> mail.yahoo.com
Server:  www.misd.k12.mi.us
Address:  207.190.177.4

;; res_nmkquery(QUERY, mail.yahoo.com, IN, A)
timeout
timeout
;; res_nmkquery(QUERY, mail.yahoo.com.misd.k12.mi.us, IN, A)
------------
Got answer:
    HEADER:
        opcode = QUERY, id = 36952, rcode = NXDOMAIN
        header flags:  response, auth. answer, want recursion, recursion avail.
        questions = 1,  answers = 0,  authority records = 1,  additional = 0

    QUESTIONS:
        mail.yahoo.com.misd.k12.mi.us, type = A, class = IN
    AUTHORITY RECORDS:
    ->  misd.k12.mi.us
        ttl = 86400 (1D)
        origin = scnc.misd.k12.mi.us
        mail addr = hostmaster.scnc.misd.k12.mi.us
        serial = 1099595015
        refresh = 10800 (3H)
        retry   = 1800 (30M)
        expire  = 604800 (1W)
        minimum ttl = 86400 (1D)

------------
;; res_nmkquery(QUERY, mail.yahoo.com.k12.mi.us, IN, A)
------------
Got answer:
    HEADER:
        opcode = QUERY, id = 36953, rcode = NXDOMAIN
        header flags:  response, want recursion, recursion avail.
        questions = 1,  answers = 0,  authority records = 1,  additional = 0

    QUESTIONS:
        mail.yahoo.com.k12.mi.us, type = A, class = IN
    AUTHORITY RECORDS:
    ->  k12.mi.us
        ttl = 10518 (2h55m18s)
        origin = dns.merit.net
        mail addr = domreg.merit.edu
        serial = 2004110200
        refresh = 28800 (8H)
        retry   = 14400 (4H)
        expire  = 2419200 (4W)
        minimum ttl = 172800 (2D)

------------
;; res_nmkquery(QUERY, www.yahoo.com.mi.us, IN, A)
------------
Got answer:
    HEADER:
        opcode = QUERY, id = 36962, rcode = NXDOMAIN
        header flags:  response, want recursion, recursion avail.
        questions = 1,  answers = 0,  authority records = 1,  additional = 0

    QUESTIONS:
        www.yahoo.com.mi.us, type = A, class = IN
    AUTHORITY RECORDS:
    ->  us
        ttl = 10446 (2h54m6s)
        origin = a.gtld.biz
        mail addr = hostmaster.gtld.biz
        serial = 2002305311
        refresh = 900 (15M)
        retry   = 900 (15M)
        expire  = 604800 (1W)
        minimum ttl = 86400 (1D)

------------
*** www.misd.k12.mi.us can't find www.yahoo.com: Non-existent host/domain