usdn.org

.org crawl

First seen 2026-04-18 · Last seen 2026-05-15 · ok HTTP/1.1 200 14482 ms crawled 2026-05-12

US · 34.202.75.199 · AS14618 Amazon.com, Inc.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title: Urban Sustainability Directors Network - USDN: Urban Sustainability Directors Network

Open Graph

title: Urban Sustainability Directors Network

Technology

CMS: Gatsby

Analytics

Google Tag Manager

Third-party hosts loaded (1)

www.googletagmanager.com×1

Social

Contact

Address: st issues »© 2026

Registration

Registrar

Tucows Domains Inc.

Created

2011-09-20

Expires

2027-09-20 488 days left

Updated

2025-11-05

Name servers

ns1.spinuhost.com
ns2.spinuhost.com
ns3.spinuhost.com

DNS records live

NS

ns1.spinuhost.com
ns2.spinuhost.com
ns3.spinuhost.com

MX

1 aspmx.l.google.com
10 aspmx2.googlemail.com
10 aspmx3.googlemail.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com

TXT

google-site-verification=7morV7Bsutkywj0J_fOxdoNOrLQpMv78X-jc7TJtvng
google-site-verification=eWMyzP5XvyoQ9diHmpK0BhNh0hxxBP7PUeckNbSKSMU
google-site-verification=JOjgg6u7SojdS1rCj4ZIDfo_8Lv9Ua2SN7bDv1AVMNw

Email authentication partial

SPF: v=spf1 include:_spf.google.com include:spf.mandrillapp.com include:_spf.createsend.com include:_spf.alchemer.com ?all
neutral (?all)
DMARC: v=DMARC1; p=none;
policy: none (monitoring only)
DKIM: no key found at common selectors

Certificate (current)

R13

from 2026-03-13 to 2026-06-11

Expires in 23 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://www.usdn.org/index.html

present

x-frame-options

findings

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

Header values

x-frame-options: SAMEORIGIN