staging.ws.skiwo.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:7e:da:e4:79:20:fd:23:a2:5f:e3:49:e2:67:e7:79:71:bb 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=staging.ws.skiwo.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:7e:da:e4:79:20:fd:23:a2:5f:e3:49:e2:67:e7:79:71:bb
Serial Number (int): 304503394030869049966238489633664989229499
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 6e:fb:e6:f9:27:a5:5e:00:e4:21:d7:fc:14:a6:28:a8:a1:40:50:5a
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): a3:e1:52:14:8c:99:35:b8:3b:10:1d:e9:97:68:07:c8:49:b8:8a:e7
Fingerprint (sha256): da:0c:94:7d:9e:cb:4d:31:07:1b:7f:ec:a2:9e:dd:8a:25:b4:cd:91:53:53:f7:f8:98:84:47:34:2a:06:a2:b3

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 staging.ws.skiwo.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for staging.ws.skiwo.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

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

staging.ws.skiwo.com
staging.ws.tikktalk.com

Other certificates including the domain name skiwo.com

(limited to 100 certificates)
staging.my.skiwo.com
www.tikktalk.com
www.tikktalk.com
www.tikktalk.com
time.skiwo.com
dev.my.skiwo.com
video.skiwo.com
skiwo.com
wordpressph.skiwo.com
staging.my.skiwo.com
skiwo.com
skiwo.com
dev.ws.skiwo.com
staging.my.skiwo.com
www.skiwo.com
my.skiwo.com
staging.www.tikktalk.com
staging.my.tikktalk.com
skiwo.com
staging.www.skiwo.com
skiwo.com
www.tikktalk.com
beta.skiwo.com
skiwo.com
dev.ws.skiwo.com
skiwo.com
beta.skiwo.com
video.tikktalk.com
skiwo.com
skiwo.com
video.salita.no
skiwo.com
www.skiwo.com
skiwo.com
skiwo.com
skiwo.com
skiwo.com
staging.my.skiwo.com
staging.www.skiwo.com
wrk-osl.videonor.net
my.tikktalk.com
beta.skiwo.com
wordpressph.skiwo.com
skiwo.com
skiwo.com
ws.skiwo.com
skiwo.com
my.skiwo.com
my.skiwo.com
staging.ws.skiwo.com
skiwo.com
skiwo.com
ws.skiwo.com
go.skiwo.com
www.tikktalk.com
dev.my.skiwo.com
ws.skiwo.com
dev.ws.skiwo.com
wrk-osl.videonor.net
my.skiwo.com
frankfurt.plusstidhome.skiwo.com
frankfurt.plusstidhome.skiwo.com
staging.my.skiwo.com
wrk-osl.videonor.net
wrk-osl.videonor.net
staging.ws.skiwo.com
www.skiwo.com
wordpressph.skiwo.com
ws.skiwo.com
wrk-osl.videonor.net
staging.www.skiwo.com
staging.my.skiwo.com
wordpressph.skiwo.com
www.skiwo.com
www.skiwo.com
wordpressph.skiwo.com
video.skiwo.com
skiwo.com
www.skiwo.com
wordpressph.skiwo.com
wrk-osl.videonor.net
timetracking.skiwo.com
wrk-osl.videonor.net
admin.skiwo.com
wrk-osl.videonor.net
www.skiwo.com
skiwo.com
wrk-osl.videonor.net
skiwo.com
skiwo.com
www.tikktalk.com
timereports.skiwo.com
staging.ws.skiwo.com
dev.ws.skiwo.com
skiwo.com
staging.my.tikktalk.com
my.skiwo.com
skiwo.com
skiwo.com
skiwo.com

