indexo.dev

sympy.org

.org crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 453 ms crawled 2026-05-18

US · 185.199.111.153 · AS54113 Fastly, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

Technology

CDN
Fastly
Server
GitHub.com

Registration

Registrar
NameCheap, Inc.
Created
2007-05-23
Expires
2029-05-23 1099 days left
Updated
2025-05-01
Name servers
  • ns1.linode.com
  • ns2.linode.com
  • ns3.linode.com

DNS records live

NS
  • ns1.linode.com
  • ns2.linode.com
  • ns3.linode.com
  • ns4.linode.com
  • ns5.linode.com
MX
Show 7 MX records
  • 1 aspmx.l.google.com
  • 10 aspmx2.googlemail.com
  • 10 aspmx3.googlemail.com
  • 10 aspmx4.googlemail.com
  • 10 aspmx5.googlemail.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
TXT
  • google-gws-recovery-domain-verification=53539086
  • google-site-verification=TRzBSjlZaWPNX7I5IHhpK1gaTk4rXknNaBSXdCbZudk

Email authentication weak

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

Certificate (current)

R12
from 2026-04-25 to 2026-07-24
Expires in 66 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.sympy.org/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Linked from (8)