Reporting open port when using a non existing domain

[0ca]

This reports an open port for the non existent domain:

import NetMap from 'netmap.js'

const netmap = new NetMap()
const hosts = ['nonexistentdomain.com']
const ports = [80]

netmap.tcpScan(hosts, ports).then(results => {
  console.log(results)
})

I guess the DNS failure makes the delta to be similar to an open port.

[serain]

Interesting. What browser/OS are you using?

Happy to look into any improvements to the accuracy or consider any ideas to catch this case.

[0ca]

I'm using Chrome 70 on MacOs Mojave.