blkstr.io

.io dns

First seen 2026-05-06 · Last seen 2026-05-06 · ok HTTP/1.1 200 1843 ms crawled 2026-05-19

US · 104.21.4.52 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: blkstr.
Language: en

Technology

CDN: Cloudflare

DNS records live

NS

rommy.ns.cloudflare.com
serenity.ns.cloudflare.com

Email authentication no MX

SPF: not published
DMARC: v=DMARC1; p=none; rua=mailto:postmaster@blkstr.io; ruf=mailto:postmaster@blkstr.io; fo=1
policy: none (monitoring only)
DKIM: no key found at common selectors

Certificate (current)

WE1

from 2026-05-18 to 2026-08-16

Expires in 87 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://blkstr.io/

findings

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