Autonomous system
AS212034 ZEZHU-YU-AS Zezhu Yu
Unclassified RIPE
Summary
Sam Research Network
research academic small
The AS handle sclrnet.com research net is held by Zezhu Yu.
What it's used for
- The space carries research network traffic, identified by the netname
NET-155-103-250-0-ZY-6and the registrant Zezhu Yu. - The inventory consists of 256 IPv4 addresses and 8 IPv6 prefixes, with 9 observed neighbours, indicating a small-scale research or academic network rather than a transit provider.
- Traffic from this AS is associated with academic research activities, specifically related to the Sam Research Network (sclrnet.com).
Notable
- The registrant Zezhu Yu matches the AS holder, confirming consistent ownership of the address space.
- The address inventory is small and finely subdivided, consistent with an internal research estate 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
Internet exchanges
Recorded at 3 exchanges in 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| KleyReX Internet Exchange | Frankfurt, Germany | 193.189.83.200 |
| Ontario Internet Exchange | Toronto, Canada | 2001:504:125:e1::bbb |
| UNMETERED Exchange | Vancouver, Canada | 192.34.27.71 |
Transit providers
7 upstream, 0 downstream and 8 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-02, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 256 addresses IPv6 8 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CA | Canada | 9 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS212034- Registry name
- ZEZHU-YU-AS
- Registrant
- MNT-HOSTUS
- Abuse contact
- abuse@sclrnet.com
- Registered
- 2021-01-11
- Last changed
- 2021-08-27
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 91% valid · 10 valid, 1 with no ROA
- ROAs
- 4 authorising AS212034
- ASPA
- no ASPA record
- IRR
- 100% registered · 11 of 11 announcements
- Route objects
- 59 naming AS212034
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: 449 networks and 1,846 prefixes, as published 2026-11-03. 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