johnmike.com

Issued by R3

About this certificate

This digital certificate with serial number 04:0f:b9:15:7b:0b:dd:e0:b2:da:59:6d:41:bf:38:ab:4d:07 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=johnmike.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:0f:b9:15:7b:0b:dd:e0:b2:da:59:6d:41:bf:38:ab:4d:07
Serial Number (int): 353799397943985861074289169402143064149255
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 68:fc:68:35:3e:56:c7:d6:54:4a:af:8c:64:30:de:6e:ff:51:57:db
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 24:cd:82:ae:a5:81:06:4e:0c:65:87:c8:81:ec:33:3b:26:dc:51:47
Fingerprint (sha256): 1f:d5:54:18:9d:cf:e4:7a:41:72:1c:5e:cd:f3:b4:0d:c4:d7:7b:1e:17:29:4c:c1:9e:6a:9e:4f:e7:51:eb:78

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

Revocation information

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

Check the revocation status for certificate johnmike.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for johnmike.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

johnmike.com
www.johnmike.com

Other certificates including the domain name johnmike.com

(limited to 100 certificates)
johnmike.com
johnmike.com
johnmike.com
johnmike.com
www.johnmike.com
johnmike.com
johnmike.com
johnmike.com

Certificate

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

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIF9jCCBN6gAwIBAgISBA+5FXsL3eCy2lltQb84q00HMA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzExMjcwNzAyMzVaFw0yNDAyMjUwNzAyMzRaMBcxFTATBgNVBAMT
DGpvaG5taWtlLmNvbTCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAIaZ
aPXRzp8M/hTyEZ6G5tWuV8s3McjiMXpFbgtFgnJxKRha2S8OJcanrgQri/9MrRJA
8tKTaMP8On92pmUTWwO+YU8cK0h39IRoOgecQ/kQ01BvLpLhy9yvsMNKP0T7vzej
Vb+l9gBtv2CO5N2uGiPAAQ2DIm1kC2cncPCvJUwo4WuUKN0IeXnm9d6maCwc+UA3
p51DOxG36pKZcJQEi6PI6ixyvODfI3Vbou5+7iK1MH27BB3cho1h7M7wIEHEj0wY
77I/+Z6t5PMNWYNcajOIhTospGXLEeJNcJ8IMOJtMniIlPjtlmYXvCupPH4UaZly
5oCPzVK3nZsbi68jLXk5OedICSzVKEWTlveDl5qXFAukhCv/HeH6xbLjJ4tpyn5q
uyiAJuyfoTJiCF0jgCrXFonjAwcvFtDQeSqXAaoCN/afttXDZwkHMznOJAQnyZOf
7GzPCkiNt0LUtsEvlOi4SiUQ3QFmqkQ7mbthzCLpN0tGfsHxC4LrbUfy1HXaJ2BA
9BSzLIy/QQgTtQ8EZoQIDVWu9WELQWQESPROpfAHrRB5sgbW18d3hurTp7vHikrT
LDlogX3No9r2ND5hRBuvw+IMi8/j5s2DIqFwGs5ofueNAvK5zReZXj4uX3+baVKp
xZ10GKRNGUoDJn4EB9kAGpMONHLI2tZ0AK7oC2KvAgMBAAGjggIfMIICGzAOBgNV
HQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1Ud
EwEB/wQCMAAwHQYDVR0OBBYEFGj8aDU+VsfWVEqvjGQw3m7/UVfbMB8GA1UdIwQY
MBaAFBQusxe3WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEF
BQcwAYYVaHR0cDovL3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8v
cjMuaS5sZW5jci5vcmcvMCkGA1UdEQQiMCCCDGpvaG5taWtlLmNvbYIQd3d3Lmpv
aG5taWtlLmNvbTATBgNVHSAEDDAKMAgGBmeBDAECATCCAQMGCisGAQQB1nkCBAIE
gfQEgfEA7wB1AEiw42vapkc0D+VqAvqdMOscUgHLVt0sgdm7v6s52IRzAAABjA/N
NjcAAAQDAEYwRAIgEhz7xmSMXuk0j6UPpvpkSUddLSpnsEQWuQypikckFrQCIAoo
ChU+AWqrydV7UL/toFRrYYGPGHMjJUQ2MqIRn7oYAHYAO1N3dT4tuYBOizBbBv5A
O2fYT8P0x70ADS1yb+H61BcAAAGMD802NQAABAMARzBFAiEA+gD7nkQ89iIfBmLR
GpdZk8AdC2pgeQqVp4efHGb9uLwCIGySDBhQLa+Hb/FFLgMQ+vLebU4yctPli7/Y
j3hLJq++MA0GCSqGSIb3DQEBCwUAA4IBAQB43xZkMkvpKZgNNpFHeue5Dd5VwNhL
Xk2T2XoXYYJa+cSE7jCel1tI0n+hfDgkq3kRuAzSBFKzF0UHX5lTMcZ4xQjeBoRQ
ixWsTvB1X2ONPtXGWi2le3qkq8IgqtqoILH794bkta07muz68MCOyUKojxAogUo7
6ZplpkO+nPdxWK361iLskXAmdGNwU3wJAV2Hgul2s0JyXMIxYUYMWzh95/VFoiJ4
pqJKh/d2coBYC9roA0/soVl+riCrx17QsPziAKMboODkrP3DkIta+CbIKa3Y+nzu
