A routing number is a bank identifier. It's not attached to a single account, only to a bank.
The monitor on the fictional website Wanted DEAD not ALIVE at the FBI Postal Office secret base shows the Bitcoin Exchange rate for the Death of Elizabeth Keen BTC 2641.98 or US$ 700,390. As of 9/8/2016 several webpages show this exchange rate for bitcoin to u.s. currency to be inaccurate. It is closer to $1,661,673.32 in u.s. dollars.
Red is excited to see a .416 Rigby Mauser and pulls it off the wall. He opens the bolt to see that it is "fully loaded, no less!" Mausers that use a 5- round strip clip can not close with an empty chamber, and Red would have ejected a round. You can feed 4 bullets through the bottom if you want an empty chamber, as some hunters are known to do and some modern .416 Rigby Mausers are designed to be loaded, but then Red wouldn't have considered this "Fully Loaded".
The title character is identified as being number 50 on the Blacklist. But he or she is only identified during the episode and had not done anything other than upload Elizabeth Keen's name to the DeadNotAlive website. So could not have been on the Blacklist.
Gavin asks, sarcastically, "You'll what? Hit me with a denial of service attack?" to which Aram responds, "Actually, I was thinking more like millions of repetitive requests." This is exactly what a denial of service attack is.
While being interrogated, Gavin Delgado states that he can't take down Agent Keen's bounty from his site; and that Agent Navabi should "go try a layer four UDP/TCP of the OSI stack". This is nonsensical as TCP and UDP are protocols, not an action you can try; layer four is "transport" in the OSI model, so there is once again nothing to try as it is not an action, and the OSI model (or "stack" as the character called it) is a set of 7 layers that comprise the stages in communication on a network without regard to any particular protocol or technologies.
At the end of the episode, when Tom is leaving a message for Elizabeth, he is holding the phone backwards with the screen out.