3 ms·

This is 2.5% of the total adress space - not usable, total. It's about the equivalent of 6.25 class A (/8) prefixes. Quite impressive.

• est31 6y ago
  Nothing compared to the US federal government. I count 13 /8 blocks for the DoD, and one for the USPS, so 14 in total. https://en.wikipedia.org/wiki/List_of_assigned_/8_IPv4_address_blocks https://en.wikipedia.org/wiki/List_of_assigned_/8_IPv4_addre...
  • deleted 6y ago
    [deleted]
  • divbzero 6y ago
    The original list of assigned blocks [1] is a fascinating glimpse of history. Some of the Class A networks are still recognizable (MIT, University College London, Stanford) while others have faded in prominence (BBN, CISL, DEC, MITRE, Tymnet). The same 1981 document also contains a list of assigned ports which of course does not include DNS, HTTP(S), IMAP, POP, or SSH. [1]: https://tools.ietf.org/html/rfc790 https://tools.ietf.org/html/rfc790 "RFC 790"
    • kseifried 6y ago
      MITRE is a non profit that "manages federally funded research and development centers (FFRDCs) supporting several U.S. government agencies" they have a technology and cyber security mandate which is still big (they run CVE, CWE, SCAP, etc.). They haven't faded so much as they were never a public/network company in the first place.
• phkahler 6y ago
  I dont think that's impressive. I think it means something is wrong with governance.
  • lukeramsden 6y ago
    Why's that? They run an incredibly significant amount of internet infrastructure, is it not also natural for them to own a lot of IP addresses to go with that?
  • bawolff 6y ago
    That seems pretty ignorant of the history involved.