When post-"Man of Steel (1986)" publication resumed, Action Comics (1938) continued with existing issue counts, but Superman was renumbered to Superman (1987) #1. The Superman (1939) issue counts were resumed with "Adventures of Superman (1987)", another monthly Superman title.
In 2006, the two Superman series (Adventures of Superman (1987) and Superman (1987)) were re-merged into a new Superman title (Superman (2006)), with issue number 650, and ran until 2011 with issue 714.
|Series||Issues||Total Issues||"Full" Superman Numbering|
|Adventures of Superman (1987)||424-649||226||424-649|
|Total "Superman" Issues||940|
Aside from a period of weekly publication (in 1988-89), Action Comics continued to be a monthly comic book, finishing with issue #904 in 2011.
In 2011, DC re-launched 52 titles ("The New 52"), with both Action Comics and Superman re-launched with new #1 issues, and a renewed character, history and uniform.
Watch for DC re-numbering "back" to original, as it is difficult to see DC skipping the first industry "#1000" issue for Action Comics, and later Detective Comics and Superman. In fact, Superman could reasonably become the first "1000" issue, if you count both "Superman (1987)" and "Adventures of Superman (1987)" in the "Superman" count, which is actually more reasonable than many of the recent re-numberings. This would put "Superman" at #940 at the start of 2011, while "Action Comics" was at #904, putting "Superman" 3 years ahead in the race to #1000 - 60 issues is only 5 years, so it would hit that milestone in 2016.
From the Super-Hero Wiki page (http://superherouniverse.com/wiki/Superman_(comic_book)/index.html):
The Superman comic book began being published quarterly, soon going bimonthly and in the late 1950s turning monthly. This initial Superman series went on a three-month hiatus with issue #423 (Sept. 1986), as did sister title Action Comics, while the new Man of Steel limited series was published, introducing the post-Crisis on Infinite Earths Superman.
After that limited series, Action Comics returned and Superman Vol. 2, #1 was published. A new title, Adventures of Superman premiered with #424, continuing the numbering of the original Superman series.
Superman Vol. 2 reached issue #226 (April 2006) and was then cancelled as part of the companywide Infinite Crisis storyline. Adventures of Superman was returned to its original title, Superman, with issue #650 (May 2006). Action Comics had continued publication normally.