Autonomous system
AS63783 CUC Chiba University of Commerce
Unclassified ARIN
Summary
Chiba University of Commerce
education university japan
CUC is the autonomous system for Chiba University of Commerce.
What it's used for
- The space carries the university's internal network, identified by the netname
INFOCITY-CUC-CIDR-BLK-JP. - The AS announces 2048 IPv4 addresses across 1 prefix with 2 observed neighbours, indicating a small, self-contained institutional network rather than a transit or large-scale access provider.
- Traffic from this AS consists of academic and administrative users, including students and faculty, accessing the internet for research, instruction, and campus operations.
Notable
- The RDAP registrant is listed as Japan Network Information Center (JPNIC), which is the standard registry for Japanese IP space, while the AS holder is Chiba University of Commerce.
- The address inventory consists of a single /21 block, which is a typical size for a mid-sized university campus network in Japan.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 · 2.05K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS63783- Registry name
- CUC
- Registered
- 2014-08-25
- Last changed
- 2020-03-06
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 3 with no ROA
- ROAs
- 0 authorising AS63783
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 3 announcements 1 other origin
- Route objects
- 0 naming AS63783
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 1,772 prefixes, as published 2026-10-15. 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