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
- Trust score 53 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 1 MOAS prefix — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS210937 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.
Network profile
Source: PeeringDB →Present at 2 internet exchanges: DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN, LOCIX FRANKFURT: Peering LAN
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 46.175.133.0/24 | 256 |
0.0%
|
Xiufeng Guo | DE | — | — |
| 141.11.11.0/24 | 256 |
0.0%
|
Xiufeng Guo | FR | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS210937 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 |
|---|---|---|
| 46.175.133.0/24 | 8,721 | 2026-07-23 20:54:38 |
| 141.11.11.0/24 | 8,695 | 2026-07-23 20:54:38 |
| 45.143.0.0/24 | 2 | 2026-07-07 21:09:46 |
| 0.0.0.0/0 | 2 | 2026-06-20 22:16:10 |
Frequently Asked Questions
What is AS210937?
AS210937 is an Autonomous System Number assigned to Xiufeng Guo. 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 AS210937 announce?
AS210937 announces 512 IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Germany.
Who operates AS210937?
AS210937 is operated by Xiufeng Guo. The organization is based in Germany. You can view all IP ranges and related ASNs on the organization page.
What country is AS210937 registered in?
AS210937 is registered in Germany. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
