PSBL Application

The following page provides details on domains, networks, IPs, hosting services, and content delivery networks used by PSBL.

Description

Passive Spam Block List (PSBL) is an easy-on, easy-off blacklist that does not rely on testing and should reduce false positives because any user can remove their ISP's mail server from the list.

Full Name	Passive Spam Block List
Category	Cybersecurity
Web Link	PSBL - 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.

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PSBL - Domains

surriel.com and psbl.org are the primary domains associated with PSBL.

Core Networks

Applications are sometimes deployed on partner networks, parent company networks, or regional hosting providers. The following is a sample of PSBL IP addresses deployed on this type of network.

Network	PoP	Category	Location	Route
Xfinity	Core Network	ISP/Telco	United States	2601::/20
Xfinity	Core Network	ISP/Telco	United States	2601::/20
Xfinity	Core Network	ISP/Telco	United States	96.64.0.0/11

Hosting

Cloud hosting vendors like AWS and Microsoft Azure provide cloud-based computing and network resources to deliver applications. The hosting platforms used by PSBL are summarized here.