"The clear message for people who think they can use the internet to buy illegal drugs and get away with it is that they can't," she said.
"These sites are not top secret. Police can view them, and together with customs we can track packages down to addresses and individuals."
One person faces 13 charges for importing ecstasy, LSD and cannabis. Police have also charged a 22-year-old man in connection with the creation of site VicUnderworld, which police said is no longer operating.
In addition to New Zealand Police and Customs, Operation Hyperion was undertaken with Europol, Australian Federal Police, United States Immigration and Customs Homeland Security, the FBI and other international law enforcement agencies.
The dark web is an online black market that requires specific software, configurations or authorisation to access.
In April, an Illicit Drug Monitoring System study showed that encrypted websites were becoming increasingly popular among Kiwis who were looking to buy and sell drugs.