asn.dev

Autonomous system

AS38629 OKN NTT Communications Corporation

Unclassified RIPE

IPv4 addresses 256 1 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly JP
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

NTT DOCOMO BUSINESS

Japan · AI-generated

telecom business japan

OKN is held by NTT DOCOMO BUSINESS, Inc.

What it's used for

  • The space carries business and interop traffic, evidenced by the netname OKN-1-CIDR-BLK-JP and the reverse DNS entry 127-dynamic.interop.ipnw.net.
  • The AS announces 256 IPv4 addresses across 1 prefix and 1 IPv6 prefix, with only 1 observed neighbour, indicating a small, self-contained network segment rather than a transit provider.
  • Traffic from this AS consists of data communication and long-distance services for business users, consistent with NTT DOCOMO BUSINESS's role in providing telecommunication services for corporate clients.

Notable

  • The registrant for the announced prefix is Japan Network Information Center; IRT-JPNIC-JP, which differs from the AS holder name but reflects standard JPNIC allocation practices for Japanese operators.
  • The operator was previously known as NTT Communications Corporation before being renamed to NTT DOCOMO BUSINESS, Inc.
  • The address inventory is minimal, consisting of a single /24 IPv4 block and a single /48 IPv6 block, typical for a specific service segment within a larger corporate estate.

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

1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS4713NTT DOCOMO BUSINESS,Inc.91

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

Shape and geography

IPv4 1 prefixes · 256 addresses IPv6 1 prefixes

CountryNamePrefixes
JPJapan2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS38629
Registry name
OKN
Registered
2007-08-20
Last changed
2025-11-13
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS38629
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS38629

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 1,771 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

Cross-check