Online TCP Port Scanner

Hello network!

We are looking for an online TCP Port scanning tool with mail reporting.

We want to schedule a TCP port scanning on 5 public /24 subnets each week.

Bonus if it can compare results week by week.

We used to have a ansible script and Python script, but we used too much time tweaking it.
We'd rather use a third-party tool.

We are not looking for super advanced tools, just port scanning for a cheap price.
Thanks in advance!