userstack.com

.com crawl

First seen 2026-04-16 · Last seen 2026-05-11 · ok HTTP/1.1 200 2461 ms crawled 2026-05-11

US · 104.21.78.197 · AS13335 Cloudflare, Inc.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
userstack - Free User-Agent Lookup & Device Detection API
Description
Take control of your user experience with userstack, a lightweight User-Agent lookup JSON and XML API for real-time device, browser, and OS detection.
Language
en
Canonical
https://userstack.com/

Technology

CDN
Cloudflare
Analytics
  • Google Tag Manager

Third-party hosts loaded (4)

  • cdn.linearicons.com×2
  • cdnjs.cloudflare.com×2
  • cdn.firstpromoter.com×1
  • www.googletagmanager.com×1

Social

Registration

Registrar
GoDaddy.com, LLC
Created
2011-09-01
Expires
2026-09-01 105 days left
Updated
2024-09-02
Name servers
  • abby.ns.cloudflare.com
  • ram.ns.cloudflare.com

DNS records live

NS
  • abby.ns.cloudflare.com
  • ram.ns.cloudflare.com
MX
  • 10 aspmx.l.google.com
  • 20 alt1.aspmx.l.google.com
  • 50 alt2.aspmx.l.google.com
  • 60 alt3.aspmx.l.google.com
  • 70 alt3.aspmx.l.google.com
TXT
Show 4 TXT records
  • zoho-verification=zb15467054.zmverify.zoho.com
  • zoho-verification=zb93651631.zmverify.zoho.eu
  • google-site-verification=xKJ1aU0frrLX5UFH-JoJ5bGvzl6xhj0-KDoV1kUjRww
  • google-site-verification=zyI2-nzBp88BYP9nAtglx_7OKiyqIOqrRyK9VIMLNWo

Email authentication weak

SPF
v=spf1 include:zoho.eu include:mail.zendesk.com ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

E8
from 2026-04-15 to 2026-07-14
Expires in 57 days

HTTP security headers

Header hygiene 55/100 Checked live page: https://userstack.com/

present
  • strict-transport-security
  • x-frame-options
findings
  • short HSTS max-age
  • missing Content Security Policy
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
Deny
strict-transport-security
max-age=0; includeSubDomains

Links to (9)

Linked from (2)