Meaning of second-level domain | Babel Free
Definitions
A domain that is immediately subordinate to a top-level domain (whose name appears after it, with a period separating the two).
Internet
Examples
“Wiktionary.org is a second-level domain, part of the org top-level domain.”
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.