> At about 06:30 UTC the following morning, the DDoS escalated and broadened its targets to include other parts of our PHL subnet. In response, our colocation provider null routed our subnet once again. This subnet has been unreachable ever since.
There's also the question of whether the DDOS is still even trying the old infrastructure. The post says it's unreachable, but that would be true if the null route hadn't been removed yet.