SURBL Application

Application Information

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

Description

SURBLs are lists of web sites that have appeared in spam messages. Unlike most lists, SURBLs are not lists of message senders.

Category	Cybersecurity
Web Link	SURBL - Home Page

Network Intelligence

The network data shown here is also available via the Netify Data Feed API. We provide network intelligence to help deliver better digital experiences to end users and businesses.

Netify Data Feeds

SURBL - Domains

surbl.org is the primary domain associated with SURBL.

Core Networks

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

Network	PoP	Category	Location	IP	Shared
Cisco Secure Email	Core Network	Mail	United States	184.94.240.109

Other Networks

There are tens of thousands of Internet network providers and we make an effort to track as many as we can, but we have less coverage for niche and local providers. The following is a sample of SURBL IP addresses on this type of network.

ASN Description	ASN	Route	Location	IP	Shared
SURF	AS1103	145.100.0.0/15	Netherlands	145.100.188.22
National Technical Universi...	AS3323	147.102.0.0/16	Greece	147.102.222.241

Hosting

Cloud hosting vendors like AWS and Microsoft Azure provide cloud-based computing and network resources to deliver applications. The hosting platforms used by SURBL are summarized below by geographical points-of-presence (PoP). Each PoP can host many IPs to deliver an application.

Cloud Hosts	# of IPs
Hetzner	13
Cogent	1
OVHcloud	1

Host	PoP	Location	Sample IP	IPs
Cogent	Core	United States	38.124.232.194	1 IP
OVHcloud	Core	France	217.182.183.225	1 IP
Hetzner	Core	Germany	167.235.149.163	3 IPs
Hetzner	Core	United States	5.161.67.209	8 IPs
Hetzner	Helsinki	Finland	65.108.65.98	1 IP
Hetzner	Frankfurt	Germany	78.47.239.92	1 IP