asn.dev

Autonomous system

AS55387 RMGR-MIX Japan Communication Inc.

Unclassified RIPE Cable/DSL/ISP

IPv4 addresses 49.15K 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly JP
Exchanges 1 recorded by PCH
Upstreams 6 0 downstream
Flagged prefixes 0 none

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
BroadBand Internet eXchange TokyoTokyo, Japan101.203.90.142

Transit providers

6 upstream, 0 downstream and 6 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS2497Internet Initiative Japan Inc.74
AS6939Hurricane Electric LLC18
AS10010TOKAI Communications Corporation16
AS17676SoftBank Corp.8
AS9002RETN Limited2
AS24482SG.GS2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-28, 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 2 prefixes · 49.15K addresses IPv6 0 prefixes

CountryNamePrefixes
JPJapan2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS55387
Registry name
RMGR-MIX
Registered
2010-01-18
Last changed
2013-04-10
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
Japan Communications Inc.
Also known as
JCI
Network type
Cable/DSL/ISP
Scope
Asia Pacific
Traffic ratio
Mostly Inbound
Peering policy
Open
Website
https://www.j-com.co.jp/

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
2 authorising AS55387
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS55387

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: 448 networks and 1,851 prefixes, as published 2026-10-29. 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