diff --git a/scripts/perl/ftc_dnc_register.pl b/scripts/perl/ftc_dnc_register.pl
index 011569164e..0471719183 100644
--- a/scripts/perl/ftc_dnc_register.pl
+++ b/scripts/perl/ftc_dnc_register.pl
@@ -21,6 +21,7 @@ my @nums = <NUMS>;
 foreach my $num (@nums) {
   chomp $num;
   $num =~ s/^1//;
+  next if lenght($num) != 10;
   print "Dialing from $num\n";
   my @digits = split(//, $num);
   my $dial = join('w', @digits);