59.0.0.0/11

Currently announced by AS4766 KT Corporation (Korea Telecom), in the routed prefix 59.0.0.0/11.

Current ASN: AS4766; KT Corporation (Korea Telecom)
Routed prefix: 59.0.0.0/11; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: APNIC; South Korea · 59.0.0.0/11

Routing data · Nov 10, 2026, 12:46 UTC

ASN historyEvery routed prefix covering 59.0.0.0/11

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
59.0.0.0/11	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing

More specific routes104 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
59.0.0.0/12	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.0.0.0/13	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.0.113.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.0.144.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.0.170.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.0.171.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.0.172.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.0.173.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.0.174.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.0.175.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.0.176.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.0.177.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.1.40.0/24	AS7560	Jeonbuk National University	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.1.41.0/24	AS7560	Jeonbuk National University	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.1.92.0/24	AS131814	Presbyterian Medical Center	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.2.109.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.2.112.0/24	AS9954	Kunsan National University (KNU)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.3.221.0/24	AS38681	Jeollanamdo Educational Research Information Institute	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.4.89.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.4.90.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.4.91.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.4.92.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.4.93.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.4.94.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.4.95.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.4.96.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.4.97.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.4.98.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.5.12.0/24	AS131835	samyangfoods.co	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.5.41.0/24	AS23587	Korea Credit Bureau	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.7.252.0/24	AS23554	Shinhan Bank	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.7.254.0/24	AS23555	Shinhan Bank	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.7.255.0/24	AS23555	Shinhan Bank	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.8.0.0/13	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.8.0.0/24	AS45377	Jeju Special Self Governing Provincial office of Education	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.8.186.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.8.187.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.8.188.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.8.189.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.8.190.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.8.241.0/24	AS38401	Gyeonggi Provincial Anseong Office of Education	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.10.75.0/24	AS55613	KOREA APPRAISAL BOARD	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.10.244.0/24	AS9776	KOOKMIN BANK	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.11.43.0/24	AS9318	SK Broadband	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.11.56.0/23	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.11.68.0/24	AS10185	Hana Bank Co.	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.11.69.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.11.228.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.11.229.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.12.121.0/24	AS38705	KOREA DATA	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.12.136.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.12.137.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.12.138.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.12.139.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.12.171.0/24	AS23554	Shinhan Bank	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.12.182.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.12.188.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.12.223.0/24	AS38395	GwangJuHaNam Office of Education	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.12.227.0/24	AS131817	Hecto Innovation Co., Ltd	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.13.50.0/23	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.13.128.0/24	AS38400	Gyeonggi-do Pyongtaek Office Education	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.13.159.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.13.162.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.14.66.0/24	AS131093	viva republica	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.14.102.0/23	AS46009	YABESK	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.14.104.0/24	AS46009	YABESK	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.14.123.0/24	AS46009	YABESK	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.14.124.0/23	AS46009	YABESK	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.14.124.0/24	AS46009	YABESK	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.14.125.0/24	AS46009	YABESK	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.14.126.0/24	AS46009	YABESK	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.15.10.0/24	AS45399	Hanjin Information Systems Telecommunication Co., Ltd	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.15.30.0/24	AS9526	KOSCOM	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.16.0.0/12	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.16.0.0/13	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.16.50.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.17.3.0/24	AS10188	Songdo Chadwick international School	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.17.186.0/24	AS17567	Airport Railroad Co ltd	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.17.188.0/24	AS17567	Airport Railroad Co ltd	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.18.64.0/19	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.18.87.0/24	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.18.96.0/19	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.18.215.0/24	AS18032	SHINHAN DS	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.18.252.0/24	AS131836	Firstfire Marine Insurance	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.23.228.0/22	AS152232	kt cloud Co., Ltd	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.24.0.0/13	AS4766	KT Corporation (Korea Telecom)	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.25.64.0/24	AS38104	Hyejeon University	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.25.65.0/24	AS38104	Hyejeon University	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.25.66.0/24	AS38104	Hyejeon University	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.25.67.0/24	AS38104	Hyejeon University	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.25.68.0/24	AS38104	Hyejeon University	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.26.6.0/24	AS9782	WooSong University	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.26.7.0/24	AS18029	Daejeon Helath Sciences College	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.26.221.0/24	AS9775	Hannam University	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.26.222.0/24	AS9775	Hannam University	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.26.223.0/24	AS9775	Hannam University	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.27.104.0/24	AS10058	NACUFOK	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.27.163.0/24	AS23552	Korea Nazarene University	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.27.164.0/22	AS23552	Korea Nazarene University	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.27.168.0/24	AS23552	Korea Nazarene University	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.29.21.0/24	AS55615	DOUZONEBIZON	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.29.54.0/24	AS55615	DOUZONEBIZON	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.30.254.0/24	AS55615	DOUZONEBIZON	South Korea	Before monitoring	2026-11-10 12:46	Announcing
59.11.68.0/24	AS198949	Radware	Israel	2026-11-05 18:22	2026-11-05 20:23	Stopped

Change logAll changes

The routes covering this address have had no origin changes since ASNBase started monitoring.

Look up another address

RIR allocation record

Registry: APNIC
Allocated block: 59.0.0.0/11
Country: South Korea
Allocation date: 2004-08-02
Status: allocated

From the RIRs’ delegated statistics files. Shows where the addresses are registered, not where they are used.

How monitoring works

Every 2 hours ASNBase takes the bgp.tools global routing table (prefix → origin ASN) and compares it with the previous one. The detected time is the time of that comparison; the actual change can be up to about 2 hours earlier.
Only routes seen by more than 100 bgp.tools peers are listed as changes; routes with less visibility are only kept in the history.
A new announcement counts only if it is still in the next routing table, and a withdrawal only if the prefix is missing from two tables in a row, so short flaps are ignored.
ASNBase has been monitoring since 2026-10-19. “Before monitoring” under “First seen” means the route was already announced when monitoring started; the earlier date is unknown.
Prefixes first seen during the first day of monitoring do not count as new announcements: most of them were simply missing from the table at the moment monitoring started.
Countries and regions follow the ASN’s registration, not the actual location of the IP addresses.