indexo.dev

jser.info

.info crawl

First seen 2026-05-09 · Last seen 2026-05-15 · ok HTTP/1.1 200 1438 ms crawled 2026-05-15

US · 104.21.88.100 · AS13335 Cloudflare, Inc.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
JSer.info
Description
JavaScriptの最新情報を紹介する週刊ブログ
Language
ja
Canonical
https://jser.info/
Feeds

Open Graph

url
https://jser.info/
title
JSer.info
site name
JSer.info
description
JavaScriptの最新情報を紹介する週刊ブログ

Technology

CDN
Cloudflare
Analytics
  • Google Tag Manager

Third-party hosts loaded (6)

  • mstdn.jp×2
  • twitter.com×2
  • github.com×1
  • i.creativecommons.org×1
  • s3.feedly.com×1
  • www.googletagmanager.com×1

Social

Registration

Registrar
Cloudflare, Inc
Created
2010-12-27
Expires
2032-12-27 2413 days left
Updated
2024-01-11
Name servers
  • jessica.ns.cloudflare.com
  • dane.ns.cloudflare.com

DNS records live

NS
  • dane.ns.cloudflare.com
  • jessica.ns.cloudflare.com
MX
  • 28 route3.mx.cloudflare.net
  • 41 route1.mx.cloudflare.net
  • 60 route2.mx.cloudflare.net

Email authentication partial

SPF
v=spf1 include:_spf.mx.cloudflare.net ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:294c801d2c0d41acb211be6fe61b810c@dmarc-reports.cloudflare.net
policy: none (monitoring only)
DKIM
  • k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…
selectors probed

Certificate (current)

WE1
from 2026-04-25 to 2026-07-24
Expires in 65 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://jser.info/

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

Links to (5)

Linked from (1)