% APNIC found the following authoritative answer from: whois.apnic.net

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'MAINT-PK-AMIR'

mntner:         MAINT-PK-AMIR
upd-to:         dirdnw@ntc.net.pk
auth:           # Filtered
descr:          The reverse delegation zone for the IP range 202.83.160/20.  This network is used for Internet servers, routers, remote access servers and dialup ports
admin-c:        MJ412-AP
tech-c:         MJ412-AP
referral-by:    APNIC-HM
mnt-by:         MAINT-PK-AMIR
remarks:        This is the maintainer E-mail
last-modified:  2008-12-01T07:15:11Z
source:         APNIC

person:         Muzzammil Haroon Jan
nic-hdl:        MJ412-AP
e-mail:         nocisb@ntc.net.pk
address:        NTC HQs F-5/1 Islamabad.
phone:          +92-51-9208809
fax-no:         +92-51-9201489
country:        PK
mnt-by:         MAINT-PK-WAHEED
last-modified:  2015-06-10T03:26:25Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.25 (WHOIS-AU3)

Search for
IP address lookups			Miscellaneous queries
-l	1st level less specific		-i	Inverse attributes	None admin-c admin-c,tech-c,zone-c author cross-mnt cross-nfy local-as mbrs-by-ref member-of mnt-by mnt-lower mnt-nfy mnt-routes notify nserver origin person referral-by rev-srv sub-dom tech-c upd-to zone-c
-L	All less specific		-T	Object types	All as-block as-set aut-num domain filter-set inet-rtr inet6num inetnum irt key-cert mntner peering-set person role route route-set rtr-set
-m	1st level more specific
-M	All more specific		Query hints Include "AS" in front of an AS number. Example: AS4808 Include "-t" (template only) or "-v" (template and description) in front of an object name to view the template Example: -t inetnum
-x	Exact match only
-d	Associated reverse domain