Help setting up reverse lookup with BIND9

Question

First off, I'm still a newbie when it comes to Ubuntu. I would appreciate if someone could show me what I'm doing wrong. I have a Windows 10 machine as my main machine, and I run two VMs with VMWare, one of them is Ubuntu server, and the other is Ubuntu client. I've managed to successfully set up the DHCP server so far. I'm stuck with setting up the DNS server, I managed to get the hostname nslookup (i.e. ns1) to work correctly, however, I have NOT been able to get the nslookup 192.168.1.3 (i.e IP address) to work correctly. Here is what is currently in my settings:

named.conf.local:

//The following code defines the forward lookup zone.
zone “group2.lab” {
type master;
file “/etc/bind/zones/group2.lab.db”;
};

//The following code defines the reverse lookup zone.  
zone “1.168.192.in-addr.arpa” {
type master;
file “/etc/bind/zones/rev.1.168.192.in-addr.arpa”;
};

group2.lab.db:

$TTL 86400
@      IN   SOA   group2.lab. root (
          2 ; serial
          28800 ; refresh
          14400 ; retry
          3600000 ; expire
          86400 ; ttl
          )
       IN   NS    192.168.1.3.
       IN   MX    10  group2.lab.
ns1    IN   A     192.168.1.3
www    IN   CNAME ns1

rev.1.168.192.in-addr.arpa:

$TTL 86400
@           IN    SOA    group2.lab.  root (
              2009031001 ; serial
          28800 ; refresh
          14400 ; retry
          3600000 ; expire
          86400 ; ttl
          )
        IN    NS    192.168.1.3.
1           IN    PTR   ns1.group2.lab.

resolv.conf:

nameserver 192.168.1.3
nameserver 8.8.8.8
search group2.lab

hostname:

ubuntu

hosts:

127.0.0.1      localhost
127.0.1.1      ubuntu
192.168.1.3    ns1.group2.lab ns1

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

This is what I see when I attempt an nslookup:

root@ubuntu:~# nslookup ns1
Server: 192.168.1.3
Address:    192.168.1.3#53

Name:   ns1.group2.lab
Address:    192.168.1.3

root@ubuntu:~# nslookup 192.168.1.3
Server: 192.168.1.3
Address:    192.168.1.3#53

** server can't find 3.1.168.192.in-addr.arpa.: NXDOMAIN

Does anyone have any ideas? Any help is greatly appreciated. Thank you!

Solution

rev.1.168.192.in-addr.arpa:

$TTL 86400
@           IN    SOA    group2.lab.  root (
              2009031001 ; serial
          28800 ; refresh
          14400 ; retry
          3600000 ; expire
          86400 ; ttl
          )
        IN    NS    192.168.1.3.
1           IN    PTR   ns1.group2.lab.

should be:

$TTL 86400
@           IN    SOA    group2.lab.  root (
              2009031001 ; serial
          28800 ; refresh
          14400 ; retry
          3600000 ; expire
          86400 ; ttl
          )
        IN    NS    192.168.1.3.
3           IN    PTR   ns1.group2.lab.

Thanks for at least taking a look guys, after spending countless hours/days on this, I figured it out...the 1 should've been a 3 :).