IANA IPv4 allocations and bogon updates: 74/8, 75/8, 76/8, 189/8, 190/8


[ Apologies to those of you who receive this note in multiple forums. ]

Hi, all.

The numerous Team Cymru bogon projects have been updated as of 17 JUN 2005 to
reflect the following IANA allocation made on 17 JUN 2005:

  074/8 Jun 05 ARIN (whois.arin.net)
  075/8 Jun 05 ARIN (whois.arin.net)
  076/8 Jun 05 ARIN (whois.arin.net)

  189/8 Jun 05 LACNIC (whois.lacnic.net)
  190/8 Jun 05 LACNIC (whois.lacnic.net)

IANA allocations change over time, so please check regularly to ensure you have
the latest filters if you are not using the bogon BGP feed(s). We do announce
updates to the bogon projects to sundry lists, such as the bogon-announce list.
We can not stress this point strongly enough - these allocations change. If you
do not adjust your filters, you will be unable to access perhaps large portions
of the Internet. Worse yet, you may end up blocking access for people who
transit through you.

Please do not apply any filters or blocks to your network without carefully
considering the ramifications of doing so.

As a point of reference, the Team Cymru master Bogon Reference Page can be found


A quick summary of the documents and projects that have been updated include the

    The Bogon List
    - <http://www.cymru.com/Documents/bogon-list.html>
    The Text Bogon Lists
    - <http://www.cymru.com/Documents/bogon-bn-nonagg.txt>
    - <http://www.cymru.com/Documents/bogon-bn-agg.txt>
    Secure BIND Template
    - <http://www.cymru.com/Documents/secure-bind-template.html>
    Secure IOS Template (Cisco)
    - <http://www.cymru.com/Documents/secure-ios-template.html>
    Secure BGP Template (Cisco)
    - <http://www.cymru.com/Documents/secure-bgp-template.html>
    Secure JUNOS Template (Juniper)
    - <http://www.cymru.com/gillsr/documents/junos-template.htm>
    Secure JUNOS BGP Template (Juniper)
    - <http://www.cymru.com/gillsr/documents/junos-bgp-template.htm>
    Ingress Prefix Filter Templates, Loose and Strict (Cisco)
    - <ftp://ftp-eng.cisco.com/cons/isp/security/Ingress-Prefix-Filter-
    Ingress Prefix Filter Template, Loose (Juniper)
    - <http://www.cymru.com/gillsr/documents/junos-isp-prefix-filter-loose.htm>
    Ingress Prefix Filter Template, Strict (Juniper)
    - <http://www.cymru.com/gillsr/documents/junos-isp-prefix-filter-strict.htm>

    Bogon route-server for AUTOMATED updates of bogon filters
    - All bogon route-server peers have already received the
      appropriate BGP prefix updates.
    - <http://www.cymru.com/BGP/bogon-rs.html>

    - <http://www.cymru.com/Bogons/index.html#radb>

    - <http://www.cymru.com/Bogons/index.html#ripe>

    Bogon (bogons.cymru.com) zone
    - <http://www.cymru.com/Bogons/index.html#dns>

    Bogon prefix monitoring
    - <http://www.cymru.com/BGP/robbgp-bogon.html>
    Bogus ASN monitoring
    - <http://www.cymru.com/BGP/asnbogusrep.html>

Please feel free to contact Team Cymru <team-cymru@cymru.com> with any comments,
questions, or concerns.

Thank you for your continued support.
Rob, for Team Cymru.
- --
Rob Thomas
Shaving with Occam's razor since 1999.