% 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 '210.18.78.0 - 210.18.78.255'

% Abuse contact for '210.18.78.0 - 210.18.78.255' is 'abuse@sifycorp.com'

inetnum:        210.18.78.0 - 210.18.78.255
netname:        SIFYINET
country:        IN
descr:          Allocated to Pune corporate customers
admin-c:        HS51-AP
tech-c:         HS51-AP
status:         ASSIGNED NON-PORTABLE
mnt-by:         MAINT-IN-SIFY
mnt-by:         MAINT-IN-IRINN
mnt-routes:     MAINT-IN-IRINN
mnt-irt:        IRT-SIFYNET-IN
last-modified:  2025-09-27T09:36:33Z
source:         APNIC

irt:            IRT-SIFYNET-IN
address:        Sify Limited,
address:        5th, 6th & 7th floor Reliable Plaza,
address:        Kalwa industrial Area, Thane Belapur Road,
address:        Airoli, Navi Mumbai-400708
e-mail:         ipadmin@sifycorp.com
abuse-mailbox:  abuse@sifycorp.com
admin-c:        HS51-AP
tech-c:         HS51-AP
auth:           # Filtered
mnt-by:         MAINT-IN-SIFY
mnt-by:         MAINT-IN-IRINN
last-modified:  2026-06-18T04:47:40Z
source:         APNIC

person:         Hostmaster Satyam Infoway
address:        Sify Limited,
address:        Second Floor, Tidel Park,
address:        No.4,Canal Bank Road,
address:        Taramani, Chennai - 600113
country:        IN
phone:          +914422541125
fax-no:         +914422540771
e-mail:         ipadmin@sifycorp.com
nic-hdl:        HS51-AP
mnt-by:         MAINT-IN-IRINN
last-modified:  2026-05-22T07:41:45Z
source:         APNIC

% Information related to '210.18.78.0/24AS9583'

route:          210.18.78.0/24
descr:          Sify ip address space
origin:         AS9583
mnt-by:         MAINT-IN-SIFY
mnt-by:         MAINT-IN-IRINN
mnt-routes:     MAINT-IN-IRINN
last-modified:  2025-12-14T22:04:45Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU4)