Type ASN code or IP and hit Check button
ASN information of 163.20.42.251
Query
163.20.42.251
ASN Information
% [whois.apnic.net] % Whois data copyright terms http://www.apnic.net/db/dbcopyright.html % Information related to '163.13.0.0 - 163.28.255.255' % Abuse contact for '163.13.0.0 - 163.28.255.255' is '[email protected]' inetnum: 163.13.0.0 - 163.28.255.255 netname: TANET-B descr: imported inetnum object for MOEC country: TW admin-c: TA61-AP tech-c: TA61-AP abuse-c: AT939-AP status: ALLOCATED PORTABLE mnt-by: MAINT-TW-TWNIC mnt-irt: IRT-TANET-TW last-modified: 2025-11-07T01:38:34Z source: APNIC irt: IRT-TANET-TW address: Ministry of Education computer Center address: 12F, No 106, Sec. 2, Heping E. Rd., Taipei e-mail: [email protected] abuse-mailbox: [email protected] admin-c: TWA2-AP tech-c: TWA2-AP auth: # Filtered mnt-by: MAINT-TW-TWNIC last-modified: 2025-11-06T07:51:48Z source: APNIC role: ABUSE TWNICAP country: ZZ address: 3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan phone: +000000000 e-mail: [email protected] admin-c: TWA2-AP tech-c: TWA2-AP nic-hdl: AT939-AP remarks: Generated from irt object IRT-TWNIC-AP remarks: [email protected] was validated on 2025-05-23 abuse-mailbox: [email protected] mnt-by: APNIC-ABUSE last-modified: 2025-05-23T00:02:10Z source: APNIC person: TANET ADMIN nic-hdl: TA61-AP e-mail: [email protected] address: 12F, No 106, Sec. 2, Heping E. Rd., Taipei address: Taipei, 106, R.O.C phone: +886-2-7712-9079 fax-no: +886-2-2737-7043 country: TW mnt-by: MAINT-TW-TWNIC last-modified: 2025-08-28T08:29:03Z source: APNIC remarks: (hid:K92-TW) % Information related to '163.20.0.0 - 163.20.255.255' inetnum: 163.20.0.0 - 163.20.255.255 netname: T-TP2RC.EDU.TW-NET descr: Ministry of Education Computer Center descr: 12F, No 106, Sec.2,Hoping E. Rd. descr: Taipei Taiwan country: TW admin-c: AN195-TW tech-c: AN195-TW mnt-by: MAINT-TW-TWNIC changed: [email protected] 19920517 status: ASSIGNED NON-PORTABLE 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: Admin NCCU address: National Chengchi University address: 64, Sec. 2,Zhi-nan Rd., Wenshan address: Taipei Taiwan country: TW phone: +886-2-2939-3091 fax-no: +886-2-2939-8043 e-mail: [email protected] nic-hdl: AN195-TW changed: [email protected] 20041014 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 % This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-US2)
ASN Lookup
Quickly lookup updated information about specific Autonomous System Number (ASN), Organization, CIDR, or registered IP addresses (IPv4 and IPv6).
An ASN (Autonomous System Number) Lookup tool is a service that allows you to find information about an Autonomous System (AS), which is a collection of networks that operate under a single administrative domain. An AS is identified by a unique ASN, which is assigned by the Internet Assigned Numbers Authority (IANA). The ASN Lookup tool allows you to find information about an AS, including its name, country, and internet service provider (ISP).
How to Use an ASN Lookup Tool?
Enter the ASN number.
You can find the ASN number by using other networking tools, such as traceroute, or by searching for the organization name or ISP associated with the AS.
Run the Lookup tool: Click the "Check" button to run the ASN Lookup tool. The tool will scan its database and provide information about the AS associated with the ASN number.
Review the results: The ASN Lookup tool will provide a report that lists the name of the AS, the country where it is located, and the ISP that manages the AS. It may also provide additional information, such as the IP address ranges associated with the AS.
Use the information: Once you've looked up the ASN, you can use the information for a variety of purposes, such as troubleshooting network issues, identifying potential security threats, or optimizing network performance.
