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lettersofnote.com

lettersofnote.com ranks in the top 0.31% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 4 distinct hosts observed under it.

Explore lettersofnote.com in the Web Graph

Connectivity

#407,454harmonic-centrality rank
Top percentile
0.31%
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://lettersofnote.com/ answered with HTTP 200.

DNS records

A
  • 199.16.173.211
  • 199.16.172.26
AAAA
No records found.
MX
  • 1 aspmx.l.google.com.
  • 5 alt1.aspmx.l.google.com.
  • 5 alt2.aspmx.l.google.com.
  • 10 aspmx2.googlemail.com.
  • 10 aspmx3.googlemail.com.
NS
  • dns1.registrar-servers.com.
  • dns2.registrar-servers.com.

Live preview

Screenshot of lettersofnote.com

This site's Content-Security-Policy restricts embedding to specific origins ("frame-ancestors 'self' https://*.substack.com https://substack.com"), which does not include StatsMyWeb.

Since lettersofnote.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)

Registrar
NameCheap, Inc.
Registered
2009-09-07
Expires
2027-09-07
Last changed
2026-08-08

Nameservers: DNS1.REGISTRAR-SERVERS.COM, DNS2.REGISTRAR-SERVERS.COM

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
no-cache
Content-Encoding
Not sent

Security

Content-Security-Policy
frame-ancestors 'self' https://*.substack.com https://substack.com
Strict-Transport-Security
max-age=31536000; includeSubDomains; preload
X-Frame-Options
Not sent
X-Content-Type-Options
Not sent
Referrer-Policy
Not sent
Permissions-Policy
Not sent

What each security header does

Redirect chain

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

    → https://lettersofnote.com/

  2. 2.https://lettersofnote.com/HTTP 302

    → https://news.lettersofnote.com/

  3. 3.https://news.lettersofnote.com/HTTP 200

Meta tags

Title
Letters of Note | Shaun Usher | Substack
Description
Nothing but history's most interesting letters. Click to read Letters of Note, by Shaun Usher, a Substack publication.
Canonical
https://news.lettersofnote.com/
Robots
Not set
Generator
Not set
Open Graph title
Letters of Note | Shaun Usher | Substack
Open Graph description
Nothing but history's most interesting letters. Click to read Letters of Note, by Shaun Usher, a Substack publication.
Open Graph image
https://substackcdn.com/image/fetch/$s_!1UAz!,w_400,h_400,c_fill,f_auto,q_auto:good,fl_progressive:steep,g_auto/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6f08c121-b0ba-454e-bae3-61c44be6926d_306x306.png
Open Graph type
article
Twitter card
summary
Twitter title
Letters of Note | Shaun Usher | Substack
Twitter image
https://substackcdn.com/image/fetch/$s_!1UAz!,w_400,h_400,c_fill,f_auto,q_auto:good,fl_progressive:steep,g_auto/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6f08c121-b0ba-454e-bae3-61c44be6926d_306x306.png

robots.txt

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

No Sitemap declared in robots.txt.

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • Expressframework

    X-Powered-By: Express

  • Cloudflare Web Analyticsanalytics

    Found "static.cloudflareinsights.com" in the page's HTML

  • Cloudflare Bot Managementcdn

    Cookie set: __cf_bm

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