subnet.im

AS197251FOP TERESHCHENKO OLEKSANDR TROHUMOVICH

UkraineRegistryRIPE NCC

As of 23rd October 2026, AS197251 (FOP TERESHCHENKO OLEKSANDR TROHUMOVICH), a network registered in Ukraine with RIPE NCC, originates 3 IPv4 prefixes covering 1k addresses. By IPv4 address space that makes it the 35,840th-largest of the 79,659 networks we see originating IPv4, and the 537th-largest of 1,521 in Ukraine. It is seen behind 8 upstream networks, most often AS51528 (KOZOBROD ANDRIY ANATOLIYOVICH) and AS6939 (Hurricane Electric LLC), and in front of 1 downstream network. None of its announcements have a valid RPKI ROA. 0% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

3

IPv6 prefixes

0

IPv4 addresses

1k

IPv6 /64s

0

Upstream graph

The networks AS197251 is seen behind, one and two hops out, drawn from real AS paths.

AS197251Toward the internet core
Upstream graph for AS197251: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS197251FOP TERESHCHENKO …This networkAS6939Hurricane Electri…AS24482SG.GSAS24940Hetzner Online Gm…AS50581Ukrainian Telecom…AS51528KOZOBROD ANDRIY A…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS38623Metfone (Viettel …AS215859Hetzner Cloud - S…AS2914NTT America, Inc.AS5405Inter.link GmbHAS9002RETN Limited

Networks observed one and two hops upstream of AS197251 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

31

adjacent networks

Upstreams
826%
Peers
2271%
Downstreams
13%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS197251
NetworkCountryRelationshipPathsVantage pts
AS51528KOZOBROD ANDRIY ANATOLIYOVICHUAPeer5048
AS6939Hurricane Electric LLCUSPeer239
AS50581Ukrainian Telecommunication Group LLCUAPeer1919
AS24482SG.GSSGPeer93
AS24940Hetzner Online GmbHDEPeer31
AS132337AxclusiveSGPeer31
AS22356Durand do Brasil LtdaBRPeer21
AS262355VSX NetworksBRPeer21

Prefixes

The largest blocks AS197251 originates, widest first.

Largest prefixes originated by AS197251
PrefixAddressesVisibility
91.217.58.0/2351258/77
91.217.58.0/2425617/77
91.217.59.0/2425617/77

Routing health

How AS197251's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%3

Propagation

  • Globally propagated90% of full-feed peers or more0.0%0
  • Partially propagated40% to 90%33.3%1
  • Seen by few peersUnder 40%66.7%2

Prefix sizes

IPv4 — 3 prefixes

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS197251 started or stopped in this period.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.