How fast are landline phone numbers recycled/reused/reassigned?

Question

Anybody have a credible link to verify your answer?

Answer 1

60 tp 90 days......it really should be 1 or 2 years....!

Answer 2

Reverse Phone Number Look Up Services

Answer 3

Companies like CallCentric hold numbers for 30 days before redistributing a previously used number. I suspect this may be an unwritten rule.

However, in cases like SkypeIn, they hold previously used numbers 90 days to give customers a opportunity to re-purchase the same number back, should they reconsider their DID number termination.