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

% [whois.apnic.net]
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% Information related to '103.31.180.0 - 103.31.183.255'

% Abuse contact for '103.31.180.0 - 103.31.183.255' is 'irt@nic.or.kr'

inetnum:        103.31.180.0 - 103.31.183.255
netname:        DOTNAME
descr:          Dotname Korea Corp
admin-c:        IM581-AP
tech-c:         IM581-AP
country:        KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2022-12-20T03:13:28Z
remarks:        -----BEGIN CERTIFICATE-----MIIEFTCCAv2gAwIBAgIUVDAwiLb7dEQ8+aV8BdlthxrfmkowDQYJKoZIhvcNAQELBQAwgZkxCzAJBgNVBAYTAktSMQ4wDAYDVQQIDAVTZW91bDEOMAwGA1UEBwwFU2VvdWwxGzAZBgNVBAoMEkRvdG5hbWUgS29yZWEgQ29ycDEMMAoGA1UECwwDRGV2MRYwFAYDVQQDDA1kb3RuYW1lLmNvLmtyMScwJQYJKoZIhvcNAQkBFhhob3N0aW5nQGRvdG5hbWVrb3JlYS5jb20wHhcNMjIxMjE4MTMxMjU1WhcNMjMxMjE4MTMxMjU1WjCBmTELMAkGA1UEBhMCS1IxDjAMBgNVBAgMBVNlb3VsMQ4wDAYDVQQHDAVTZW91bDEbMBkGA1UECgwSRG90bmFtZSBLb3JlYSBDb3JwMQwwCgYDVQQLDANEZXYxFjAUBgNVBAMMDWRvdG5hbWUuY28ua3IxJzAlBgkqhkiG9w0BCQEWGGhvc3RpbmdAZG90bmFtZWtvcmVhLmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMz1WdvFW8P/YbO7Q7GK+/JcFC1blLZTyqVH5ix3ansqyiceVEu3bGwd5rYhXHYKHMM5LzFMTRICKfOwNb6ROvszky+GZVH95csXQn/AYIY1Jo0xour/Urs/BT5BhvL3Fi69nKJVY42FyuZKhFLmGAf3e4I6init3jVciPXjsu+8QIc5eUg4HhVptOhlllEaPOoFK7Zxgam2Mb+8uSWdYYqJr3vXkiFFWbP2QjFptkpwlBJUETleWpNCdUlvX2EYrNu1bpwS+LEAvBCS4k1fwLCnloGK0CVIHZ/24dpMv64TwnIsUw44/M1fN5xs1ZothTQJhBc9rruA/1FiDNT0G40CAwEAAaNTMFEwHQYDVR0OBBYEFO/lwjnrGL/nJvsDqquQ3mstowkMMB8GA1UdIwQYMBaAFO/lwjnrGL/nJvsDqquQ3mstowkMMA8GA1UdEwEB/wQFMAMBAf8wDQYJKoZIhvcNAQELBQADggEBACMPsOZGmmrHFfNQDpUoIp597E0cM98zWJAC4HEiVfdZeKEF4DEnuH/pQwKb+raK+u9RXOgQaPk93YkwzAhUOaZb69h86538CsjbYs55vwoxgkNwde5p9Hi6VoJv5CF68XqzuXyZ3gUAO7JOeoE4ynGxTfjRT8mn16ijC/549xblRudNpdgDJpyTxvPXmE0mjmQvq88KLInuybn3sAMF4h9iXMVryowbuuQZzzcoT3GeJpmXmegXqy/hT46KmyIZALmr4Z4Vw+1Sx92I73fuHPOdCLeRI9B9FVfQvBhMxys5GRD6ECtC495Hv7YwQZhkS0ug54c+VLaRQQ03ulRwyl4=-----END CERTIFICATE-----
source:         APNIC

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
e-mail:         irt@nic.or.kr
abuse-mailbox:  irt@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        irt@nic.or.kr was validated on 2020-04-09
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-09-04T01:00:01Z
source:         APNIC

person:         IP Manager
address:        Seoul Gangnam-gu Teheran-ro 234
country:        KR
phone:          +82-31-266-5896
e-mail:         noc@dotnamekorea.com
nic-hdl:        IM581-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-10-29T08:50:02Z
source:         APNIC

