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Autonomous System

AS197251

Fop Tereshchenko Oleksandr Trohumovich

Announced IPs
512
CIDR prefixes
1
ASN
AS197251

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.

65/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
91.217.58.0/23 512
91.0%
Fop Tereshchenko Oleksandr Trohumovich UA Zaporizhzhia Zaporizhzhya

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS197251 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
91.217.58.0/23 5,595 2026-07-31 03:33:53
91.217.58.0/24 5,070 2026-07-31 03:25:32
91.217.59.0/24 5,067 2026-07-31 03:25:32

Frequently Asked Questions

What is AS197251?

AS197251 is an Autonomous System Number assigned to Fop Tereshchenko Oleksandr Trohumovich. 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 AS197251 announce?

AS197251 announces 512 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Ukraine.

Who operates AS197251?

AS197251 is operated by Fop Tereshchenko Oleksandr Trohumovich. The organization is based in Ukraine. You can view all IP ranges and related ASNs on the organization page.

What country is AS197251 registered in?

AS197251 is registered in Ukraine. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-31 03:40:32 UTC
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