Cached · just now
76/100 SECURITY SCORE

Certificate Information

Subject
CN=tmobilepromotions.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
January 26, 2026
Valid Until
April 26, 2026 77 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
30:38:43:48:AF:64:D7:05:40:1A:03:70:0F:50:5D:EE:9B:C3:DC:61:3E:36:0C:D3:75:59:7D:AB:EB:96:59:BC
Alternative Names

Security Configuration

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

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

81 domains
dogandunder.com *.dogandunder.com

Other domains in certificate

aleakpro.net *.aleakpro.net
ana-maria.consulting *.ana-maria.consulting
blockchainacademy.co *.blockchainacademy.co
buildnotborn.com *.buildnotborn.com
buyingeverycar.com *.buyingeverycar.com
carlovandelux.com *.carlovandelux.com
casinodaysaffiliates.com *.casinodaysaffiliates.com
cheapwalkintubs.info *.cheapwalkintubs.info
cherylchasebooks.com *.cherylchasebooks.com *.random.cherylchasebooks.com
cloostermans.productions *.cloostermans.productions
containership.com.au *.containership.com.au
conversion.us *.conversion.us
coolwaterpoolsllc.com *.coolwaterpoolsllc.com
derekclements.net *.derekclements.net
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gafflebullmastiffs.com *.gafflebullmastiffs.com
goboatga.com *.goboatga.com
greeenskyonline.com *.greeenskyonline.com
homosexuality.com.au *.homosexuality.com.au
hybridcar.com.au *.hybridcar.com.au
knilife.com *.knilife.com
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palaces.com.au *.palaces.com.au
pethotels.org *.pethotels.org
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privates.com.au *.privates.com.au
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sudburyfarms.com *.sudburyfarms.com
thekneadyhomesteader.com *.thekneadyhomesteader.com
tmobilepromotions.com *.tmobilepromotions.com
verbs.com.au *.verbs.com.au