Acta Arithmetica: Contents, some text from 1998.
Fibonacci Quarterly: Focal point for interest in Fibonacci numbers and related questions. Publisher's home page. Contents list is available online.
Finite Fields and Their Applications: Professional Publisher's site advertising a journal on Finite Field Theory. Well presented and informative.
INTEGERS: The Electronic Journal of Combinatorial Number Theory: Free refereed electronic journal.
International Journal of Number Theory: (World Scientific) Original research papers and review articles on all areas of Number Theory.
Journal de Théorie des Nombres de Bordeaux: Contents and abstracts free, full text with eight month delay, from vol.6 (1994).
Journal of Number Theory: Publisher's site.
Journal of Number Theory: Editorial contact information.
Mathematics of Computation: Areas covered include numerical analysis, computational number theory and algebra, and related fields. Table of contents. Articles available to subscribers.
Ramanujan Journal: (Kluwer) An international journal devoted to the areas of mathematics influenced by Ramanujan. Publisher's site. Table of contents. Text available to subscribers.
Smarandache Notions Journal: Containing several number theory articles primarily about Smarandache's work.