Bogons via HTTP

Be sure to check out the main Bogon Reference for more information on the project and terminology used, and why it is important to keep your bogon filters up-to-date.

We provide several HTTP-based resources for tracking bogon allocations:

HTML Formatted

The Bogon Dotted Decimal List
This is the list of bogons in dotted decimal and reversed-netmask Cisco ACL formats, both aggregated and unaggregated.
The Bogon Bit Notation List
This is the list of bogons in bit notation and Juniper prefix-list formats, both aggregated and unaggregated.

Plain Text

Suitable for scripted wget and parse activities. Please do not fetch more often than the listed update interval, for the lists that are updated only as IANA allocations change, please do not fetch more than once per day.

The Text Bogon List, Unaggregated
This is the list of bit notation bogons, unaggregated, in text format.
Updated as IANA allocations and special prefix reservations are made.
The Text Bogon List, Aggregated
This is the list of bit notation bogons, aggregated, in text format.
Updated as IANA allocations and special prefix reservations are made.
IPv4 Fullbogons
The traditional bogon prefixes, plus prefixes that have been allocated to RIRs but not yet assigned by those RIRs to ISPs, end-users, etc.
Updated every four hours.
IPv6 Fullbogons
IPv6 "fullbogons", all IPv6 prefixes that have not been allocated to RIRs and that have not been assigned by RIRs to ISPs, end-users, etc.
Updated every four hours.