asn.dev

Autonomous system

AS2643 IHEP-SU IHEP-SU AS

Education RIPE

IPv4 addresses 4.61K 4 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly EU
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Institute for High Energy Physics (IHEP), Protvino

Russia · AI-generated

education research legacy

IHEP-SU is the network of the Institute for High Energy Physics (IHEP) in Protvino, Russia, a particle-physics research centre now part of the Kurchatov Institute.

What it's used for

  • Networking for a particle-physics research institution.

Notable

  • A research-institute network, not a commercial ISP or host. The -SU suffix is a legacy of its Soviet-era .su registration, and the low AS number reflects an early allocation.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS59624National Research Center "Kurchatov Institute"190
AS50804Bestline Ltd88

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 4 prefixes · 4.61K addresses IPv6 1 prefixes

CountryNamePrefixes
EU5

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS2643
Registry name
IHEP-SU
Registrant
AS2643-MNT
Abuse contact
noc@ihep.su
Registered
2002-04-11
Last changed
2026-09-25
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
40% valid · 2 valid, 3 with no ROA
ROAs
2 authorising AS2643
ASPA
no ASPA record
IRR
100% registered · 5 of 5 announcements
Route objects
5 naming AS2643

Reputation

Classification and threat

Education University, school or national research and education network.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 443 networks and 1,784 prefixes, as published 2026-10-19. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check