e7:51:c9:ff:ef:60:7e:c3:80:73:b1
Authority Key Identifier: c5:cf:46:a4:ea:f4:c3:c0:7a:6c:95:c4:2d:b0:5e:92:2f:26:e3:b9

Fingerprint (SHA-1): 21:c2:1e:8d:22:33:77:eb:c1:7e:20:57:44:3c:24:51:5c:a2:b6:c4
Fingerprint (SHA-256): 1d:a3:17:0d:e4:60:ba:8c:2a:6a:74:e3:6f:84:eb:e7:6e:68:13:f4:ef:ae:69:1b:c3:ff:d3:64:73:c7:b6:be

Issuing Certificate URL: http://r11.i.lencr.org/

Revocation Information

OCSP Server: http://r11.o.lencr.org
CRL Distribution Point: http://r11.c.lencr.org/5.crl

Check the revocation status for certificate flagermus.dk
3
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for flagermus.dk

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
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

X.509 Certificate

The complete raw X.509 certificate details for flagermus.dk 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 509628896934743618939418112357845825672196
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R11'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-04-22 23:17:44 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-07-21 23:17:43 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'flagermus.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
 . . . . . . . . . . . . . . . . [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 863382444708656607860854516914494363215071150693389435511156750526377680515476035508560016828733835310106853095859305954318850060261315023386022283457571398859309990732324928152216101773895217629910794808167445846579458585538186545639708249485436038762148756561982967441742095290077004066118602478669542622391294656390656919849980613354170304821518273794906690016998050189625336493129410919992713336975863126435640114970411508886326561497825206123534605564306291673163640040476021433983003691414181974085264959070457996040573899875873471927693106980313302631304534884339250639758259211706555694106211489764913325148603565507122762399109155509361930706732317035506250423385430727732767498140512622359818730382198517298018679309914812768742076974326442768822658002671939889099021267672626429426617942942793504523227604329446341615576508202334496834712625125706935626821580088563708798339604443889881075473751884581421969172320955188185697210323034619539623898885499625229293591664497632385766242173449274562476661920542134502458165145099101344844968490990615676168690449727163786954220466404106471640424144277893169004146190308698704141125247818460750096068220053069913914972820318376530902853119759153204760603544979665413814173666087
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							c5e3dd1bd9837fe9f9e751c9ffef607ec38073b1
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName c5cf46a4eaf4c3c07a6c95c42db05e922f26e3b9
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (75 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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (52 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'flagermus.dk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'flagermusen.dk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.flagermusen.dk'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (38 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.c.lencr.org/5.crl'
 . . . . . . . . . . . . . . . . [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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f2007700dddcca3495d7e11605e79532fac79ff83d1c50dfdb003a1412760a2cacbbc82a0000019660009c7c00000403004830460221008d431ea2c3b57b4b1ef4bf09d9391bef4ee3e1a6723e45f4e054be3e62772136022100f62cc4235b2b84c5196dc4771ba147bb8f713dce13e4974dcaa3644916cc3c2d0077000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa34000001966000a4070000040300483046022100bf600954a62b2f9057a696f185556778cd3b3317a5b342027937f9c99d62560e02210090cd5b3872aff47f31a6200612196771d98f3712fc0c7942cec314b6bad08311
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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