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Domain report

bttp.info

bttp.info ranks in the top 7.64% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 2 distinct hosts observed under it.

Explore bttp.info in the Web Graph

Connectivity

#10,182,855harmonic-centrality rank
Top percentile
7.64%
Hosts observed
2

From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means

HTTPS reachability

200HTTP status

https://bttp.info/ answered with HTTP 200.

DNS records

A
  • 183.90.237.149
AAAA
No records found.
MX
  • 0 bttp.info.
NS
  • ns3.xserver.jp.
  • ns2.xserver.jp.
  • ns4.xserver.jp.
  • ns5.xserver.jp.
  • ns1.xserver.jp.
AS
Server in network Xserver Inc., AS131965 · Japan183.90.237.0/24, which holds 183.90.237.149

Live preview

This is a live, sandboxed embed of bttp.info — not a copy. What it shows can change any time the site itself does.

Domain registration (WHOIS / RDAP)

Registrar
XServer, Inc.
Registered
2017-03-03
Expires
2027-03-03
Last changed
2026-08-12

Nameservers: ns1.xserver.jp, ns4.xserver.jp, ns3.xserver.jp, ns2.xserver.jp, ns5.xserver.jp

Status: client transfer prohibited

How to read WHOIS and RDAP data

SSL certificate

Certificate Transparency lookup failed (HTTP 429).

How to check when a certificate expires

HTTP & security headers

Response

Server
cloudflare
Content-Type
text/html; charset=UTF-8
Cache-Control
Not sent
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
Not sent
X-Frame-Options
Not sent
X-Content-Type-Options
Not sent
Referrer-Policy
Not sent
Permissions-Policy
private-state-token-redemption=(self "https://www.google.com" "https://www.gstatic.com" "https://recaptcha.net" "https://challenges.cloudflare.com" "https://hcaptcha.com"), private-state-token-issuance=(self "https://www.google.com" "https://www.gstatic.com" "https://recaptcha.net" "https://challenges.cloudflare.com" "https://hcaptcha.com")

What each security header does

Redirect chain

  1. 1.http://bttp.info/HTTP 301

    → https://bttp.info/

  2. 2.https://bttp.info/HTTP 200

Meta tags

Title
Back to the past | 時空の不思議現象の考察
Description
夢を使ったお手軽なタイムリープから量子論や相対性理論を使った本格的なタイムマシンまで、「タイムトラベル」を中心に不思議な話を考察しています。
Canonical
https://bttp.info/
Robots
max-image-preview:large
Generator
Not set
Open Graph title
Back to the past | 時空の不思議現象の考察
Open Graph description
夢を使ったお手軽なタイムリープから量子論や相対性理論を使った本格的なタイムマシンまで、「タイムトラベル」を中心に不思議な話を考察しています。
Open Graph image
http://bttp.info/wp-content/uploads/2024/01/cropped-BTTP-square.jpg
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Not set
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
1
Disallow rules (other agents)
0

Sitemap declared:

  • https://bttp.info/sitemap.xml

Technology detected

Best-effort, based on a small set of well-known signals — this may be incomplete.

  • Cloudflarecdn

    Server: cloudflare

  • WordPresscms

    Found "wp-content/" in the page's HTML

  • Google Analyticsanalytics

    Found "googletagmanager.com/gtag/js" in the page's HTML

Related domains

Similar connectivity

Domains ranked just above and below it in the same snapshot.