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

% [whois.apnic.net]
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% Information related to '49.0.128.0 - 49.0.159.255'

% Abuse contact for '49.0.128.0 - 49.0.159.255' is 'ulemj@yokozunanet.mn'

inetnum:        49.0.128.0 - 49.0.159.255
netname:        YOKOZUNANET-AS-AP
descr:          YokozunaNET
descr:          Cultural Palace 801
descr:          8-th Khoroo
descr:          Sukhbaatar District
country:        MN
org:            ORG-YA8-AP
admin-c:        JL3844-AP
tech-c:         JL3844-AP
abuse-c:        AY517-AP
status:         ALLOCATED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-MN-YOKOZUNANET
mnt-routes:     MAINT-MN-YOKOZUNANET
mnt-irt:        IRT-YOKOZUNANET-MN
last-modified:  2022-08-12T17:25:37Z
source:         APNIC

irt:            IRT-YOKOZUNANET-MN
address:        8F, 8th khoroo, Sukh-Bator District, Ulaanbaatar
e-mail:         ulemj@yokozunanet.mn
abuse-mailbox:  ulemj@yokozunanet.mn
admin-c:        JL3844-AP
tech-c:         JL3844-AP
auth:           # Filtered
remarks:        ulemj@yokozunanet.mn is invalid
mnt-by:         MAINT-MN-YOKOZUNANET
last-modified:  2025-11-18T00:26:33Z
source:         APNIC

organisation:   ORG-YA8-AP
org-name:       YokozunaNET
org-type:       LIR
country:        MN
address:        Cultural Palace 801
address:        8-th Khoroo
address:        Sukhbaatar District
phone:          +976-70116161
fax-no:         +976-7011-0596
e-mail:         info@yokozunanet.mn
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:11Z
source:         APNIC

role:           ABUSE YOKOZUNANETMN
country:        ZZ
address:        8F, 8th khoroo, Sukh-Bator District, Ulaanbaatar
phone:          +000000000
e-mail:         ulemj@yokozunanet.mn
admin-c:        JL3844-AP
tech-c:         JL3844-AP
nic-hdl:        AY517-AP
remarks:        Generated from irt object IRT-YOKOZUNANET-MN
remarks:        ulemj@yokozunanet.mn is invalid
abuse-mailbox:  ulemj@yokozunanet.mn
mnt-by:         APNIC-ABUSE
last-modified:  2024-10-09T13:08:20Z
source:         APNIC

person:         Jazag Lkhagvasuren
address:        8F, 8th khoroo, Sukh-Bator District, Ulaanbaatar
country:        MN
phone:          +976-7011-0596
e-mail:         lkhagvasuren@yokozunanet.mn
nic-hdl:        JL3844-AP
mnt-by:         MAINT-MN-YOKOZUNANET
last-modified:  2010-08-14T04:16:50Z
source:         APNIC

% Information related to '49.0.128.0/19AS38818'

route:          49.0.128.0/19
origin:         AS38818
descr:          YokozunaNET
                Cultural Palace 801
                8-th Khoroo
                Sukhbaatar District
mnt-by:         MAINT-MN-YOKOZUNANET
last-modified:  2021-09-28T01:48:31Z
source:         APNIC

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