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English thesaurus
sub-network mask
abbr., progr.	sub net mask (ssn); sub-net mask (ssn); subnet mask (ssn); sub network mask (ssn); subnetwork mask (ssn)
sub network mask
abbr., progr.	sub net mask (ssn); subnet mask (ssn); sub-net mask (ssn); sub-network mask (ssn)

sub-network : 7 phrases in 3 subjects

Communications	4
Name of organization	2
United Nations	1