AS3351
Ioffe Physical-Technical Institute of the Russian Academy of Sciences
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
- Academic allocation +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 194.85.224.0/21 | 2.0K |
50.2%
|
Ioffe Physical-Technical Institute of the Russian Academy of Sciences | RU | — | — |
| 194.85.236.0/23 | 512 |
20.3%
|
Ioffe Physical-Technical Institute of the Russian Academy of Sciences | RU | — | — |
| 194.85.238.0/24 | 256 |
3.5%
|
Ioffe Physical-Technical Institute of the Russian Academy of Sciences | RU | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS3351 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 |
|---|---|---|
| 194.85.224.0/21 | 21,622 | 2026-08-02 11:43:12 |
| 194.85.238.0/24 | 21,609 | 2026-08-02 11:43:09 |
| 194.85.236.0/23 | 20,498 | 2026-08-02 11:43:09 |
Frequently Asked Questions
What is AS3351?
AS3351 is an Autonomous System Number assigned to Ioffe Physical-Technical Institute of the Russian Academy of Sciences. 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 AS3351 announce?
AS3351 announces 2.8K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in Russia.
Who operates AS3351?
AS3351 is operated by Ioffe Physical-Technical Institute of the Russian Academy of Sciences. The organization is based in Russia. You can view all IP ranges and related ASNs on the organization page.
What country is AS3351 registered in?
AS3351 is registered in Russia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
