To cite package ‘IP’ in publications use:

  Soubiran T (2024). _IP: Classes and Methods for 'IP' Addresses_. R
  package version 0.1.4, <https://CRAN.R-project.org/package=IP>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {IP: Classes and Methods for 'IP' Addresses},
    author = {Thomas Soubiran},
    year = {2024},
    note = {R package version 0.1.4},
    url = {https://CRAN.R-project.org/package=IP},
  }