pseudo-top-level domain
computer network that is not participating in the world-wide official Domain Name System
.bit
pseudo-top-level domain
.uucp
a pseudo-domain-style suffix used in the 1980s when identifying a hostname not connected directly to the Internet
.ip
suffix to indicate that the preceding string is an IP address
.local
special-use domain name
.root
database record of the root zone in the Domain Name System of the Internet
.onion
special use top-level domain for Tor hidden services