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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
About SK Broadband
SK Broadband, Inc. is a Seoul-based telecommunications company and a wholly owned subsidiary of SK Telecom.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 123.254.128.0/17 | 32.8K |
0.0%
|
SK Broadband Co Ltd | KR | Seoul | Seoul |
| 112.212.128.0/18 | 16.4K |
0.0%
|
SK Broadband Co Ltd | KR | Seoul | Gwangjin-gu |
| 115.161.128.0/18 | 16.4K |
0.0%
|
SK Broadband Co Ltd | KR | Seoul | Gwangjin-gu |
| 123.109.128.0/18 | 16.4K |
0.0%
|
SK Broadband Co Ltd | KR | Seoul | Gwangjin-gu |
| 223.131.128.0/19 | 8.2K |
0.0%
|
SK Broadband Co Ltd | KR | Seoul | Seoul |
| 223.131.160.0/20 | 4.1K |
0.0%
|
SK Broadband Co Ltd | KR | — | — |
| 223.131.176.0/21 | 2.0K |
0.0%
|
SK Broadband Co Ltd | KR | — | — |
| 223.131.184.0/22 | 1.0K |
0.0%
|
SK Broadband Co Ltd | KR | — | — |
| 203.229.35.0/24 | 256 |
0.0%
|
SK Broadband Co Ltd | KR | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS38103 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 |
|---|---|---|
| 223.131.160.0/20 | 5,155 | 2026-07-18 12:15:48 |
| 223.131.187.0/24 | 5,142 | 2026-07-18 12:15:48 |
| 223.131.176.0/21 | 5,141 | 2026-07-18 12:15:48 |
| 203.229.35.0/24 | 5,139 | 2026-07-18 12:15:48 |
| 223.131.128.0/18 | 5,135 | 2026-07-18 12:15:48 |
| 223.131.186.0/24 | 5,131 | 2026-07-18 12:15:48 |
| 123.254.192.0/18 | 5,095 | 2026-07-18 12:15:48 |
| 123.254.128.0/18 | 5,093 | 2026-07-18 12:15:47 |
| 112.212.128.0/18 | 5,090 | 2026-07-18 12:15:48 |
| 123.109.128.0/18 | 5,089 | 2026-07-18 12:15:48 |
| 115.161.128.0/18 | 5,081 | 2026-07-18 12:15:48 |
Frequently Asked Questions
What is AS38103?
AS38103 is an Autonomous System Number assigned to SK Broadband Co Ltd. 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 AS38103 announce?
AS38103 announces 97.5K IPv4 addresses distributed across 9 routed CIDR prefixes. The network is registered in South Korea.
Who operates AS38103?
AS38103 is operated by SK Broadband Co Ltd. The organization is based in South Korea. You can view all IP ranges and related ASNs on the organization page.
What country is AS38103 registered in?
AS38103 is registered in South Korea. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
