asn.dev

Autonomous system

AS18259 HIGE NTT Communications Corporation

Unclassified ARIN

IPv4 addresses 4.10K 5 prefixes
IPv6 prefixes 17 counted as prefixes, not addresses
Countries 1 mostly JP
Exchanges 0 recorded by PCH
Upstreams 2 1 downstream
Flagged prefixes 0 none

Summary

NTT DOCOMO BUSINESS

Japan · AI-generated

business enterprise japan ntt

The AS handle HIGE is held by NTT DOCOMO BUSINESS, Inc.

What it's used for

  • The address space carries corporate infrastructure, evidenced by the netname NTTDOCOMO-JP and registrant NTT DOCOMO Business, Inc across all announced IPv4 blocks.
  • The AS announces 4096 IPv4 addresses and 17 IPv6 prefixes against only 3 observed neighbours, indicating a role as an internal corporate estate or business access network rather than a transit provider.

Notable

  • All RDAP registrants align with the announcer, consistently listing NTT DOCOMO Business, Inc and the IRT IRT-NTTDOCOMO-JP.
  • The inventory consists of five IPv4 prefixes within the 202.178.96.0/21 range and a set of IPv6 prefixes under 2401:4640::/40, reflecting a finely subdivided internal network structure.

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

2 upstream, 1 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS2914NTT America, Inc.412
AS4713NTT DOCOMO BUSINESS,Inc.6

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-20, 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 5 prefixes · 4.10K addresses IPv6 17 prefixes

CountryNamePrefixes
JPJapan22

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS18259
Registry name
HIGE
Abuse contact
hostmaster@nic.ad.jp
Registered
2002-07-01
Last changed
2025-11-13
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 8 valid, 0 with no ROA
ROAs
5 authorising AS18259
ASPA
no ASPA record
IRR
100% registered · 8 of 8 announcements
Route objects
70 naming AS18259

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 1,778 prefixes, as published 2026-10-20. 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