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
- Multiple-origin (MOAS) routing anomaly −12
- Isp allocation +5
- Trust score 58 / 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.
⚠ 1 MOAS prefix — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS4040 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 14.49.22.0/24 | AS4040, AS4766 | 2026-07-24 14:38:49 |
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 14.49.22.0/24 | 256 |
0.0%
|
Korea Telecom | KR | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS4040 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 |
|---|---|---|
| 14.49.22.0/24 | 748 | 2026-07-24 13:14:18 |
Frequently Asked Questions
What is AS4040?
AS4040 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 AS4040 announce?
AS4040 announces 256 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in South Korea.
Who operates AS4040?
AS4040 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 AS4040 registered in?
AS4040 is registered in South Korea. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
