Security Scan Report: substackcdn.com

Submitted: Nov 24, 2025, 8:04:47 PMCompleted: Nov 24, 2025, 8:08:44 PMpubliccompleted
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Summary

This website contacted 12 IPs in 1 country across 1 domain to perform 2 HTTP transactions. The main domain is substackcdn.com and was registered NaN years ago.

Submitted URL: https://substackcdn.com/

The Cisco Umbrella rank of the primary domain is #11,081 of the top 1 million websites

AI Security Verdict

Safe Website

Confidence: 96%

0
Risk Score

Legitimate Substack CDN error page with no security concerns.

Safety Factors
Well established domain
High Cisco Umbrella ranking
No malicious Indicators of Compromise
No credential or payment collection
Domain age information unavailable

Details

Bot Protection Detected

This website is protected by Cloudflare bot protection. Our scanner was challenged or blocked during access.

Page Title

Error - Substack

Scan Type

public

Language

🇺🇸

English

(55% confidence)

Category

documentation technical

(73%)

Domain Information

Within the commercial generic top-level domain (.com), 'substackcdn.com' is registered without a subdomain. The registrable portion 'substackcdn' spans 11 characters split between 2 vowels and nine consonants. It segments into 4 words: sub, stack, cd, n. Average segment length settles at 2.5 characters. No strong language cues emerged from the frequency lists.

Screenshot

Security scan screenshot of https://substackcdn.com/

Page Load Overview

0.28s
Total Load Time
2
HTTP Requests
1
Domains
11 KB
Total Size

Language Analysis

Primary Language

🇺🇸English
Code: en
Confidence:55%
Script:Latin
Direction:ltr

Detection Details

Language Code:en
Detection Confidence:55%
Script Type:Latin
Text Length:235 chars
Detector Agreement:100%

Website Classification

Primary Category

documentation technical73% confidence
Type: static
Method: ml+structural

All Detected Categories

documentation technical
73%
technology software
26%

Detected Features

No structural features detected

Domain & IP Information

RequestsIP AddressLocationAS Autonomous System
265.8.131.63United States
AS16509AMAZON-02
065.8.131.49United States
AS16509AMAZON-02
02600:9000:208a:5200:4:b4b9:d3c0:93a1United States
AS16509AMAZON-02
02600:9000:208a:5000:4:b4b9:d3c0:93a1United States
AS16509AMAZON-02
02600:9000:208a:fa00:4:b4b9:d3c0:93a1United States
AS16509AMAZON-02
065.8.131.71United States
AS16509AMAZON-02
02600:9000:208a:be00:4:b4b9:d3c0:93a1United States
AS16509AMAZON-02
02600:9000:208a:9000:4:b4b9:d3c0:93a1United States
AS16509AMAZON-02
02600:9000:208a:ec00:4:b4b9:d3c0:93a1United States
AS16509AMAZON-02
065.8.131.35United States
AS16509AMAZON-02
212--

Content Similarity HashesFor malware variant detection

TLSH (Trend Micro Locality Sensitive Hash)

Security-focused

Specialized for malware detection and similarity analysis

T111C16D1B8AB3130AE86549AC3F4931B60AC69D075212C429355EBB2C5F4ACD8DCA37CD

ssdeep (Context Triggered Piecewise Hashing)

Context-aware

Detects similar content even with modifications

96:8RJNu8PtoDaJXVV2GwVq+thSFR2lzchHMMqqu9/KiJkB8vmFqu0B9LO48yp7C3FC:8vNu8PtoDaJlV2Guq+t/lMsRHmF1M9yy

sdhash (Similarity Digest Hashing)

High-precision

High-precision similarity detection for forensic analysis

sdhash:3:5633:6RtjBcBQIiDFAhBGCMCQTCGhAIEYANgiQB4IICUBxIGgAEwBIxCCZAgAiYAACJoQjQASACAIINIDRgqIIUQAywEQjRDAIZmC

These hashes enable detection of similar websites and malware variants by comparing content similarity even when exact matches aren't found.

Image Hashes

Perceptual Hashes

Average Hash:ffe7e7ffffffffff
Perceptual Hash:e6663399cccc6c26
Difference Hash:080c0c0000000000
Wavelet Hash:3f27273f00000000
Color Hash:#ac9753

Other Hashes

Crop Resistant:080c0c0000000000

Scan History

Scan history not available

Unable to load historical scan data