serenebach.net

.net crawl

First seen 2026-05-14 · Last seen 2026-05-19 · ok HTTP/1.1 200 3896 ms crawled 2026-05-19

US · 104.21.79.200 · AS13335 Cloudflare, Inc.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title

sb開発研究所

Feeds

RSS RSS
Atom Atom

Technology

CDN: Cloudflare

Analytics

Cloudflare Insights

Third-party hosts loaded (2)

serendipitynz.com×4
static.cloudflareinsights.com×1

Social

Contact

Address: Copyright © 2006 SimpleBoxes /SerendipityNZ Ltd. All rights reserved.

Registration

Registrar

Japan Registry Services Co., Ltd.

Created

2006-07-21

Expires

2026-07-21 61 days left

Updated

2026-05-03

Name servers

grannbo.ns.cloudflare.com
marek.ns.cloudflare.com

DNS records live

NS

grannbo.ns.cloudflare.com
marek.ns.cloudflare.com

MX

10 _dc-mx.156fdd892f1d.serenebach.net

Email authentication partial

SPF: v=spf1 a:www1177.sakura.ne.jp mx ~all
softfail (~all)
DMARC: v=DMARC1; p=none; aspf=r; adkim=r; rua=mailto:takuya.otani@serenebach.net
policy: none (monitoring only)
DKIM: no key found at common selectors

Certificate (current)

from 2026-05-03 to 2026-08-01

Expires in 73 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://serenebach.net/

findings

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