China Telecom filtering nameservers

[Daniel Medina <medina () columbia edu>]

 Our main nameservers are being filtered from networks managed by

        CHINANET, Data Communications Division, 
        China Telecom

All traffic from our nameservers (ICMP, DNS queries, etc) is being
dropped.  As a result, many websites and mail servers with DNS hosted on
networks which connect via China Telecom are inaccessible to users from
our network.  Only the IP addresses of our main nameservers are
filtered.

 I have contacted China Telecom at

        hostmaster () ns chinanet cn net
        noc () cn net

about this problem, but have received no response.

 Does anyone know of any good contacts at China Telecom, or know if 
there's some explanation for this?

-- 
Daniel Medina
Columbia University