ewzGHqYtx/rnO+irFj0vDNdWUXDwEIlWtmxh7+Z7DRsRNQp79iL3kYgW
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAhplo9dHOnwz+FPIRnobm
1a5XyzcxyOIxekVuC0WCcnEpGFrZLw4lxqeuBCuL/0ytEkDy0pNow/w6f3amZRNb
A75hTxwrSHf0hGg6B5xD+RDTUG8ukuHL3K+ww0o/RPu/N6NVv6X2AG2/YI7k3a4a
I8ABDYMibWQLZydw8K8lTCjha5Qo3Qh5eeb13qZoLBz5QDennUM7EbfqkplwlASL
o8jqLHK84N8jdVui7n7uIrUwfbsEHdyGjWHszvAgQcSPTBjvsj/5nq3k8w1Zg1xq
M4iFOiykZcsR4k1wnwgw4m0yeIiU+O2WZhe8K6k8fhRpmXLmgI/NUredmxuLryMt
eTk550gJLNUoRZOW94OXmpcUC6SEK/8d4frFsuMni2nKfmq7KIAm7J+hMmIIXSOA
KtcWieMDBy8W0NB5KpcBqgI39p+21cNnCQczOc4kBCfJk5/sbM8KSI23QtS2wS+U
6LhKJRDdAWaqRDuZu2HMIuk3S0Z+wfELguttR/LUddonYED0FLMsjL9BCBO1DwRm
hAgNVa71YQtBZARI9E6l8AetEHmyBtbXx3eG6tOnu8eKStMsOWiBfc2j2vY0PmFE
G6/D4gyLz+PmzYMioXAazmh+540C8rnNF5lePi5ff5tpUqnFnXQYpE0ZSgMmfgQH
2QAakw40csja1nQArugLYq8CAwEAAQ==
-----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 353799397943985861074289169402143064149255
 . . . . . . . . [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 2023-11-27 07:02:35 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-25 07:02:34 +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 'johnmike.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 549117063709160075660130277138515509640890359802905383533852610072582798977870870831662977941317054415531745658155932528634887047962481371942128343182124275300029516101632798702436636632556936530527145461865630488924302194166110300519553563515421677335769940495554700299443017860403493595985978169667825168024959586476804516155661384800708004486815321001838483765404457778138646401889582763124748166012456169185941238139265882607598400129562781445281726922291082018060612985958252856672180810009643251201868764055780478367620785516282249942204858185146987097109330150452963781591941833802925638927017462204568714961309462342754346086350214791338102083681504219652522451522874119932149732704859983572352135228613836075025013645676798331233139286216138862663607071403013566358227203159175223862076002991143664227243684139278825791857735975649474141869744419423401453677527728006745826197597198055868413645036874910766911492569203702767702158430029688046308178265468705974793085360988394930726930352292520533668035453198867080347206550503664049316358184899276692003409263811780945274531615021279093085579231127483712609080259654874008102694796151872106065897600635114152020717323421334970129431544390132429408155658183232227458136367791
 . . . . . . . . . . . . . . . . . . . . [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)
							68fc68353e56c7d6544aaf8c6430de6eff5157db
 . . . . . . . . . . . . . . . . [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 (34 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'johnmike.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.johnmike.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)
							00ef00750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018c0fcd363700000403004630440220121cfbc6648c5ee9348fa50fa6fa6449475d2d2a67b04416b90ca98a472416b402200a280a153e016aabc9d57b50bfeda0546b61818f18732325443632a2119fba180076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c0fcd36350000040300473045022100fa00fb9e443cf6221f0662d11a975993c01d0b6a60790a95a7879f1c66fdb8bc02206c920c18502daf876ff1452e0310faf2de6d4e3272d3e58bbfd88f784b26afbe
 . . . . [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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