On Tuesday 2020-11-17 19:08, Philip Prindeville wrote: >>> Many known blocks owned by Chinanet for instance, don’t show up as /11 or /13 >>> networks, but as dozens of /23 networks instead in China, the US, Japan, and >>> Canada. Clearly not correct. > >183.128.0.0/11 is supposedly a single block of Chinanet, but the database >shows it as being 329 subnets (164 supposedly in the US), again mostly /23’s >and /22’s: >183.136.192.0,183.136.193.99,CN >183.136.193.100,183.136.193.255,US 100 is not "nicely divisible" along a bit boundary, that's already a giveaway that something is atypical. Maybe it's a set of VPN endpoints (into China) for external companies registered with MIIT/PSB or something. >212.174.0.0/15 supposedly is a single block of TurkTelecom, but the database >shows it as being 296 subnets, mostly /23’s. and to add icing, WHOIS has four entries for it. 212.174.0.0/17 212.174.128.0/17 212.175.0.0/17 212.175.128.0/17
