An addr-spec is a specific Internet identifier that contains a
locally interpreted string followed by the at-sign character ("@",
ASCII value 64) followed by an Internet domain. The locally
interpreted string is either a quoted-string or a dot-atom. If the
string can be represented as a dot-atom (that is, it contains no
characters other than atext characters or "." surrounded by atext
characters), then the dot-atom form SHOULD be used and the quoted-
string form SHOULD NOT be used. Comments and folding white space
SHOULD NOT be used around the "@" in the addr-spec.

Amid all the conversation about Signal, and the debate over decentralization, one thing has often not been raised: all of these things require an Internet connection.

“Of course,” you might say. “Internet is everywhere these days.” Well, not so much, and it turns out there are some very good reasons that people might want messengers that work offline. Here are some examples:

• Internet-using messengers leak certain metadata (eg, that a person is using it, or perhaps a sophisticated adversary could use timing analysis to determine that two people are talking using it)
• Cell signal outages due to natural disaster, large influx of people (protests, unusual sporting events, festivals, etc), or other factors
• Locations where cell signals are not available (rural areas, camping locations, wilderness areas, etc.)
• Devices that don’t have cell data capability (many tablets, phones that have had service expire, etc.)

The Internet Hall of Fame is an honorary lifetime achievement award administered by the Internet Society (ISOC) in recognition of individuals who have made significant contributions to the development and advancement of the Internet.[

The Internet Systems Consortium (ISC) offers a free version of its DHCP and DHCPv6 reference implementation. The following configuration settings are available with the ISC DHCP server, which are configured in the server's dhcpd.conf file.

Tahoe-LAFS is a Free and Open decentralized cloud storage system. It distributes your data across multiple servers. Even if some of the servers fail or are taken over by an attacker, the entire file store continues to function correctly, preserving your privacy and security.

RIPEstat is a web-based interface that provides everything you ever wanted to know about IP address space, Autonomous System Numbers (ASNs), and related information for hostnames and countries in one place.