Broken nameservers for Sprint IPv6

[Bernhard Schmidt]

Hello,

could any Sprint IPv6 (or systems or whatever) guy please give their 
nameservers a short kick? Both servers listed for the reverse mapping of 
2001:440::/32 are unavailable, which makes traces going through Sprint 
sort of inconvenient.

0.4.4.0.1.0.0.2.ip6.arpa. 10800 IN      NS      ns1.slug.net.
0.4.4.0.1.0.0.2.ip6.arpa. 10800 IN      NS      ns1.sprintv6.net.

Traceroutes end with

ns1.slug.net:
  7  so4-0-0-2488M.ar2.FRA2.gblx.net (67.17.65.78)  12 ms  12 ms  11 ms
  8  213.206.131.65 (213.206.131.65)  12 ms  12 ms  12 ms
  9  sl-bb21-par-4-0.sprintlink.net (213.206.129.149)  21 ms  21 ms  21 ms
10  * * *

ns1.sprintv6.net
10  sl-bb24-nyc-9-0.sprintlink.net (144.232.9.166)  96 ms  96 ms  97 ms
11  sl-bb24-nyc-0-0-0.sprintlink.net (144.232.20.121)  109 ms  109 ms 
109 ms
12  * * *

  7  2001:440:eeee:ffc8::2  177.824 ms
  8  2001:440:eeee:ffc8::1  252.444 ms
  9  *

Thanks a lot,
Bernhard