What powers ex-em.com?

Last seen Sep 2026 · 34 technologies across 14 categories

Analytics

Google Analytics
since Jul 2019
Naver Analytics
since Feb 2022
Vercel Analytics
since Jan 2026
Vercel Speed Insights v1.2.0
since Jan 2026

CDN

cdnjs
since Nov 2021
Cloudflare
since May 2022
jsDelivr
since Jul 2022

CMS

Tistory
since Oct 2023

Issue trackers

Sentry
since Mar 2020

JavaScript frameworks

GSAP
since Jan 2026
Next.js v15.5.9
since Jan 2026
Next.js App Router
since Jan 2026
React
since Jan 2026
Svelte
since Dec 2024

JavaScript graphics

MathJax v3.2.2
since Jul 2022

JavaScript libraries

core-js v3.6.4
since Sep 2021
Highlight.js
since May 2022
jQuery v1.12.4
since Jul 2019
Polyfill v3
since Jul 2022
Slick
since Oct 2020

Miscellaneous

Kakao v1.43.6
since Feb 2022
Open Graph
since Sep 2022
PWA
since Jan 2026
SWFObject
since Nov 2020
Webpack
since Jan 2026

PaaS

Amazon Web Services
since Aug 2022
Vercel
since Jan 2026

Performance

Priority Hints
since Jan 2026

Programming languages

Java
since Jan 2022
Node.js
since Jan 2026

Security

HSTS
since Nov 2022

Tag managers

Google Tag Manager
since Oct 2020

UI frameworks

Radix UI
since Jan 2026
Tailwind CSS
since Jan 2026

AI Crawlers

Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.

  • robots.txt found
  • llms.txt not found
  • ai.txt not found

See who blocks each AI crawler across the web

AI Crawlers

No AI crawlers blocked

Full breakdown

Audience

  • 100% desktop
  • South Korea

Where the site's Chrome visitors come from, largest estimated audience first.

Open Page Rank

3.29 / 10 · ranked #1,136,759 of all domains

45 referring domains · OpenPageRank

Core Web Vitals

LCP1.9 s
INP250 ms
CLS0.2
TTFB100 ms

Real user p75, Chrome UX Report, Sep 2026.

Page

  • Language: English
  • CDN: Vercel
  • Weight: 28.8 MB · 63 requests
  • Structured data: JSON-LD, OpenGraph, Twitter Cards

Homepage as crawled by the HTTP Archive, Sep 2026.

Organisation

From the homepage's own structured data (Sep 2026).

Infrastructure

  • Hosted on Amazon Web Services (216.150.1.1)
  • DNS: Amazon Route 53
  • Email: no MX record returned, SPF names Google Workspace
  • Email security: SPF (soft fail), DMARC monitor only
  • SSL: Let's Encrypt, RSA 2048, expires Nov 2026
  • Common Crawl link graph: rank 1,886,260, 9 hosts
  • Verified with: Google, Microsoft 365

DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted

Subdomains

HostTechs
ex-em.com 20
blog.ex-em.com 18
m.ex-em.com 7

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