subnet.im

AS34837Institute for Research in Fundamental Sciences

IranRegistryRIPE NCC

As of 10th November 2026, AS34837 (Institute for Research in Fundamental…), a network registered in Iran with RIPE NCC, originates 21 IPv4 prefixes covering 5.6k addresses. By IPv4 address space that makes it the 14,968th-largest of the 80,733 networks we see originating IPv4, and the 84th-largest of 583 in Iran. It is seen behind 2 upstream networks, most often AS6736 (Institute for Research in Fundamental…) and AS42337 (Respina Networks & Beyond PJSC), and in front of 9 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

21

IPv6 prefixes

0

IPv4 addresses

5.6k

IPv6 /64s

0

Upstream graph

The networks AS34837 is seen behind, one and two hops out, drawn from real AS paths.

AS34837Toward the internet core
Upstream graph for AS34837: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS34837Institute for Res…This networkAS6736Institute for Res…AS42337Respina Networks …AS39533Asympto Networks …AS12880Iran Information …AS49666Telecommunication…

Networks observed one and two hops upstream of AS34837 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

22

adjacent networks

Upstreams
29%
Peers
1150%
Downstreams
941%

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

Upstreams of AS34837
NetworkCountryRelationshipPathsVantage pts
AS6736Institute for Research in Fundamental SciencesIRPeer2,95276
AS42337Respina Networks & Beyond PJSCIRPeer5226

Prefixes

The largest blocks AS34837 originates, widest first.

Largest prefixes originated by AS34837
PrefixAddressesVisibility
194.225.130.0/2351276/76
46.38.129.0/2425676/76
46.38.131.0/2425676/76
79.127.65.0/2425676/76
193.104.212.0/2425676/76
212.16.64.0/2425676/76
212.16.65.0/2425676/76
212.16.67.0/2425676/76
212.16.68.0/2425676/76
212.16.75.0/2425676/76

Routing health

How AS34837'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%21
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%21
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 21 prefixes

Recent changes

Announcements that started or stopped since 11th Oct 2026.

  • Withdrawn194.225.0.0/164th Nov 2026
  • Withdrawn194.225.0.0/174th Nov 2026
  • Withdrawn194.225.128.0/174th Nov 2026
  • Withdrawn194.225.144.0/244th Nov 2026
  • Withdrawn194.225.150.0/244th Nov 2026
  • Withdrawn194.225.151.0/244th Nov 2026
  • Withdrawn212.16.72.0/244th Nov 2026
  • Withdrawn94.184.128.0/174th Nov 2026
  • Withdrawn94.184.128.0/184th Nov 2026
  • Withdrawn94.184.192.0/184th Nov 2026
  • Withdrawn94.184.64.0/184th Nov 2026
  • Withdrawn94.184.64.0/194th Nov 2026

38 announced and 36 withdrawn in all; the most recent are shown.

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