What should you check before renewing an IPv4 lease?

Renewing an IPv4 block should involve more than extending the contract date.

Before an IPv4 lease expires, it is worth reviewing utilization, BGP/IRR/RPKI status, LOA validity, rDNS and geolocation, IP reputation, abuse history, pricing, notice periods and termination terms.

We put together a practical IPv4 lease renewal checklist covering what network teams should verify before extending the same prefix for another term — and when replacing the block may make more sense.

Full guide:

https://interlir.com/2026/07/07/ipv4-lease-renewal-strategy-what-to-check-before-extending-a-block/