Challenge: Chilling Words

Difficulty: Hard (6.88/10), single problem
Social skills: None required
Motor skills: None required
Detective skills: Lateral thinking and good research-foo essential
Prize: An HB pencil
Closes: 2 days after first correct entry
Eligible: All members of ECS (except HDesk)

Inside the envelope was a small piece of paper with the following writing on it:

B+PLW (978) 184-7370815
5,6,4:6,4,5:5,5,4:6,12,10:6,16,2:7,26,5

What does it mean?