<![CDATA[localhost - Shodan Blog]]>https://blog.shodan.io/Ghost 0.7Thu, 09 Apr 2026 17:17:59 GMT60<![CDATA[The Country of Vietnam Resolves to Localhost]]>This is a bizarre case of the largest ISP in a country setting up their network in a way where every customer's IP resolves back to localhost.

There are other hosting providers in the country that didn't make that mistake, but out of the nearly 5 million banners in Shodan

]]>https://blog.shodan.io/the-country-of-vietnam-resolves-to-localhost/1b11cb99-d2ed-4a14-9721-f35148dcaadeWed, 18 Feb 2015 00:41:40 GMTThis is a bizarre case of the largest ISP in a country setting up their network in a way where every customer's IP resolves back to localhost.

There are other hosting providers in the country that didn't make that mistake, but out of the nearly 5 million banners in Shodan for Vietnam 1.5 million of them resolve to localhost.

https://www.shodan.io/report/89TE4tVV

To give you an idea of how uncommon this is, there are a total of 1,528,188 banners in Shodan that resolve to localhost - Vietnam makes up more than 95% of them:

It's unclear to me why they would chose to do this, so if anybody has any thoughts or insights please let me know.

Edit: This is the search that lead me to the discovery: https://www.shodan.io/search?query=hostname%3Alocalhost

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