ETLD - MDN Web Docs Glossary: Definitions of Web-Related Terms | MDN
Fleeting- External reference: https://developer.mozilla.org/en-US/docs/Glossary/eTLD
eTLD - MDN Web Docs Glossary: Definitions of Web-related terms | MDN
eTLD stands for “effective top-level domain”
a domain under which domains can be registered by a single organization
eTLD+1 means an eTLD plus the next part of the domain name