mathlog.info

.info crawl

First seen 2026-05-12 · Last seen 2026-05-18 · ok HTTP/1.1 200 948 ms crawled 2026-05-18

US · 216.150.16.1 · AS16509 Amazon.com, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title: 数学特化の情報共有サービス | Mathlog
Description: Mathlogは数学の学びを自由に記録・共有できるWebサービスです。学びの記録や閲覧による学習はもちろん、数学に興味を持つ人々との議論や問題解決を通じた交流もできます。
Language: ja
Canonical: https://mathlog.info/

Open Graph

url: https://mathlog.info/
title: 数学特化の情報共有サービス
site name: Mathlog
description: Mathlogは数学の学びを自由に記録・共有できるWebサービスです。学びの記録や閲覧による学習はもちろん、数学に興味を持つ人々との議論や問題解決を通じた交流もできます。

Technology

CDN: Vercel
CMS: Next.js

Ads

Google AdSense

Third-party hosts loaded (3)

firebasestorage.googleapis.com×48
pbs.twimg.com×2
pagead2.googlesyndication.com×1

Registration

Registrar

Japan Registry Services Co, Ltd

Created

2020-02-17

Expires

2027-02-17 272 days left

Updated

2026-03-12

Name servers

ns1.vercel-dns.com
ns2.vercel-dns.com

DNS records live

NS

ns1.vercel-dns.com
ns2.vercel-dns.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

Verified for

Google

Email authentication weak

SPF

not published

DMARC

v=DMARC1; p=none;

policy: none (monitoring only)

DKIM

s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAypSAf4ViD1cxomjsb+sFwvOwHnvRNp9LR8xqsf9u1gZeeXJNSiEt48gjhyAhG99EbnizlDTLmLsp7t4+B8…
s2: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzdVxvcJ4bB1CY5t5sF61u5eZe5rHnaqedv+oZeNU2KUKCs7Ggl1/vs5A0iWyKtJKHKLEoYhPPys/QHWkrL…

selectors probed

Certificate (current)

R12

from 2026-05-12 to 2026-08-10

Expires in 82 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://mathlog.info/

present

strict-transport-security

findings

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

Header values

strict-transport-security: max-age=63072000