sierra.com
HTML metadata
Technology
- CDN
- Akamai
- Fonts
-
- Google Fonts
Third-party hosts loaded (1)
- fonts.googleapis.com×1
Registration
- Registrar
- MarkMonitor Inc.
- Created
- 1991-09-25
- Expires
- 2027-09-24 492 days left
- Updated
- 2025-08-23
- Name servers
-
- a1-117.akam.net
- a14-66.akam.net
- a18-67.akam.net
- a22-64.akam.net
- a5-65.akam.net
- a7-66.akam.net
DNS records live
- NS
-
- a1-117.akam.net
- a14-66.akam.net
- a18-67.akam.net
- a22-64.akam.net
- a5-65.akam.net
- a7-66.akam.net
- MX
-
- 10 mxa-00081a02.gslb.pphosted.com
- 10 mxb-00081a02.gslb.pphosted.com
- 20 mx0a-00081a02.pphosted.com
- 20 mx0b-00081a02.pphosted.com
- TXT
-
google-site-verification=6fDczSvMJO9oJmJNVn12LSPzijhyTUHTlEMSfmHb1r4yahoo-verification-key=YsGxRHqFSre2qGQ8PmxHnXX0wxSjrjT28BMBnJJHLFE=_kbjv48zzq25pmo06y45ibslm7qrplaf
Email authentication strong
- SPF
-
v=spf1 ip4:205.220.171.102 ip4:205.220.182.205 ip4:205.220.173.171 ip4:205.220.161.171 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~allsoftfail (~all) - DMARC
-
v=DMARC1; p=reject; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com; fo=1;policy: reject (enforced) - DKIM
- no key found at common selectors
Certificate (current)
DigiCert Global G3 TLS ECC SHA384 2020 CA1
Expires in 157 days
HTTP security headers
- present
-
- strict-transport-security
- x-frame-options
- findings
-
- missing Content Security Policy
- missing content type protection
- missing Referrer Policy
- missing Permissions Policy
Header values
- x-frame-options
SAMEORIGIN- strict-transport-security
max-age=31536000 ; includeSubDomains ; preload