Autonomous system
AS23634 E-DNS-JP WIDE Project
Unclassified ARIN
Summary
WIDE Project
dns research nonprofit infrastructure
The AS handle E-DNS-JP is held by the WIDE Project.
What it's used for
- The space carries the M-Root DNS Server infrastructure, a major component of the global DNS root zone, as indicated by the netname
WIDE-4-CIDR-BLK-JPand secondary sources describing its operation of M-Root instances. - The AS announces 256 IPv4 addresses and 1 IPv6 prefix, with 5 observed neighbours, indicating a specialized infrastructure role rather than a transit or access provider.
Notable
- The registrant for the announced prefix is the Japan Network Information Center (JPNIC), which is consistent with the WIDE Project's role as a Japanese research and infrastructure organization.
- The WIDE Project is a long-standing Japanese Internet research initiative founded by Keio University, Tokyo Institute of Technology, and The University of Tokyo, known for its contributions to Internet infrastructure and the operation of the M-Root DNS Server.
- The address inventory consists of a single /24 IPv4 block and one /35 IPv6 prefix, reflecting a focused allocation for specific infrastructure services.
CLASSIFICATION - after the card, on its own final line, emit exactly:
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 · 256 addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS23634- Registry name
- E-DNS-JP
- Registered
- 2003-01-31
- Last changed
- 2006-11-14
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 50% valid · 1 valid, 1 with no ROA
- ROAs
- 1 authorising AS23634
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 3 naming AS23634
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