subnet.im

AS212397User Association of Ukrainian Research and Academic Network URAN

UkraineRegistryRIPE NCC

As of 10th November 2026, AS212397 (User Association of Ukrainian Research…), a network registered in Ukraine with RIPE NCC, originates 1 IPv4 prefix covering 256 addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 59,962nd-largest of the 80,733 networks we see originating IPv4, and the 999th-largest of 1,549 in Ukraine. It is seen behind 5 upstream networks, most often AS12687 (User Association of Ukrainian Research…) and AS62206 (Pitline Ltd), and in front of 3 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

1

IPv6 prefixes

1

IPv4 addresses

256

IPv6 /64s

65.5k

Upstream graph

The networks AS212397 is seen behind, one and two hops out, drawn from real AS paths.

AS212397Toward the internet core
Upstream graph for AS212397: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS212397User Association …This networkAS12687User Association …AS24482SG.GSAS24940Hetzner Online Gm…AS49544i3D.net B.VAS62206Pitline LtdAS9002RETN LimitedAS21320GEANT VerenigingAS38623Metfone (Viettel …AS215859Hetzner Cloud - S…AS3356Lumen (Level 3)AS174Cogent Communicat…AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS212397 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

21

adjacent networks

Upstreams
524%
Peers
1362%
Downstreams
314%

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

Upstreams of AS212397
NetworkCountryRelationshipPathsVantage pts
AS12687User Association of Ukrainian Research and Academic Network URANUAPeer156108
AS62206Pitline LtdUAPeer3822
AS24482SG.GSSGPeer44
AS24940Hetzner Online GmbHDEPeer22
AS49544i3D.net B.VNLPeer22

Prefixes

The largest blocks AS212397 originates, widest first.

Largest prefixes originated by AS212397
PrefixAddressesVisibility
212.111.199.0/2425676/76
2a01:5c40:6::/4865.5k × /6462/63

Routing health

How AS212397'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

  • Valid100.0%2
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%2
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS212397 started or stopped in this period.

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