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
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 8 internet exchanges: MSK-IX Moscow: MSK-IX peering network, PITER-IX Moscow: MSK_PEERING_VLAN, PITER-IX St. Petersburg: SPB_PEERING_VLAN, PITER-IX Tallinn: TLL_PEERING VLAN, PITER-IX Helsinki, PITER-IX Riga: RIX_PEERING_VLAN, PITER-IX Rostov, PITER-IX Frankfurt
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 91.132.104.0/22 | 1.0K |
93.2%
|
Utex-Telecom LLC | RU | Moscow | Moscow |
| 193.41.76.0/22 | 1.0K |
92.9%
|
Utex-Telecom LLC | RU | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS51904 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 |
|---|---|---|
| 91.132.104.0/22 | 35,802 | 2026-08-03 10:49:02 |
| 193.41.76.0/22 | 34,584 | 2026-08-03 10:49:02 |
Frequently Asked Questions
What is AS51904?
AS51904 is an Autonomous System Number assigned to Shchurov Mikhail Yurievich. 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 AS51904 announce?
AS51904 announces 2.0K IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Russia.
Who operates AS51904?
AS51904 is operated by Shchurov Mikhail Yurievich. The organization is based in Russia. You can view all IP ranges and related ASNs on the organization page.
What country is AS51904 registered in?
AS51904 is registered in Russia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
