BLAST is
aprogram for homology search.
DDBJ added new function for multiple query sequences to BLAST service. You can now ask multiple query sequences at once.
This function is only available when "E-mail" is selected as the way to get result. Please use it. 
Example of multiple query sequence (multi FASTA format):    >my query sequence 1    CACCCTCTCTTCACTGGAAAGGACACCATGAGCACGGAAAGCATGATCCAGGACGTGGAA    GCTGGCCGAGGAGGCGCTCCCCAGGAAGACAGCAGGGCCCCAGGGCTCCAGGCGGTGCTG    GTTCCTCAGCCTCTTCTCCTTCCTGCTCGTGGCAGGCGCCGCCAC    >my query sequence 2    GGCCAGGGCACCCAGTCTGAGAACAGCTGCACCCGCTTCCCAGGCAACCTGCCTCACATG    CTTCGAGACCTCCGAGATGCCTTCAGCAGAGTGAAGACTTTCTTTCAAATGAAGGATCAG    CTGGACAACATATTGTTAAAGGAGTCCTTGCTGGAGGACTTTAAG    >my query sequence 3    ATGGGTCTCACCTCCCAACTGCTTCCCCCTCTGTTCTTCCTGCTAGCATGTGCCGGCAAC    TTTGCCCACGGACACAACTGCCATATCGCCTTACGGGAGATCATCGAAACTCTGAACAGC    CTCACAGAGCAGAAGACTCTGTGCACCAAGTTGACCATAACGGAC