% [whois.apnic.net] % Whois data copyright terms http://www.apnic.net/db/dbcopyright.html % Information related to '42.16.0.0 - 42.47.255.255' % Abuse contact for '42.16.0.0 - 42.47.255.255' is 'irt@nic.or.kr' inetnum: 42.16.0.0 - 42.47.255.255 netname: SK-TELECOM-NET descr: SK Telecom admin-c: IM687-AP tech-c: IM687-AP country: KR status: ALLOCATED PORTABLE mnt-by: MNT-KRNIC-AP mnt-irt: IRT-KRNIC-KR last-modified: 2017-12-26T05:57:32Z 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: 2025-04-10T04:49:23Z source: APNIC person: IP Manager address: Seoul Jung-gu Eulji-ro 65 country: KR phone: +82-2-1599-0011 e-mail: sktsec@sk.com nic-hdl: IM687-AP mnt-by: MNT-KRNIC-AP last-modified: 2017-10-10T00:50:38Z source: APNIC % Information related to '42.16.0.0 - 42.47.255.255' inetnum: 42.16.0.0 - 42.47.255.255 netname: SK-TELECOM-NET-KR descr: SK Telecom country: KR admin-c: IA110-KR tech-c: IA110-KR status: ALLOCATED PORTABLE 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 Jung-gu Eulji-ro 65 address: T tower country: KR phone: +82-2-1599-0011 e-mail: sktsec@sk.com nic-hdl: IA110-KR mnt-by: MNT-KRNIC-AP 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 % This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-UK2)

Host 10.28.20.42.in-addr.arpa. not found: 3(NXDOMAIN)

; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.9 <<>> 42.20.28.10 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 1784 ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 512 ;; QUESTION SECTION: ;42.20.28.10. IN A ;; AUTHORITY SECTION: . 86240 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2025041502 1800 900 604800 86400 ;; Query time: 4 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Wed Apr 16 01:24:23 UTC 2025 ;; MSG SIZE rcvd: 115

** server can't find 10.28.20.42.in-addr.arpa.: NXDOMAIN

No results found, please run it to get the result.

traceroute to 42.20.28.10 (42.20.28.10), 30 hops max, 60 byte packets 1 gateway (172.31.1.1) 4.547 ms 4.523 ms 4.529 ms 2 22399.your-cloud.host (49.12.143.208) 2.505 ms 2.557 ms 2.790 ms 3 * * * 4 spine8.cloud1.nbg1.hetzner.com (49.12.143.97) 3.720 ms * * 5 * * * 6 core12.nbg1.hetzner.com (213.239.203.105) 3.457 ms core12.nbg1.hetzner.com (213.239.239.141) 0.983 ms core11.nbg1.hetzner.com (213.239.239.121) 0.979 ms 7 core4.fra.hetzner.com (213.239.245.245) 3.934 ms core0.fra.hetzner.com (213.239.252.25) 3.417 ms core4.fra.hetzner.com (213.239.245.33) 3.474 ms 8 de-cix2.skbroadband.com (80.81.197.58) 158.742 ms 158.584 ms 158.601 ms 9 * * * 10 * * * 11 * * * 12 * * * 13 * * * 14 * * * 15 * * * 16 * * * 17 * * * 18 * * * 19 * * * 20 * * * 21 * * * 22 * * * 23 * * * 24 * * * 25 * * * 26 * * * 27 * * * 28 * * * 29 * * * 30 * * *

Country code: KR Country name: Korea ASN: AS9644 SK Telecom