This is my first post.

The site/domain name, getname.info, comes from getnameinfo(3).

GETNAMEINFO(3)         FreeBSD Library Functions Manual         GETNAMEINFO(3)

NAME
     getnameinfo – socket address structure to hostname and service name

SYNOPSIS
     #include <sys/types.h>
     #include <sys/socket.h>
     #include <netdb.h>

     int
     getnameinfo(const struct sockaddr *sa, socklen_t salen, char *host,
         size_t hostlen, char *serv, size_t servlen, int flags);

DESCRIPTION
     The getnameinfo() function is used to convert a sockaddr structure to a
     pair of host name and service strings.  It is a replacement for and
     provides more flexibility than the gethostbyaddr(3) and getservbyport(3)
     functions and is the converse of the getaddrinfo(3) function.