indexo.dev

duoservers.com

.com crawl

First seen 2026-04-13 · Last seen 2026-05-15 · ok HTTP/1.1 200 1936 ms crawled 2026-05-07

US · 198.23.53.73 · AS14555 LiquidNet US LLC

Reputation 87/100 weak security headers no dmarc policy

Classifying

Technology

Server
nginx

Registration

Registrar
eNom, LLC
Created
2003-03-19
Expires
2035-03-19 3225 days left
Updated
2026-01-15
Name servers
  • dns1.duoservers.com
  • dns2.duoservers.com

DNS records live

NS
  • dns1.duoservers.com
  • dns2.duoservers.com
MX
  • 10 mx.duoservers.com

Email authentication partial

SPF
v=spf1 a mx a: ip4:198.23.53.5/32
no all qualifier
DMARC
not published
DKIM
  • default: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC7k9jVBYH29dKYaers9BfJ6ZWznsdbB0W81w8HtYeQw9GFn6NEySZ7ch9Lauhm8lN3HbnBPlYbTq2RK78gVB…
selectors probed

Certificate (current)

Sectigo Public Server Authentication CA DV R36
from 2025-11-12 to 2026-12-09
Expires in 203 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://duoservers.com/

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

Linked from (4)