indexo.dev

artofproblemsolving.org

.org crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 885 ms crawled 2026-05-19

US · 205.196.220.97 · AS26347 New Dream Network, LLC

Reputation 89/100 weak security headers dmarc monitor-only

sector nonprofit type homepage

HTML metadata

Title
Art of Problem Solving Initiative, Inc.

Technology

Server
Apache

Registration

Registrar
The Registry at Info Avenue, LLC d/b/a Spirit Communications
Created
2003-03-19
Expires
2027-03-19 303 days left
Updated
2026-03-23
Name servers
  • ns1.dreamhost.com
  • ns2.dreamhost.com
  • ns3.dreamhost.com

DNS records live

NS
  • ns1.dreamhost.com
  • ns2.dreamhost.com
  • ns3.dreamhost.com
MX
  • 1 smtp.google.com
  • 10 mxa.mailgun.org
  • 10 mxb.mailgun.org
TXT
  • 775439DE15

Email authentication partial

SPF
v=spf1 include:_spf.google.com ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:dmarc@artofproblemsolving.org
policy: none (monitoring only)
DKIM
  • google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAlKzTE7v9qyJ4IxJIHZw54fvcSLASC7gA+umAZWas4A7eEZgpix3enRY2kGJ9arvwj894aicTuqJUvC…
  • k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…
selectors probed

Certificate (current)

R13
from 2026-04-24 to 2026-07-23
Expires in 65 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Links to (2)

Linked from (1)