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
- Trust score 53 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About RETN
RETN Networks Limited is a British internet service providing company headquartered in London, United Kingdom. Founded in 2003, RETN operates a high-capacity backbone network that spans over 140,000 kilometres with more than 970 Points of Presence across Europe, Asia, and the United States.
⚠ 1 MOAS prefix — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS57304 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) |
|---|---|---|
| 81.27.248.0/24 | AS20764, AS57304 | 2026-09-10 15:55:47 |
Network profile
Source: PeeringDB →Present at 4 internet exchanges: Netnod Stockholm GREEN -- MTU1500: STH-A -- MTU1500, Netnod Stockholm BLUE -- MTU1500: STH-B -- MTU1500, DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN, AMS-IX
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 87.245.192.0/20 | 4.1K |
18.6%
|
JSC RetnNet | RU | Moscow | Moscow |
| 139.45.224.0/20 | 4.1K |
32.6%
|
JSC RetnNet | RU | — | — |
| 139.45.240.0/21 | 2.0K |
34.9%
|
JSC RetnNet | RU | — | — |
| 185.134.72.0/22 | 1.0K |
0.0%
|
JSC RetnNet | RU | — | — |
| 46.8.177.0/24 | 256 |
0.0%
|
K2 Integration JSC | CZ | — | — |
| 81.27.248.0/24 | 256 |
93.4%
|
JSC RetnNet | RU | — | — |
| 109.248.196.0/24 | 256 |
1.2%
|
JSC RetnNet | CZ | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS57304 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 |
|---|---|---|
| 109.248.196.0/24 | 10,562 | 2026-09-11 07:25:59 |
| 139.45.224.0/19 | 9,704 | 2026-09-11 07:25:59 |
| 87.245.192.0/20 | 9,638 | 2026-09-11 07:25:59 |
| 185.134.72.0/22 | 9,432 | 2026-09-11 07:25:59 |
| 81.27.248.0/24 | 6,779 | 2026-09-11 07:25:59 |
| 46.8.177.0/24 | 6,279 | 2026-09-11 07:25:59 |
| 91.199.16.0/24 | 2,917 | 2026-08-27 10:52:08 |
| 185.22.182.6/32 | 6 | 2026-08-09 14:22:35 |
| 185.22.183.6/32 | 6 | 2026-08-09 14:22:35 |
Frequently Asked Questions
What is AS57304?
AS57304 is an Autonomous System Number assigned to JSC RetnNet. 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 AS57304 announce?
AS57304 announces 12.0K IPv4 addresses distributed across 7 routed CIDR prefixes. The network is registered in Russia.
Who operates AS57304?
AS57304 is operated by JSC RetnNet. The organization is based in Russia. You can view all IP ranges and related ASNs on the organization page.
What country is AS57304 registered in?
AS57304 is registered in Russia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
