DNS reverse lookup not working..

options {
listen-on port 53 { any; };
# listen-on-v6 port 53 { ::1; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
query-source port 53;
query-source-v6 port 53;
allow-query { any; };
};

zone "." IN {
type hint;
file "named.ca";
};

zone "localdomain" IN {
type master;
file "localdomain.zone";
allow-update { none; };
};

zone "localhost" IN {
type master;
file "localhost.zone";
allow-update { none; };
};

zone "0.0.127.in-addr.arpa" IN {
type master;
file "named.local";
allow-update { none; };
};

zone "dypcoe.com" IN {
type master;
notify no;
file "dypcoe.com.zone";
allow-query { any; };
};

zone "0.168.192.in-addr.arpa" {
type master;
notify no;
allow-query { any; };
file "192.168.0.zone";
};

$TTL 86400
@ IN SOA myserver.dypcoe.com. root.dypcoe.com. (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS www
myserver.dypcoe.com. IN A 192.168.70.1

$TTL 86400
@ IN SOA myserver.dypcoe.com. root.myserver.dypcoe.com. (
1997022700 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
IN NS myserver.dypcoe.com.
1 IN PTR myserver.dypcoe.com.

ddns-update-style interim;
ignore client-updates;

subnet 192.168.70.0 netmask 255.255.255.0 {

option routers 192.168.70.1;
option subnet-mask 255.255.0.0;

option nis-domain "dypcoe.com";
option domain-name "dypcoe.com";

option time-offset -18000; # Eastern Standard Time

range dynamic-bootp 192.168.70.128 192.168.70.254;
default-lease-time 21600;
max-lease-time 43200;
}
#

Host 1.70.168.192.in-addr.arpa not found: 3(NXDOMAIN)