To cite package ‘ip2whois’ in publications use:

IP2WHOIS (2024). ip2whois: Lookup 'WHOIS' Information for a Particular Domain. R package version 1.0.0, https://CRAN.R-project.org/package=ip2whois.

Corresponding BibTeX entry:

  @Manual{,
    title = {ip2whois: Lookup 'WHOIS' Information for a Particular
      Domain},
    author = {{IP2WHOIS}},
    year = {2024},
    note = {R package version 1.0.0},
    url = {https://CRAN.R-project.org/package=ip2whois},
  }