# Protocol.com > Protocol.com is an elite-level .com domain. It is owned by Coherence.com and may be in development. ## Key facts - Domain: protocol.com (one English word, "protocol", eight letters, .com; no numerals, no hyphen) - Owner: Coherence.com — https://coherence.com - Status: may be in development - Contact: team@coherence.com (subject: "Domain name: protocol.com") - Price or sale terms: not published ## Meaning A protocol is an established set of rules for how something is done. In diplomacy, it is the rules of etiquette and precedence for state and diplomatic occasions. In treaties, it is an agreement that amends or supplements a treaty or international convention, such as the Kyoto Protocol. In science and medicine, it is the written plan for an experiment, a clinical trial or a course of treatment. In computing, it is the rules that let devices exchange data, such as TCP/IP and HTTP. The word comes from the Greek prōtokollon, the first sheet glued to a papyrus roll, describing its contents. ## Suitable industries Cybersecurity, networking and telecoms, blockchain and crypto, AI and agents, software and APIs, healthcare and clinical research, fintech and payments, legal and compliance, diplomacy and government, events and hospitality, IoT and smart devices, and research and science. ## Pages - [Protocol.com home](https://protocol.com/): the facts as a TCP handshake, the six meanings of the word, use cases by industry as a routing table, FAQ and contact ## Credits - Landing page designed and built by QQuantum.ai: https://qquantum.ai/creative-design/domain-landing-pages