Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Isp allocation +5
- Trust score 70 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About KT Corporation
KT Corporation, formerly Korea Telecom, is a South Korean telecommunications company, mobile network operator (MNO) and mobile virtual network operator (MVNO). KT is the large wireless carrier in South Korea, with 13.5 million subscribers as of Q4 2023.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS45400 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 210.204.226.0/24 | 22,068 | 2026-09-15 09:53:04 |
| 210.211.1.0/24 | 21,839 | 2026-09-15 09:53:06 |
| 210.96.121.0/24 | 20,029 | 2026-09-15 09:53:06 |
| 210.99.159.0/24 | 19,879 | 2026-09-15 09:53:06 |
| 210.103.115.0/24 | 19,765 | 2026-09-15 09:53:06 |
| 210.99.158.0/24 | 19,669 | 2026-09-15 09:53:06 |
| 210.99.168.0/24 | 19,616 | 2026-09-15 09:53:06 |
| 210.211.15.0/24 | 18,746 | 2026-09-15 09:53:06 |
| 211.236.106.0/24 | 18,634 | 2026-09-15 09:53:06 |
| 180.92.248.0/24 | 17,018 | 2026-09-15 09:53:06 |
| 180.92.241.0/24 | 17,015 | 2026-09-15 09:53:06 |
| 211.236.123.0/24 | 17,009 | 2026-09-15 09:53:06 |
| 180.92.251.0/24 | 16,997 | 2026-09-15 09:53:06 |
| 203.254.123.0/24 | 16,990 | 2026-09-15 09:53:06 |
| 211.43.142.0/24 | 16,851 | 2026-09-15 09:53:06 |
| 211.236.124.0/24 | 16,811 | 2026-09-15 09:53:06 |
| 221.145.178.0/24 | 16,773 | 2026-09-15 09:53:06 |
| 210.90.214.0/24 | 16,627 | 2026-09-15 09:53:06 |
| 210.104.20.0/24 | 16,579 | 2026-09-15 09:53:06 |
| 210.104.123.0/24 | 16,493 | 2026-09-15 09:53:06 |
| 210.104.22.0/24 | 16,468 | 2026-09-15 09:53:06 |
| 210.90.82.0/24 | 16,451 | 2026-09-15 09:53:06 |
| 210.90.6.0/24 | 16,439 | 2026-09-15 09:53:06 |
| 210.96.84.0/24 | 16,435 | 2026-09-15 09:53:06 |
| 211.114.101.0/24 | 16,416 | 2026-09-15 09:53:06 |
| 210.178.187.0/24 | 16,410 | 2026-09-15 09:53:06 |
| 210.104.12.0/24 | 16,410 | 2026-09-15 09:53:06 |
| 210.100.136.0/24 | 16,392 | 2026-09-15 09:53:06 |
| 210.104.11.0/24 | 16,391 | 2026-09-15 09:53:06 |
| 210.179.159.0/24 | 16,386 | 2026-09-15 09:53:06 |
| 210.104.13.0/24 | 16,383 | 2026-09-15 09:53:06 |
| 210.104.15.0/24 | 16,376 | 2026-09-15 09:53:06 |
| 210.104.8.0/24 | 16,359 | 2026-09-15 09:53:06 |
| 210.97.6.0/24 | 16,354 | 2026-09-15 09:53:06 |
| 211.57.43.0/24 | 16,353 | 2026-09-15 09:53:06 |
| 210.104.14.0/24 | 16,353 | 2026-09-15 09:53:06 |
| 210.104.10.0/24 | 16,351 | 2026-09-15 09:53:06 |
| 210.99.10.0/24 | 16,351 | 2026-09-15 09:53:06 |
| 210.90.191.0/24 | 16,350 | 2026-09-15 09:53:06 |
| 211.34.147.0/24 | 16,342 | 2026-09-15 09:53:06 |
| 210.104.27.0/24 | 16,333 | 2026-09-15 09:53:06 |
| 210.95.12.0/24 | 16,332 | 2026-09-15 09:53:06 |
| 210.104.237.0/24 | 16,332 | 2026-09-15 09:53:06 |
| 210.104.9.0/24 | 16,329 | 2026-09-15 09:53:06 |
| 211.252.223.0/24 | 16,305 | 2026-09-15 09:53:06 |
| 211.114.15.0/24 | 16,295 | 2026-09-15 09:53:06 |
| 210.179.87.0/24 | 16,268 | 2026-09-15 09:53:06 |
| 210.204.227.0/24 | 16,251 | 2026-09-15 09:53:06 |
| 211.252.239.0/24 | 16,237 | 2026-09-15 09:53:06 |
| 210.179.141.0/24 | 16,235 | 2026-09-15 09:53:06 |
Showing top 50 of 486 announced prefixes by sample volume.
Frequently Asked Questions
What is AS45400?
AS45400 is an Autonomous System Number assigned to Korea Telecom. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS45400 announce?
AS45400 announces 25.9K IPv4 addresses distributed across 84 routed CIDR prefixes. The network is registered in South Korea.
Who operates AS45400?
AS45400 is operated by Korea Telecom. The organization is based in South Korea. You can view all IP ranges and related ASNs on the organization page.
What country is AS45400 registered in?
AS45400 is registered in South Korea. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
