.top

.top. (TLD)

[1] Stop Using "internal" Top Level Domain Names - SANS Internet Storm Center ( (SANS Internet Storm Center著, 2017-09-27 12:59:12 +09:00)) <https://isc.sans.edu/forums/diary/Stop+Using+internal+Top+Level+Domain+Names/21095/>

- .top : From my own experience, this TLD is exclusively used for spam. Let me know if you find legitimate use of this gTLD