Substack
Substack Application
The following page provides details on domains, networks, IPs, hosting services, and content delivery networks used by Substack.
Description
Substack is an online platform that allows writers, journalists, and creators to publish and monetize newsletters and other content.
| Category | Business |
| Web Link | Substack - Home Page |
Application Domains
The application domains data shown here is available in our Netify Data Feeds solution. The data is accessible via our IP API as well as downloadable datasets.
Domains
Primary Domains
Primary Domains are owned and managed by the application vendor.
Platform Domains are often provided by hosting providers, content delivery networks, SaaS platforms and other third parties. It is important to identify these domains for DNS filters and hostname blocklists.Platform Domains
 Amazon AWS
|
{hidden}.us-east-1.elb.amazonaws.com | |
 Statuspage
|
{hidden}.statuspage.io |
SaaS - Software-as-a-Service
Applications often use various third party platforms for providing authentication, advertising, cybersecurity, e-mail services and more. The Software-as-a-Service (SaaS) platforms used by Substack are summarized below.
| Service | Category | Sample IP | IP Count |
|---|---|---|---|
Mailgun
|
34.102.239.211 | 2 IPs | |
Zendesk
|
Business | 216.198.53.11 | 2 IPs |
Hosting
Cloud hosting vendors like AWS and Microsoft Azure provide cloud-based computing and network resources to deliver applications. The hosting platforms used by Substack are summarized here.
| Cloud Hosts | # of IPs |
|---|---|
|
Amazon AWS
|
23 |
Content Delivery Networks - CDNs
In order to get information to end users more quickly, many applications are distributed from multiple geographical points-of-presence (PoPs) using Content Delivery Networks (CDNs). Each PoP can host many IPs to deliver an application. A sample IP is provided.
Take special note of CDNs that use Anycast technology. Anycast makes it possible to route a single IP address to a variety of different geographic locations. In other words, one global Anycast IP is hosted in multiple geographic locations.
| CDNs | # of IPs |
|---|---|
Amazon CloudFront
|
8316 |
Cloudflare
|
5 |
Anycast
| CDN | Network | Location | Sample IP | IPs |
|---|---|---|---|---|
|
Cloudflare
|
Cloudflare
|
Global | 104.18.37.200 | 4 IPs |
PoP Locations
Other Locations
| CDN | Network | PoP | Location | IPs |
|---|---|---|---|---|
|
Cloudflare
|
Cloudflare
|
Core Network | United States | 1 IP |
|
Amazon CloudFront
|
Amazon CloudFront
|
Core Network | United States | 139 IPs |
|
Amazon CloudFront
|
Amazon CloudFront
|
Core Network | Italy | 8 IPs |
Netify Resources
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