DNS Gurus
Open Cached · just now
77/100 SECURITY SCORE

Certificate Information

Subject
CN=acumos.org
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
September 26, 2025
Valid Until
December 25, 2025 50 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
43:13:58:AD:99:6D:E3:58:63:BD:54:06:D9:86:EF:7F:86:1B:E7:E7:8B:70:0C:0B:F3:CF:7B:F6:45:CF:9F:55
Alternative Names
100 domains

Security Configuration

TLS Protocols
TLS 1.2 TLS 1.3
Forward Secrecy
Supported (Modern clients use PFS)

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=31622400
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • Add X-Content-Type-Options: nosniff
  • • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • • Consider adding Permissions-Policy to control browser features

CAA Records (Certificate Authority Authorization)

CAA Records
Not Configured (Any CA can issue certificates)
CAA Issues
  • • No CAA records configured - any CA can issue certificates
Recommendations
  • • Implement CAA records to restrict which CAs can issue certificates for your domain
  • • This adds an extra layer of security against unauthorized certificate issuance
  • • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
  • • Consider adding 'iodef' record to receive security incident reports

Subject Alternative Names

100 domains
compliance.linuxfoundation.org lfprojects.linuxfoundation.org ltsi.linuxfoundation.org acrn.lfprojects.linuxfoundation.org actlf.lfprojects.linuxfoundation.org acumos.lfprojects.linuxfoundation.org adlik.lfprojects.linuxfoundation.org agllf.lfprojects.linuxfoundation.org aiexplainability.lfprojects.linuxfoundation.org aifairness.lfprojects.linuxfoundation.org alvarium.lfprojects.linuxfoundation.org angel.lfprojects.linuxfoundation.org anuket.lfprojects.linuxfoundation.org artoolbox.lfprojects.linuxfoundation.org aswf.lfprojects.linuxfoundation.org bedrock.lfprojects.linuxfoundation.org cdla.lfprojects.linuxfoundation.org ciilf.lfprojects.linuxfoundation.org cimodel.lfprojects.linuxfoundation.org danos.lfprojects.linuxfoundation.org datashim.lfprojects.linuxfoundation.org dent.lfprojects.linuxfoundation.org dpdk.lfprojects.linuxfoundation.org dronecode.lfprojects.linuxfoundation.org elastic.lfprojects.linuxfoundation.org elisa.lfprojects.linuxfoundation.org forestflow.lfprojects.linuxfoundation.org fossology.lfprojects.linuxfoundation.org genevaers.lfprojects.linuxfoundation.org horovod.lfprojects.linuxfoundation.org iovisor.lfprojects.linuxfoundation.org jdf3mf.lfprojects.linuxfoundation.org jdfprojects.lfprojects.linuxfoundation.org jointdevfnd.lfprojects.linuxfoundation.org kernelci.lfprojects.linuxfoundation.org lfcip.lfprojects.linuxfoundation.org llc.lfprojects.linuxfoundation.org ltsi.lfprojects.linuxfoundation.org lvfs.lfprojects.linuxfoundation.org networkgl.lfprojects.linuxfoundation.org nnstreamer.lfprojects.linuxfoundation.org oapi.lfprojects.linuxfoundation.org ocp.lfprojects.linuxfoundation.org odim.lfprojects.linuxfoundation.org okopenkinetic.lfprojects.linuxfoundation.org onap.lfprojects.linuxfoundation.org openbmc.lfprojects.linuxfoundation.org openchain.lfprojects.linuxfoundation.org opendata.lfprojects.linuxfoundation.org opendaylight.lfprojects.linuxfoundation.org openidl.lfprojects.linuxfoundation.org openjs.lfprojects.linuxfoundation.org openssfv2.lfprojects.linuxfoundation.org openswitch.lfprojects.linuxfoundation.org opnfv.lfprojects.linuxfoundation.org oransc.lfprojects.linuxfoundation.org os-climate.lfprojects.linuxfoundation.org osc.lfprojects.linuxfoundation.org ossweb.lfprojects.linuxfoundation.org projectemco.lfprojects.linuxfoundation.org projectl3af.lfprojects.linuxfoundation.org rcon.lfprojects.linuxfoundation.org sddi.lfprojects.linuxfoundation.org sof.lfprojects.linuxfoundation.org sote.lfprojects.linuxfoundation.org sparklyr.lfprojects.linuxfoundation.org spdx.lfprojects.linuxfoundation.org tf.lfprojects.linuxfoundation.org tony-project.lfprojects.linuxfoundation.org ucfound.lfprojects.linuxfoundation.org

Other domains in certificate

acumos.org www.acumos.org
adlik.ai
alvarium.org
angelml.ai
automatecompliance.org
automotivelinux.org
cdla.dev
cip-project.org
dronecode.org
forestflow.ai
genevaers.com
iovisor.org
foundation.kernelci.org kernelci.org
lfprojects.org
onap.org
openbmc.org
openkinetic.org
opensecuritycontroller.org
opensourcesecurity.dev
openswitch.net
opnfv.org
projectacrn.org
archive.r-consortium.org
sofproject.org
sparklyr.ai
tungsten.io
uc.foundation
xgvela.org