groups.l.google.com.

74.125.137.101
dy-in-f101.1e100.net
74.125.137.139
dy-in-f139.1e100.net
74.125.137.100
dy-in-f100.1e100.net
74.125.137.138
dy-in-f138.1e100.net
74.125.137.113
dy-in-f113.1e100.net
74.125.137.102
dy-in-f102.1e100.net

groups.l.google.com.
2607:f8b0:4023:c03::66
2607:f8b0:4023:c03::71
2607:f8b0:4023:c03::65
2607:f8b0:4023:c03::8a

alt1.gmr-smtp-in.l.google.com.
alt2.gmr-smtp-in.l.google.com.
alt3.gmr-smtp-in.l.google.com.
alt4.gmr-smtp-in.l.google.com.
gmr-smtp-in.l.google.com.
groups.l.google.com.