% 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 '117.250.64.128 - 117.250.64.135'

% Abuse contact for '117.250.64.128 - 117.250.64.135' is 'abuse1@bsnl.co.in'

inetnum:        117.250.64.128 - 117.250.64.135
netname:        NIT-Durgapur_BW-ID-2163
descr:          NIT Durgapur
country:        IN
admin-c:        BS1372-AP
admin-c:        NC83-AP
tech-c:         TM1203-AP
tech-c:         CDN1-AP
abuse-c:        AB1061-AP
status:         ASSIGNED NON-PORTABLE
mnt-by:         MAINT-IN-DOT
mnt-irt:        IRT-BSNL-IN
last-modified:  2023-07-08T05:31:51Z
source:         APNIC

irt:            IRT-BSNL-IN
address:        Internet Cell
address:        Bharat Sanchar Nigam Limited.
address:        8th Floor,148-B Statesman House
address:        Barakhamba Road, New Delhi - 110 001
e-mail:         abuse1@bsnl.co.in
abuse-mailbox:  abuse1@bsnl.co.in
admin-c:        NC83-AP
tech-c:         CGMD1-AP
auth:           # Filtered
remarks:        abuse1@bsnl.co.in was validated on 2025-07-02
mnt-by:         MAINT-IN-DOT
last-modified:  2025-11-18T00:26:22Z
source:         APNIC

role:           ABUSE BSNLIN
country:        ZZ
address:        Internet Cell
address:        Bharat Sanchar Nigam Limited.
address:        8th Floor,148-B Statesman House
address:        Barakhamba Road, New Delhi - 110 001
phone:          +000000000
e-mail:         abuse1@bsnl.co.in
admin-c:        NC83-AP
tech-c:         CGMD1-AP
nic-hdl:        AB1061-AP
remarks:        Generated from irt object IRT-BSNL-IN
remarks:        abuse1@bsnl.co.in was validated on 2025-07-02
abuse-mailbox:  abuse1@bsnl.co.in
mnt-by:         APNIC-ABUSE
last-modified:  2025-07-02T04:54:12Z
source:         APNIC

role:           CGM Data Networks
address:        CTS Compound
address:        Netaji Nagar
address:        New Delhi- 110 023
country:        IN
phone:          +91-11-24106782
phone:          +91-11-24102119
fax-no:         +91-11-26116783
fax-no:         +91-11-26887888
e-mail:         dnwplg@bsnl.co.in
e-mail:         hostmaster@bsnl.co.in
admin-c:        CGMD1-AP
tech-c:         DT197-AP
tech-c:         BH155-AP
nic-hdl:        CDN1-AP
mnt-by:         MAINT-IN-DOT
last-modified:  2021-12-08T11:06:57Z
source:         APNIC

role:           NS Cell
address:        Internet Cell
address:        Bharat Sanchar Nigam Limited
address:        8th Floor,148-B Statesman House
address:        Barakhamba Road, New Delhi - 110 001
country:        IN
phone:          +91-11-23734057
phone:          +91-11-23710183
fax-no:         +91-11-23734052
e-mail:         hostmaster@bsnl.co.in
e-mail:         abuse1@bsnl.co.in
admin-c:        CGMD1-AP
tech-c:         DT197-AP
nic-hdl:        NC83-AP
mnt-by:         MAINT-IN-DOT
last-modified:  2022-03-16T10:12:22Z
source:         APNIC

person:         Bibhash Sarkar
nic-hdl:        BS1372-AP
address:        2nd Floor, NIT Building
address:        M G Avenue
address:        Durgapur-5
phone:          +91-9434788161
country:        IN
e-mail:         hod@cc.dgpnit.ac.in
mnt-by:         MAINT-IN-PER-DOT
last-modified:  2023-07-07T08:58:12Z
source:         APNIC

person:         Tapan MOndal
nic-hdl:        TM1203-AP
address:        2nd Floor, NIT Building
address:        M G Avenue
address:        Durgapur
phone:          +91-9434788004
country:        IN
e-mail:         hod@cc.dgpnit.ac.in
mnt-by:         MAINT-IN-PER-DOT
last-modified:  2023-07-07T08:58:13Z
source:         APNIC

% Information related to '117.250.64.0/20AS9829'

route:          117.250.64.0/20
descr:          BSNL Internet
country:        IN
origin:         AS9829
mnt-lower:      MAINT-IN-DOT
mnt-routes:     MAINT-IN-DOT
mnt-by:         MAINT-IN-AS9829
last-modified:  2008-09-04T07:55:07Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-AU4)