Before answering, I would like to point out a very important thing.
When asking questions, please inform us a MWE. It helps a lot to know your problem and avoids misinterpretations.
That said, I will assume your problem is not url splitting into 2 pages, but actually any bibliography text splitting into 2 pages.
For this question, there was an answer: How can I prevent page break between lines of a paragraph or bibliography entry?
The simplest method is to insert \interlinepenalty=10000 in your preamble. Edit Note: It will change the behavior of the whole text. Explanations below.
From the link: "You can modify the variable that tells TeX how bad an idea it is to break up lines of a paragraph". Check the link for a full explanation.
OBS: When you asked about the link, I really thought the issue came from large links going beyond the page or similarly. Sorry for that.
Please, test this option in your text.
Figures to illustrate follow.
Without \interlinepenalty=10000.

With \interlinepenalty=10000.

Edit: Following barbaras comment.
With \interlinepenalty=10000 at preamble you will break paragraphs you probably don't want.

With \interlinepenalty=10000 just before bibliography only References will break as desired. Other paragraphs will break normally.

A MWE (with my external .bib files, sorry for that) follows.
\documentclass[11pt]{article}
\usepackage[a4paper,top=2cm,bottom=2cm,left=2cm,right=2cm,marginparwidth=1.75cm]{geometry}
\usepackage{hyperref}
\usepackage{lipsum}
\bibliographystyle{unsrtdin}
% ============ Here, all paragraphs will not break
%\interlinepenalty=10000
\begin{document}
\cite{Meza_Zucatelli_Interface_2016}, \cite{Zucatelli_Meza_Fenili_LagranTexPack}.
\lipsum[1-14]. % 13 14
A.
B.
%C.
%
%D.
% ============ Here, only paragraphs in bibliography will not break
\interlinepenalty=10000
% Use your external .bib file.
\bibliography{C:/Users/FHZ/Dropbox/Artigos_Publicados_pdf_bib/Artigo_Meza_Zucatelli_IJCSSE_Bibtex,C:/Users/FHZ/Dropbox/Artigos_Publicados_pdf_bib/Artigo_Zucatelli_Meza_Fenili_LagranTexPack_IJCTE_Bibtex}
\end{document}
xurl? I think it might solve. I remember using it for line breaks but don't remember exactly how is the behavior or how other packages or bibliographystyles might interfere. – FHZ Feb 17 '20 at 12:53\enlargethispage{1\baselineskip}. (This should be done only on the final run.) – barbara beeton Feb 17 '20 at 19:30xurlbut nothing seems to change. – CRoNiC Feb 17 '20 at 22:021\baselineskipmight be foiled by a prohibition against leaving widow lines, so instead using\enlargethispage{2\baselineskip}might have a better chance. Or decrease the length of the first page by 1 line (or 2, if you have a situation where the bib entry is exactly 4 lines long). If you could show the troublesome entry as typeset (but as a unit, not split), we wouldn't be so dependent on our crystal ball. – barbara beeton Feb 18 '20 at 01:09