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Domain report

peerj.com

peerj.com ranks in the top 0.00053% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 4 distinct hosts observed under it.

Explore peerj.com in the Web Graph

Connectivity

#710harmonic-centrality rank
Top percentile
0.00053%
Hosts observed
4

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://peerj.com/ answered with HTTP 200.

DNS records

A
  • 104.18.39.203
  • 172.64.148.53
AAAA
  • 2606:4700:4408::ac40:9435
  • 2606:4700:440b::6812:27cb
MX
  • 10 us-smtp-inbound-1.mimecast.com.
  • 20 us-smtp-inbound-2.mimecast.com.
NS
  • daisy.ns.cloudflare.com.
  • logan.ns.cloudflare.com.

Live preview

Screenshot of peerj.com

This site sends "X-Frame-Options: SAMEORIGIN", which blocks embedding it here.

Since peerj.com can't be embedded live, this is a captured screenshot instead — a snapshot from whenever it was last rendered, not necessarily this exact moment.

Domain registration (WHOIS / RDAP)

RDAP lookup failed (HTTP 429).

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
max-age=0, must-revalidate, proxy-revalidate, public, s-maxage=600
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
max-age=2592000
X-Frame-Options
SAMEORIGIN
X-Content-Type-Options
nosniff
Referrer-Policy
Not sent
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://peerj.com/HTTP 301

    → https://peerj.com/

  2. 2.https://peerj.com/HTTP 200

Meta tags

Title
PeerJ - Peer-Reviewed Open Access Journals, Trusted by Researchers
Description
Trusted by researchers, committed to open. PeerJ delivers open-access publishing with transparent peer review across two STM and computer science journals.
Canonical
Not set
Robots
Not set
Generator
Not set
Open Graph title
Not set
Open Graph description
Not set
Open Graph image
Not set
Open Graph type
Not set
Twitter card
Not set
Twitter title
Not set
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
3
Disallow rules (other agents)
2

Sitemap declared:

  • https://peerj.com/sitemap_index.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • Google Tag Manageranalytics

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

  • Cloudflare Bot Managementcdn

    Cookie set: __cf_bm

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