• inline network,
• knline network,
• lnline network,
• pnline network,
• 0nline network,
• 9nline network,
• obline network,
• omline network,
• ojline network,
• ohline network,
• onkine network,
• onpine network,
• onoine network,
• onlune network,
• onljne network,
• onlkne network,
• onlone network,
• onl9ne network,
• onl8ne network,
• onlibe network

The adjective form of "online network" is "online networking".

The plural form of the word "online network" is "online networks"

The singular form of the word "online network" is "online network". It remains the same in both singular and plural forms.