asn.dev

Autonomous system

AS37919 SEGASAMMY SEGA SAMMY HOLDINGS INC.

Unclassified APNIC

IPv4 addresses 65.54K 7 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly JP
Exchanges 1 recorded by PCH
Upstreams 5 0 downstream
Flagged prefixes 0 none

Summary

Sega Sammy Holdings

Japan · AI-generated

business corporate japan gaming

SEGASAMMY is the autonomous system for Sega Sammy Holdings Inc., a Japanese conglomerate formed from the merger of Sega and Sammy Corporation.

What it's used for

  • The address space carries corporate infrastructure, evidenced by the consistent netname SEGASAMMY across all announced prefixes.
  • The AS announces 65,536 IPv4 addresses across 7 prefixes and 1 IPv6 prefix, with 11 observed routing neighbours.
  • This inventory represents an internal corporate estate with site-by-site segmentation, rather than a public access or transit network.

Notable

  • All registrants are listed as IRT-JPNIC-JP with the netname SEGASAMMY, aligning with the AS holder.
  • Sega Sammy Holdings was established in October 2004 through the management integration of SEGA CORPORATION and Sammy CORPORATION.
  • The IPv4 inventory is finely subdivided into seven distinct prefixes within the 157.109.0.0/17 block.

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

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
BroadBand Internet eXchange TokyoTokyo, Japan101.203.89.96

Transit providers

5 upstream, 0 downstream and 9 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS2519ARTERIA Networks Corporation84
AS6939Hurricane Electric LLC31
AS17676SoftBank Corp.31
AS24482SG.GS3
AS9002RETN Limited2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, 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 7 prefixes · 65.54K addresses IPv6 1 prefixes

CountryNamePrefixes
JPJapan8

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS37919
Registry name
SEGASAMMY
Registered
2006-01-30
Last changed
2021-12-16
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 3 with no ROA
ROAs
0 authorising AS37919
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
5 naming AS37919

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: 447 networks and 1,843 prefixes, as published 2026-11-01. 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