asn.dev

Autonomous system

AS46757 SHARCNET

Unclassified ARIN

IPv4 addresses 2.05K 1 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly CA
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

SHARCNET

Canada · AI-generated

education hpc research consortium

SHARCNET is operated by SHARCNET, a consortium of universities and colleges in Ontario, Canada.

What it's used for

  • The address space carries high-performance computing (HPC) and research infrastructure, as indicated by the netname SHARCNET and the registrant Sharcnet.
  • The AS announces 2048 IPv4 addresses within a single /21 prefix (199.241.160.0/21) and one IPv6 prefix (2620:123:7000::/44), with only 1 observed neighbour, indicating a dedicated, non-transit network for internal research use.
  • Traffic from this AS consists of academic researchers and students accessing shared supercomputer systems and computational resources provided by the consortium.

Notable

  • The RDAP registrant Sharcnet matches the AS handle SHARCNET, confirming consistent ownership.
  • SHARCNET is one of seven HPC consortia in Canada operating under the umbrella of Compute Canada, aggregating funding from member institutions to purchase and share supercomputing resources.
  • The inventory consists of a single contiguous IPv4 block and a single IPv6 prefix, typical of a dedicated research network rather than a commercial ISP.

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

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

ASNetworkPaths seen
AS26677ORION99

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, 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 1 prefixes · 2.05K addresses IPv6 1 prefixes

CountryNamePrefixes
CACanada2

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS46757
Registry name
SHARCNET
Registrant
Sharcnet
Abuse contact
noc@sharcnet.ca
Registered
2011-04-26
Last changed
2012-03-02
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
2 authorising AS46757
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
4 naming AS46757

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

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: 442 networks and 1,783 prefixes, as published 2026-10-17. 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