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danbricklin.com

.com crawl

First seen 2026-04-20 · Last seen 2026-05-17 · ok HTTP/1.1 200 1402 ms crawled 2026-05-14

US · 206.188.192.130 · AS19871 Network Solutions, LLC

Reputation 70/100 wrong cert weak security headers

Classifying

HTML metadata

Title
Dan Bricklin: The personal web site of the co-creator of VisiCalc
Description
Dan Bricklin -- The personal web site of the co-creator of VisiCalc

Technology

Server
openresty

Registration

Registrar
Network Solutions, LLC
Created
1999-09-23
Expires
2026-09-23 127 days left
Updated
2025-07-25
Name servers
  • ns25.worldnic.com
  • ns26.worldnic.com

DNS records live

NS
  • ns25.worldnic.com
  • ns26.worldnic.com

Email authentication no MX

SPF
not published
DMARC
not published
DKIM
no key found at common selectors

Certificate (current) wrong cert

Sectigo RSA Domain Validation Secure Server CA
from 2021-08-12 to 2022-09-13
Expired 1344 days ago

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 35/100 Checked over plain HTTP: http://danbricklin.com/

findings
  • checked over plain HTTP
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (9)

Linked from (2)