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
- Active-threat / abuse risk −12
- Isp allocation +5
- Trust score 58 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 45 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS138421 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) |
|---|---|---|
| 103.222.43.0/24 | AS4812, AS59048, AS138421 | 2026-10-10 15:43:27 |
| 116.198.144.0/20 | AS4811, AS138421 | 2026-10-10 15:43:27 |
| 122.9.176.0/20 | AS4812, AS138421 | 2026-10-10 15:43:27 |
| 116.63.96.0/20 | AS4811, AS138421 | 2026-10-10 15:43:27 |
| 139.159.110.0/24 | AS4811, AS138421 | 2026-10-10 15:43:27 |
| 43.254.46.0/23 | AS4811, AS138421 | 2026-10-10 15:43:27 |
| 116.198.160.0/21 | AS4811, AS138421 | 2026-10-10 15:43:27 |
| 116.196.192.0/21 | AS4811, AS138421 | 2026-10-10 15:43:27 |
| 116.63.32.0/19 | AS4811, AS138421 | 2026-10-10 15:43:27 |
| 210.51.45.0/24 | AS9929, AS138421 | 2026-10-10 15:43:27 |
| 116.63.192.0/18 | AS4811, AS138421 | 2026-10-10 15:43:27 |
| 122.9.64.0/19 | AS4811, AS138421 | 2026-10-10 15:43:27 |
| 116.198.180.0/22 | AS4811, AS138421 | 2026-10-10 15:43:27 |
| 43.254.44.0/23 | AS4811, AS138421 | 2026-10-10 15:43:27 |
| 116.63.112.0/21 | AS4811, AS138421 | 2026-10-10 15:43:27 |
Showing the 15 most recently detected of 45 MOAS prefixes. Many multi-origin prefixes on large networks are benign (anycast); see all MOAS anomalies.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS138421 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 |
|---|---|---|
| 1.1.8.0/24 | 50,892 | 2026-10-10 14:55:28 |
| 210.51.56.0/23 | 27,681 | 2026-10-10 14:20:21 |
| 43.240.125.0/24 | 20,548 | 2026-10-10 14:20:21 |
| 45.253.27.0/24 | 18,791 | 2026-10-10 14:20:21 |
| 45.253.26.0/24 | 18,723 | 2026-10-10 14:20:21 |
| 43.240.130.0/23 | 18,715 | 2026-10-10 14:20:21 |
| 220.196.90.0/24 | 18,683 | 2026-10-10 14:20:21 |
| 43.254.104.0/24 | 18,675 | 2026-10-10 14:20:21 |
| 43.240.128.0/23 | 18,644 | 2026-10-10 14:20:21 |
| 43.254.144.0/24 | 18,587 | 2026-10-10 14:20:21 |
| 43.254.146.0/24 | 18,560 | 2026-10-10 14:20:21 |
| 43.254.105.0/24 | 18,555 | 2026-10-10 14:20:21 |
| 43.254.145.0/24 | 18,532 | 2026-10-10 14:20:21 |
| 43.254.147.0/24 | 18,531 | 2026-10-10 14:20:21 |
| 103.36.174.0/23 | 18,413 | 2026-10-10 14:20:21 |
| 43.254.148.0/22 | 18,250 | 2026-10-10 14:20:21 |
| 223.167.85.0/24 | 18,203 | 2026-10-10 14:20:21 |
| 45.253.24.0/24 | 18,094 | 2026-10-10 14:20:21 |
| 58.246.207.0/24 | 18,058 | 2026-10-10 14:20:21 |
| 45.253.25.0/24 | 18,054 | 2026-10-10 14:20:21 |
| 210.51.61.0/24 | 18,021 | 2026-10-10 14:20:21 |
| 58.246.165.0/24 | 17,996 | 2026-10-10 14:20:21 |
| 112.64.33.0/24 | 17,979 | 2026-10-10 14:20:21 |
| 112.64.35.0/24 | 17,969 | 2026-10-10 14:20:21 |
| 210.51.27.0/24 | 17,969 | 2026-10-10 14:20:21 |
| 112.64.34.0/24 | 17,966 | 2026-10-10 14:20:21 |
| 112.64.212.0/22 | 17,966 | 2026-10-10 14:20:21 |
| 58.247.254.0/23 | 17,952 | 2026-10-10 14:20:21 |
| 211.95.75.0/24 | 17,945 | 2026-10-10 14:20:21 |
| 112.64.112.0/22 | 17,944 | 2026-10-10 14:20:21 |
| 112.64.32.0/24 | 17,928 | 2026-10-10 14:20:21 |
| 220.196.53.0/24 | 17,897 | 2026-10-10 14:20:21 |
| 112.65.228.0/22 | 17,896 | 2026-10-10 14:20:21 |
| 220.196.58.0/24 | 17,891 | 2026-10-10 14:20:21 |
| 211.95.76.0/24 | 17,889 | 2026-10-10 14:20:21 |
| 223.167.111.0/24 | 17,879 | 2026-10-10 14:20:21 |
| 223.167.110.0/24 | 17,877 | 2026-10-10 14:20:21 |
| 112.65.64.0/24 | 17,835 | 2026-10-10 14:20:21 |
| 210.51.54.0/23 | 17,824 | 2026-10-10 14:20:21 |
| 140.207.244.0/23 | 17,788 | 2026-10-10 14:20:21 |
| 210.51.59.0/24 | 17,775 | 2026-10-10 14:20:21 |
| 210.51.40.0/24 | 17,766 | 2026-10-10 14:20:21 |
| 210.52.212.0/24 | 17,764 | 2026-10-10 14:20:21 |
| 210.51.53.0/24 | 17,754 | 2026-10-10 14:20:21 |
| 210.51.52.0/24 | 17,751 | 2026-10-10 14:20:21 |
| 210.51.26.0/24 | 17,742 | 2026-10-10 14:20:21 |
| 210.51.46.0/24 | 17,740 | 2026-10-10 14:20:21 |
| 220.196.91.0/24 | 17,739 | 2026-10-10 14:20:21 |
| 140.207.245.0/24 | 17,736 | 2026-10-10 14:20:21 |
| 210.51.25.0/24 | 17,730 | 2026-10-10 14:20:21 |
Showing top 50 of 255 announced prefixes by sample volume.
Frequently Asked Questions
What is AS138421?
AS138421 is an Autonomous System Number assigned to China Unicom. 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 AS138421 announce?
AS138421 announces 164.1K IPv4 addresses distributed across 140 routed CIDR prefixes. The network is registered in China.
Who operates AS138421?
AS138421 is operated by China Unicom. The organization is based in China. You can view all IP ranges and related ASNs on the organization page.
What country is AS138421 registered in?
AS138421 is registered in China. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
