Data as of Nov 10, 2026
Autonomous system

AS23600

Korea Internet Security Agency

Announces 3,072 addresses in 12 prefixes. None of it is anonymizer space.

Type
Business
KR

Announced prefixes

Arrived
PrefixTypeHolderRPKI
1.18.132.0/24
since Sep 2019
Business
1.18.133.0/24
since Oct 2017
Business
1.18.134.0/24
since May 2013
Business
39.127.249.0/24
since Jan 2019
BusinessSK Broadband Co Ltd
58.235.102.0/24
since Mar 2023
BusinessSK Broadband Co Ltd
202.30.45.0/24
since Sep 2019
Business
202.31.188.0/24
since Sep 2019
Business
202.31.190.0/24
since May 2005
Business
203.83.158.0/24
since Dec 2020
Business
219.251.142.0/24
since Dec 2016
BusinessSK Broadband Co Ltd
219.251.156.0/24
since Dec 2016
BusinessSK Broadband Co Ltd
221.139.191.0/24
since Dec 2016
BusinessSK Broadband Co Ltd

Network & history

Routing patterns

How its announcements have moved

Arrivals

Year each prefix's current origin began announcing it