brynjolfsson.com

HTML metadata

Technology

Server

Squarespace

CMS

WordPress

Fonts

• Adobe Fonts
• Google Fonts

Social

• linkedin
• twitter

Registration

Registrar

Network Solutions, LLC

Created

1998-05-14

Expires

2028-05-13 724 days left

Updated

2026-03-15

Name servers

• ns39.worldnic.com
• ns40.worldnic.com

DNS records live

NS

• ns39.worldnic.com
• ns40.worldnic.com

MX

Show 6 MX records

• 1 aspmx.l.google.com
• 10 alt3.aspmx.l.google.com
• 10 alt4.aspmx.l.google.com
• 15 e6mioktrinqqb2rowpcgggwnkuktuy7aa4zv66w5hmvn43k6bq5q.mx-verification.google.com
• 5 alt1.aspmx.l.google.com
• 5 alt2.aspmx.l.google.com

Email authentication weak

SPF

not published

DMARC

not published

DKIM

no key found at common selectors

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 55/100 Checked live page: https://www.brynjolfsson.com/

present

• strict-transport-security
• x-content-type-options

findings

• short HSTS max-age
• missing Content Security Policy
• missing frame protection
• missing Referrer Policy
• missing Permissions Policy

Links to (27)

• google.com×6
• aeaweb.org×6
• amazon.com×4
• arxiv.org×4
• digitalistpapers.com×4
• ebscohost.com×4
• fortune.com×4
• ft.com×4
• hbr.org×4
• imf.org×4
• informs.org×4
• jamanetwork.com×4
• linkedin.com×4
• microsoft.com×4
• nature.com×4
• nber.org×4
• npr.org×4
• nytimes.com×4
• oup.com×4
• researchgate.net×4
• science.org×4
• ssrn.com×4
• sternstrategy.com×4
• twitter.com×4
• ucl.ac.uk×4
• wiley.com×4
• agidefinition.ai×4

Linked from (1)

• agidefinition.ai×4