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% APNIC found the following authoritative answer from: whois.apnic.net
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% Information related to '42.1.64.0 - 42.1.127.255'
% Abuse contact for '42.1.64.0 - 42.1.127.255' is 'hm-changed@vnnic.vn'
inetnum: 42.1.64.0 - 42.1.127.255 netname: MOBIFONE-VN descr: Mobifone Corporation descr: 01 Pham Van Bach, Cau Giay, Ha Noi country: VN admin-c: DDD5-AP tech-c: DQD3-AP tech-c: VDL1-AP status: ALLOCATED PORTABLE mnt-by: MAINT-VN-VNNIC mnt-lower: MAINT-VN-VNNIC mnt-irt: IRT-VNNIC-AP abuse-c: DQD3-AP last-modified: 2023-03-27T03:33:48Z source: APNIC
irt: IRT-VNNIC-AP address: Ha Noi, VietNam phone: +84-24-35564944 fax-no: +84-24-37821462 e-mail: hm-changed@vnnic.vn abuse-mailbox: hm-changed@vnnic.vn admin-c: NTTT1-AP tech-c: NTTT1-AP auth: # Filtered mnt-by: MAINT-VN-VNNIC last-modified: 2017-11-08T09:40:06Z source: APNIC
person: Doan Dinh Dan address: Mobifone Corporation country: VN phone: +84-24-37831770 e-mail: dan.doan@mobifone.vn nic-hdl: DDD5-AP mnt-by: MAINT-VN-VNNIC last-modified: 2017-11-19T02:44:57Z source: APNIC
person: Do Quang Duong address: MOBIFONE-VN country: VN phone: +84-2437831769 e-mail: duong.do@mobifone.vn nic-hdl: DQD3-AP mnt-by: MAINT-VN-VNNIC last-modified: 2021-07-01T11:29:06Z source: APNIC
person: Vu Dinh Long address: MOBIFONE-VN country: VN phone: +84-903488383 e-mail: long.vudinh@mobifone.vn nic-hdl: VDL1-AP mnt-by: MAINT-VN-VNNIC last-modified: 2023-03-27T03:32:11Z source: APNIC
% Information related to '42.1.70.0/24AS131429'
route: 42.1.70.0/24 origin: AS131429 descr: Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 24th floor, VNTA Tower, Duong Dinh Nghe, Cau Giay, Hanoi mnt-by: MAINT-VN-VNNIC last-modified: 2021-10-01T04:25:13Z source: APNIC
% This query was served by the APNIC Whois Service version 1.88.25 (WHOIS-AU1)
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