0x004.com is valuable because it resonates with technology and software communities, particularly those involved in programming, cryptography, or blockchain. '0x004' suggests a hexadecimal value, which is commonly used in computing and coding environments. The '.com' top-level domain enhances its appeal, suggesting a commercial or widely recognized entity. This combination can be particularly appealing for tech companies, cybersecurity firms, or digital platforms looking to emphasize a technological edge.