On Apr 22, 2013, at 4:57 am, Anurag Bhatia <me at anuragbhatia dot com> wrote: > Hello everyone > > I was wondering if someone could explain the logic behind the range used by APNIC. > > > I see that ARIN, RIPE etc using entire range 0.0.0.0 to 255.255.255.255 > > while APNIC is using 255.0.0.0 - 255.255.255.255 > > > > I see IRINN has made some changes and now it says IANA broadcast but range is what we see in APNIC and as per whois on IRINN.in it suggests source to be APNIC. > > > Kindly correct me if I am wrong but 255.0.0.0 start seems to be of no meaning. Also, I do see strange results based on different queries. I agree that it seems quite odd. 255/8 is part of 240/4. In 240/4 the only address whose use has been defined is 255.255.255.255, which is used for limited broadcast. The rest of 255/8 does not (yet) have a defined use. You can find the details here: http://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xml Regards, Leo
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