zmap.io

.io crawl

First seen 2026-04-14 · Last seen 2026-05-11 · ok HTTP/1.1 200 691 ms crawled 2026-05-08

US · 185.199.110.153 · AS54113 Fastly, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title: The ZMap Project
Description: The ZMap Project is a collection of open source tools that enable researchers to perform large-scale studies of the hosts and services that compose the public Internet.
Language: en

Technology

CDN: Fastly
Server: GitHub.com

Analytics

Google Tag Manager

Fonts

Google Fonts

Third-party hosts loaded (3)

code.jquery.com×1
fonts.googleapis.com×1
www.googletagmanager.com×1

Social

DNS records live

NS

ns-cloud-c1.googledomains.com
ns-cloud-c2.googledomains.com
ns-cloud-c3.googledomains.com
ns-cloud-c4.googledomains.com

MX

1 aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com

Email authentication weak

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

Certificate (current)

R12

from 2026-04-27 to 2026-07-26

Expires in 68 days

Full certificate history on crt.sh ↗

HTTP security headers

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

findings

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

Links to (4)

Linked from (5)