% Information related to '103.31.182.0/24AS18328'

route:          103.31.182.0/24
origin:         AS18328
descr:          Korea Internet & Security Agency (KISA)
                Seocho-ro 398, Seocho-gu, Seoul, Korea
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-12-08T01:18:28Z
source:         APNIC

% Information related to '103.31.180.0 - 103.31.183.255'

inetnum:        103.31.180.0 - 103.31.183.255
netname:        DOTNAME-KR
descr:          Dotname Korea Corp
country:        KR
admin-c:        HS491-KR
tech-c:         HS491-KR
status:         ALLOCATED PORTABLE
remarks:        -----BEGIN CERTIFICATE-----MIIEFTCCAv2gAwIBAgIUVDAwiLb7dEQ8+aV8BdlthxrfmkowDQYJKoZIhvcNAQELBQAwgZkxCzAJBgNVBAYTAktSMQ4wDAYDVQQIDAVTZW91bDEOMAwGA1UEBwwFU2VvdWwxGzAZBgNVBAoMEkRvdG5hbWUgS29yZWEgQ29ycDEMMAoGA1UECwwDRGV2MRYwFAYDVQQDDA1kb3RuYW1lLmNvLmtyMScwJQYJKoZIhvcNAQkBFhhob3N0aW5nQGRvdG5hbWVrb3JlYS5jb20wHhcNMjIxMjE4MTMxMjU1WhcNMjMxMjE4MTMxMjU1WjCBmTELMAkGA1UEBhMCS1IxDjAMBgNVBAgMBVNlb3VsMQ4wDAYDVQQHDAVTZW91bDEbMBkGA1UECgwSRG90bmFtZSBLb3JlYSBDb3JwMQwwCgYDVQQLDANEZXYxFjAUBgNVBAMMDWRvdG5hbWUuY28ua3IxJzAlBgkqhkiG9w0BCQEWGGhvc3RpbmdAZG90bmFtZWtvcmVhLmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMz1WdvFW8P/YbO7Q7GK+/JcFC1blLZTyqVH5ix3ansqyiceVEu3bGwd5rYhXHYKHMM5LzFMTRICKfOwNb6ROvszky+GZVH95csXQn/AYIY1Jo0xour/Urs/BT5BhvL3Fi69nKJVY42FyuZKhFLmGAf3e4I6init3jVciPXjsu+8QIc5eUg4HhVptOhlllEaPOoFK7Zxgam2Mb+8uSWdYYqJr3vXkiFFWbP2QjFptkpwlBJUETleWpNCdUlvX2EYrNu1bpwS+LEAvBCS4k1fwLCnloGK0CVIHZ/24dpMv64TwnIsUw44/M1fN5xs1ZothTQJhBc9rruA/1FiDNT0G40CAwEAAaNTMFEwHQYDVR0OBBYEFO/lwjnrGL/nJvsDqquQ3mstowkMMB8GA1UdIwQYMBaAFO/lwjnrGL/nJvsDqquQ3mstowkMMA8GA1UdEwEB/wQFMAMBAf8wDQYJKoZIhvcNAQELBQADggEBACMPsOZGmmrHFfNQDpUoIp597E0cM98zWJAC4HEiVfdZeKEF4DEnuH/pQwKb+raK+u9RXOgQaPk93YkwzAhUOaZb69h86538CsjbYs55vwoxgkNwde5p9Hi6VoJv5CF68XqzuXyZ3gUAO7JOeoE4ynGxTfjRT8mn16ijC/549xblRudNpdgDJpyTxvPXmE0mjmQvq88KLInuybn3sAMF4h9iXMVryowbuuQZzzcoT3GeJpmXmegXqy/hT46KmyIZALmr4Z4Vw+1Sx92I73fuHPOdCLeRI9B9FVfQvBhMxys5GRD6ECtC495Hv7YwQZhkS0ug54c+VLaRQQ03ulRwyl4=-----END CERTIFICATE-----
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
changed:        hostmaster@nic.or.kr 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

person:         IP Manager
address:        Seoul Gangnam-gu Teheran-ro 234
address:        Third Floor, Samik Rabidol Bldg.
country:        KR
phone:          +82-31-266-5896
e-mail:         noc@dotnamekorea.com
nic-hdl:        HS491-KR
mnt-by:         MNT-KRNIC-AP
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

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