Certificate

The complete raw certificate details for staging.ws.skiwo.com in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFJTCCBA2gAwIBAgISA37a5Hkg/SOiX+NJ4mfneXG7MA0GCSqGSIb3DQEBCwUA
MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD
ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xNzA0MjgwOTU0MDBaFw0x
NzA3MjcwOTU0MDBaMB8xHTAbBgNVBAMTFHN0YWdpbmcud3Muc2tpd28uY29tMIIB
IjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyA1p4ArVI/D1KWyhyK0w3K/m
rt9c8P9xWyNL87yGPFGDijOcBJ/+nJt8Oz8cSysksWLruVlNWbLUTk55fhRjyVQ1
HNWt9W0zgkIH9ltEkjA5Jawq02xHds21lNLypgLc+SSTjp5Dfr2hQPMM0jRLFyTC
mx/ji5UKyRz/CtL/nNKG+J5oqKx2szi65GmMUczwDRi65Bqk3zEFxkB6s5cRlwX9
i84XPUwEVPc/R2TfRH4dkYQUu/G4X1Zo5AapeqG9i70PpMC9MUE/Sp8Y2QvKd/V2
IklEJY+ma8DY97+WZPkdNdQ4ktEvYsKSWYEzNpGxnee/VyMPKaulIGiCtU5jjQID
AQABo4ICLjCCAiowDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMB
BggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBRu++b5J6VeAOQh1/wU
piiooUBQWjAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBwBggrBgEF
BQcBAQRkMGIwLwYIKwYBBQUHMAGGI2h0dHA6Ly9vY3NwLmludC14My5sZXRzZW5j
cnlwdC5vcmcvMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2Vu
Y3J5cHQub3JnLzA4BgNVHREEMTAvghRzdGFnaW5nLndzLnNraXdvLmNvbYIXc3Rh
Z2luZy53cy50aWtrdGFsay5jb20wgf4GA1UdIASB9jCB8zAIBgZngQwBAgEwgeYG
CysGAQQBgt8TAQEBMIHWMCYGCCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNy
eXB0Lm9yZzCBqwYIKwYBBQUHAgIwgZ4MgZtUaGlzIENlcnRpZmljYXRlIG1heSBv
bmx5IGJlIHJlbGllZCB1cG9uIGJ5IFJlbHlpbmcgUGFydGllcyBhbmQgb25seSBp
biBhY2NvcmRhbmNlIHdpdGggdGhlIENlcnRpZmljYXRlIFBvbGljeSBmb3VuZCBh
dCBodHRwczovL2xldHNlbmNyeXB0Lm9yZy9yZXBvc2l0b3J5LzANBgkqhkiG9w0B
AQsFAAOCAQEAUhAmtow82BSqh2oVbMNLBhyH+RbOPV1RQPqfQmaSoJHv4nor6N0X
Ej1aqGxWVhpFUGae8DuG7+t7wSGurc94GvfhF8u/QJarygGjVJVym801bLv3DRhV
H3IsqYRraMFvedvY6BqaQHLfJA7WMbQLJkDq3KgL2OrYiCWKkDaK4C4VLyC9p5tm
J7yEBxET50fiHvkX/9JmNAFzhtFtaGw5l3oEx20dUIWbs7do1bjYtYbwKmw1wNpu
wfG5wFHtsDnSdVvFZwmmbj0omMtE+MTgD3YVbPVmxjUy8sCfvyLf4xAiFL8LawTc
YAGH2dfBCBgWfi8V6Po7GOZxirJH8e/G3Q==
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyA1p4ArVI/D1KWyhyK0w
3K/mrt9c8P9xWyNL87yGPFGDijOcBJ/+nJt8Oz8cSysksWLruVlNWbLUTk55fhRj
yVQ1HNWt9W0zgkIH9ltEkjA5Jawq02xHds21lNLypgLc+SSTjp5Dfr2hQPMM0jRL
FyTCmx/ji5UKyRz/CtL/nNKG+J5oqKx2szi65GmMUczwDRi65Bqk3zEFxkB6s5cR
lwX9i84XPUwEVPc/R2TfRH4dkYQUu/G4X1Zo5AapeqG9i70PpMC9MUE/Sp8Y2QvK
d/V2IklEJY+ma8DY97+WZPkdNdQ4ktEvYsKSWYEzNpGxnee/VyMPKaulIGiCtU5j
jQIDAQAB
-----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 304503394030869049966238489633664989229499
 . . . . . . . . [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 2017-04-28 09:54:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-07-27 09:54:00 +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 'staging.ws.skiwo.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 25254275473502427464833235593635116672158223120674688100619112142713619681495581428587942658612925977012859380784247334326960027712962474146596263383263221062075390197549439391908921900247734335887034954103127281198423041833261160979948488409010767726646258378712173192575587349287167827872445994210667008052211062782073098310703465431595274346345906378203215187923780389673737207619026968897879714656387366642025574857705801488704563094343508591512274793408622479307696490191732758043452629791632806839752935618067688020273657004898734255450678538081114971811159292495258826507865048587293220464913160918657393386381
 . . . . . . . . . . . . . . . . . . . . [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)
							6efbe6f927a55e00e421d7fc14a628a8a140505a
 . . . . . . . . . . . . . . . . [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 (100 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 (49 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'staging.ws.skiwo.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'staging.ws.tikktalk.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 (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 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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