subnet.im

AS25500User Association of Ukrainian Research and Academic Network URAN

UkraineRegistryRIPE NCCTypeEyeball

As of 11th November 2026, AS25500 (User Association of Ukrainian Research…), an access network registered in Ukraine with RIPE NCC, originates 12 IPv4 prefixes covering 21.8k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 6,817th-largest of the 80,743 networks we see originating IPv4, and the 58th-largest of 1,549 in Ukraine. It is seen behind 4 upstream networks, most often AS12687 (User Association of Ukrainian Research…) and AS3326 (Datagroup PJSC). 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

12

IPv6 prefixes

1

IPv4 addresses

21.8k

IPv6 /64s

4.3B

Upstream graph

The networks AS25500 is seen behind, one and two hops out, drawn from real AS paths.

AS25500Toward the internet core
Upstream graph for AS25500: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS25500User Association …This networkAS3326Datagroup PJSCAS6939Hurricane Electri…AS12687User Association …AS49544i3D.net B.VAS1299Arelion (fka. Tel…AS9002RETN LimitedAS20130Depaul UniversityAS132337AxclusiveAS21320GEANT VerenigingAS2914NTT America, Inc.AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS25500 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

12

adjacent networks

Upstreams
433%
Peers
867%
Downstreams
00%

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

Upstreams of AS25500
NetworkCountryRelationshipPathsVantage pts
AS12687User Association of Ukrainian Research and Academic Network URANUAPeer70062
AS3326Datagroup PJSCUAPeer21572
AS6939Hurricane Electric LLCUSPeer484
AS49544i3D.net B.VNLPeer121

Prefixes

The largest blocks AS25500 originates, widest first.

Largest prefixes originated by AS25500
PrefixAddressesVisibility
77.47.160.0/204.1k76/76
77.47.192.0/204.1k76/76
77.47.224.0/204.1k76/76
77.47.128.0/212k76/76
77.47.184.0/212k76/76
77.47.216.0/212k76/76
77.47.136.0/221k76/76
77.47.140.0/2351276/76
77.47.176.0/2351276/76
77.47.208.0/2351276/76

Routing health

How AS25500'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%13
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%13
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 12 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS25500 started or stopped in this period.

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