3 Apr
2011
3 Apr
'11
1:01 p.m.
Andy Grawehr writes:
when i check our prefix 193.105.5.0/24 on www.ris.ripe.net i get an overlapping prefix: 192.0.0.0/3 announced by AS3303.
Google "AS3303 semi-default". AS3303 announces this /3 to their customers and possibly use it internally. It's part of an elaborate mechanism to trade off routing table size against path quality.
Some ISPs (including ourselves) even announce 0.0.0.0/0 to customers. Note how this also "overlaps" with your 193.105.5.0/24.
Best regards,
--
Simon.