Expired domains will be held for a grace period defined by the domain registry. For .com, .net, and .org the grace period is 40 days. For .ca domains the grace period is 30 days. During the grace period all associated services will cease working until the name is renewed. As well, name server/DNS changes will not be possible.
If the domain is not renewed within the grace period, it falls into what is known as the redemption period. The Redemption Period provides the owner with one last chance to recover the domain before it's deleted and potentially re-registered by a new owner.
The Redemption process is costly, $80 US plus the regular registration fees. We must process this manually, so please contact us. It takes up to 48 hours for the site to be live again, and no changes can be made to the WHOIS information during this time.
If you do not want to pay the additional fees for the redmption period, there is always the option of waiting out the entire grace period, which would be approximately 40 (Post Expiry Grace period) + 30 (Redemption Period) + 6 (Pending Delete period) = 75 days.