<?xml version='1.0'?>

<reference anchor='RFC0503'>

<front>
<title>Socket number list</title>
<author initials='N.' surname='Neigus' fullname='N. Neigus'>
<organization /></author>
<author initials='J.' surname='Postel' fullname='J. Postel'>
<organization /></author>
<date month='April' day='12' year='1973' /></front>

<seriesInfo name='RFC' value='503' />
<format type='TXT' octets='8690' target='ftp://ftp.isi.edu/in-notes/rfc503.txt' />
</reference>
