DNS Gurus
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73/100 SECURITY SCORE

Certificate Information

Subject
CN=*.crystallographycore.wisc.edu
Issuer
C=US, O=Amazon, CN=Amazon RSA 2048 M04
Valid From
October 08, 2025
Valid Until
November 06, 2026 357 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
FC:38:99:8A:0B:EC:F0:63:A1:04:12:49:68:62:04:3F:80:67:79:54:DA:06:72:EF:32:2E:1D:09:1C:B9:D8:88
Alternative Names
100 domains

Security Configuration

TLS Protocols
TLS 1.2
Forward Secrecy
Limited (Check cipher configuration)
Warnings
  • • TLS 1.3 is not supported (recommended)

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
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
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • 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
iea.wisc.edu wiscience.wisc.edu *.crystallographycore.wisc.edu *.csd.wisc.edu *.csld.wisc.edu *.cspks.wisc.edu *.culturesinconflict.wisc.edu *.cvc.wisc.edu *.cvrc.wisc.edu *.cyclotron.wisc.edu *.cytotechprogram.wisc.edu *.daadcenter.wisc.edu *.datawonks.wisc.edu *.dermatology.wisc.edu *.eap.wisc.edu *.earthpartnership.wisc.edu *.ecology.wisc.edu *.econ.wisc.edu *.ecs.wisc.edu *.ehs.wisc.edu *.elections.wisc.edu *.email.wisc.edu *.english.wisc.edu *.entomology.wisc.edu *.erp.wisc.edu *.esl.wisc.edu *.eyephoto.wisc.edu *.financialaid.wisc.edu *.firstwave.wisc.edu *.flame.wisc.edu *.foodsci.wisc.edu *.geewisc.wisc.edu *.geneticsinwisconsin.wisc.edu *.geography.wisc.edu *.ghi.wisc.edu *.global.wisc.edu *.gmwp.wisc.edu *.grad.wisc.edu *.greatlakesfibernetwork.wisc.edu *.gws.wisc.edu *.healthpolicy.wisc.edu *.herbarium.wisc.edu *.hipaa.wisc.edu *.hlcaccreditation.wisc.edu *.hmap.wisc.edu *.hmongstudies.wisc.edu *.horticulture.wisc.edu *.hps.wisc.edu *.iarp.wisc.edu *.ibio.wisc.edu *.iea.wisc.edu *.ifli.wisc.edu *.ils.wisc.edu *.imaging.wisc.edu *.integrativebiology.wisc.edu *.international.wisc.edu *.wiscience.wisc.edu craiglab.biochem.wisc.edu gaglialab.mmi.wisc.edu gallery.education.wisc.edu halllab.cals.wisc.edu metar.nursing.wisc.edu wiscprof.engr.wisc.edu *.aces.ecology.wisc.edu *.cap.education.wisc.edu *.composition.english.wisc.edu *.consortium.gws.wisc.edu *.craiglab.biochem.wisc.edu *.crgw.gws.wisc.edu *.csac.history.wisc.edu *.equilibrium.econ.wisc.edu *.fermentations.foodsci.wisc.edu *.gafis.frit.wisc.edu *.gaglialab.mmi.wisc.edu *.gallery.education.wisc.edu *.goldberg.history.wisc.edu *.halllab.cals.wisc.edu *.hollingsworth.history.wisc.edu *.info.em.wisc.edu *.intranet.genetics.wisc.edu *.introbio.integrativebiology.wisc.edu *.ithim.ghi.wisc.edu *.kinesintranet.education.wisc.edu *.lab.csd.wisc.edu *.metar.nursing.wisc.edu *.naughton.geography.wisc.edu *.new.grad.wisc.edu *.safaa.gws.wisc.edu *.sharp.genetics.wisc.edu *.staff.em.wisc.edu *.trl.education.wisc.edu *.unesco.gws.wisc.edu *.uwzm.ibio.wisc.edu *.uwzm.integrativebiology.wisc.edu *.valdivialabs.cvrc.wisc.edu *.webforms.imaging.wisc.edu *.wisconsinbumblebees.entomology.wisc.edu *.wiscprof.engr.wisc.edu *.zhonglab.genetics.wisc.edu *.symposium.gafis.frit.wisc.edu