Значит зафильтровано выше. Может когда шла атака на апстриме просто прикрыли (в null route) ваш IP ?
Нужно обратиться к Вашему провайдеру

))
IP Address. . . . . . . . . . . . : 89.178.49.161
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . : 89.178.49.161
Tracing route to hostobzor.ru [83.97.111.92]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms vpn7-l0.msk.corbina.net [85.21.0.7]
2 <1 ms <1 ms <1 ms izm-bb-giga1-6.msk.corbina.net [85.21.17.12]
3 <1 ms <1 ms <1 ms ko-bb-teng12-2.msk.corbina.net [195.14.54.117]
4 * * * Request timed out.
5 * * * Request timed out.
6 1 ms 1 ms 1 ms pavlov27-me1-vlan90.msk.corbina.net [195.14.61.1
02]
7 2 ms 1 ms 1 ms net310-gw.corbina.net [195.14.59.38]
8 * * * Request timed out.
9 * * * Request timed out.
10 * * * Request timed out.
11 * * * Request timed out.
12 * *
C:\>tracert ht-systems.ru
Tracing route to ht-systems.ru [83.97.109.10]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms vpn7-l0.msk.corbina.net [85.21.0.7]
2 <1 ms <1 ms <1 ms izm-bb-giga1-6.msk.corbina.net [85.21.17.12]
3 1 ms <1 ms <1 ms ko-bb-teng12-2.msk.corbina.net [195.14.54.117]
4 * * * Request timed out.
5 * * * Request timed out.
6 1 ms 1 ms 1 ms pavlov27-me1-vlan90.msk.corbina.net [195.14.61.1
02]
7 1 ms 1 ms 1 ms net310-gw.corbina.net [195.14.59.38]
8 2 ms 1 ms 1 ms c6-w.ht-systems.ru [83.97.109.10]