Mailservers with A-records configured on private IPv4 ranges (RFC 1918)
10.0.0.0 - 10.255.255.255 range:
2843 Mailservers found
172.16.0.0 - 172.31.255.255 range:
1647 Mailservers found
192.168.0.0 - 192.168.255.255 range:
3246 Mailservers found
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