% 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 '61.31.0.0 - 61.31.255.255'

% Abuse contact for '61.31.0.0 - 61.31.255.255' is 'hostmaster@twnic.tw'

inetnum:        61.31.0.0 - 61.31.255.255
netname:        TFN-NET
descr:          Taiwan Fixed Network CO.,LTD.
descr:          7FI., No. 498, Ruei-Guang Rd., Nei-Hu
descr:          Taipei Taiwan 114.
country:        TW
admin-c:        pNA3-AP
tech-c:         pNA3-AP
abuse-c:        AT939-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-TW-TWNIC
mnt-irt:        IRT-TWNIC-AP
last-modified:  2021-11-04T00:49:17Z
source:         APNIC

irt:            IRT-TWNIC-AP
address:        3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan
e-mail:         hostmaster@twnic.tw
abuse-mailbox:  hostmaster@twnic.tw
admin-c:        TWA2-AP
tech-c:         TWA2-AP
auth:           # Filtered
remarks:        Please note that TWNIC is not an ISP and is not empowered
remarks:        to investigate complaints of network abuse.
remarks:        hostmaster@twnic.tw is invalid
mnt-by:         MAINT-TW-TWNIC
last-modified:  2025-02-21T07:05:51Z
source:         APNIC

role:           ABUSE TWNICAP
country:        ZZ
address:        3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan
phone:          +000000000
e-mail:         hostmaster@twnic.tw
admin-c:        TWA2-AP
tech-c:         TWA2-AP
nic-hdl:        AT939-AP
remarks:        Generated from irt object IRT-TWNIC-AP
remarks:        hostmaster@twnic.tw is invalid
abuse-mailbox:  hostmaster@twnic.tw
mnt-by:         APNIC-ABUSE
last-modified:  2025-02-21T07:06:08Z
source:         APNIC

role:           profond Network Administrator
address:        8F., No.172-1, Sec.2, Ji-Lung Rd,
address:        Taipei, Taiwan, 106, R.O.C
country:        TW
phone:          +886-2-6639-0859
fax-no:         +886-2-6639-0859
e-mail:         ethanchen@taiwanmobile.com
admin-c:        EC648-AP
tech-c:         EC648-AP
nic-hdl:        pNA3-AP
remarks:        The role object should be used when making
remarks:        changes to admin-c or tech-c handle.
notify:         hostmaster@twnic.net.tw
mnt-by:         MAINT-TW-TWNIC
last-modified:  2015-04-22T00:50:45Z
source:         APNIC

% Information related to '61.31.192.0 - 61.31.207.255'

inetnum:        61.31.192.0 - 61.31.207.255
netname:        TFN-NET
descr:          Taiwan Fixed Network CO.,LTD.
descr:          15 F., No. 172-1, Sec. 2, Keelung Rd., Da???an Dist.
descr:          Taipei City Taiwan
country:        TW
admin-c:        L369-TW
tech-c:         L369-TW
mnt-by:         MAINT-TW-TWNIC
changed:        raymondsun@taiwanmobile.com 20200314
status:
remarks:        This information has been partially mirrored by APNIC from
remarks:        TWNIC. To obtain more specific information, please use the
remarks:        TWNIC whois server at whois.twnic.net.
source:         TWNIC

person:         Hans Liu
address:        System Design Div.
address:        12th Floor, No. 88, Yanchang Road, Xinyi District
address:        Taipei  Taiwan
country:        TW
phone:          +886-9-5393-1934
fax-no:
e-mail:         hansliu@taiwanmobile.com
nic-hdl:        L369-TW
changed:        hostmaster@twnic.net 20210602
remarks:        This information has been partially mirrored by APNIC from
remarks:        TWNIC. To obtain more specific information, please use the
remarks:        TWNIC whois server at whois.twnic.net.
source:         TWNIC

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