Have found that Spamhaus has listed the entire IP range as suspected Snowshoe Spam.

https://check.spamhaus.org/results?query=162.216.242.97

Spammer-infested network, this is not a safe area to accept email from.

NetRange: 162.216.240.0 - 162.216.243.255
CIDR: 162.216.240.0/22
NetName: DYNU
NetHandle: NET-162-216-240-0-1
Parent: NET162 (NET-162-0-0-0-0)
NetType: Direct Allocation
OriginAS:
Organization: Dynu Systems Incorporated (DS-589)
RegDate: 2019-01-11
Updated: 2025-11-05
Comment: Geofeed https://api.dynu.com/nic/geofeed
Ref: https://rdap.arin.net/registry/ip/162.216.240.0


OrgName: Dynu Systems Incorporated
OrgId: DS-589
Address: 1351 West Bartlett Way
City: Chandler
StateProv: AZ
PostalCode: 85248
Country: US
RegDate: 2016-09-28
Updated: 2024-11-25
Comment: http://www.dynu.com
Comment: Standard NOC hours are 7:00 AM to 11:00 PM EST
Ref: https://rdap.arin.net/registry/entity/DS-589