ResearchRouting table, RPKI, IRR & looking glass

AS3258 xTom Japan Corporation

AS3258 (XTOM-JAPAN) is registered to xTom Japan Corporation in JP, through RIPE. It originates 161 prefixes in the global routing table.

135
IPv4 prefixes
26
IPv6 prefixes
36,096
IPv4 addresses
100%
RPKI valid

Who holds AS3258

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS3258
Handle
XTOM-JAPAN
Organization
xTom Japan Corporation
Country
JP
Registry
RIPE
ASPA
None published
WHOIS recordRIPE
% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to 'AS3209 - AS3353'

as-block:       AS3209 - AS3353
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2018-11-22T15:27:19Z
last-modified:  2018-11-22T15:27:19Z
source:         RIPE

% Information related to 'AS3258'

% Abuse contact for 'AS3258' is 'abuse@xtom.co.jp'

aut-num:        AS3258
as-name:        XTOM-JAPAN
descr:          xTom Japan Corporation
remarks:        ======================
import:         from AS-ANY accept ANY
export:         to AS-ANY announce AS-XTOM
mp-import:      afi ipv6.unicast from AS-ANY accept ANY
mp-export:      afi ipv6.unicast to AS-ANY announce AS-XTOM
remarks:        ========================================================
remarks:        =====          X   X  TTTTT  OOO  M     M          =====
remarks:        =====           X X     T   O   O MM   MM          =====
remarks:        =====            X      T   O   O M M M M          =====
remarks:        =====           X X     T   O   O M  M  M          =====
remarks:        =====          X   X    T    OOO  M     M          =====
remarks:        ========================================================
org:            ORG-XJCL1-RIPE
admin-c:        XJN1-RIPE
tech-c:         XJN1-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         xtom
created:        2011-06-17T06:26:36Z
last-modified:  2025-03-31T15:10:36Z
source:         RIPE

organisation:   ORG-XJCL1-RIPE
org-name:       xTom Japan Corporation
country:        JP
reg-nr:         4013301051632
org-type:       LIR
address:        Toranomon Hills Business Tower 15F
                1-17-1 Toranomon
address:        105-6415
address:        Minato City, Tokyo
address:        JAPAN
phone:          +8136206-6546
admin-c:        XJN1-RIPE
tech-c:         XJN1-RIPE
abuse-c:        XJN1-RIPE
mnt-ref:        xtom
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         xtom
created:        2023-12-07T14:30:52Z
last-modified:  2026-09-28T08:19:53Z
source:         RIPE # Filtered

role:           xTom Japan NOC
address:        Toranomon Hills Business Tower 15F
address:        1-17-1 Toranomon
address:        105-6415
address:        Minato City, Tokyo
address:        JAPAN
phone:          +81362066546
nic-hdl:        XJN1-RIPE
abuse-mailbox:  abuse@xtom.co.jp
mnt-by:         xtom
created:        2024-01-10T12:19:29Z
last-modified:  2026-10-02T07:39:09Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.124.1 (BUSA)


What AS3258 announces

Prefixes originated by AS3258 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
135
IPv6 prefixes
26
IPv4 addresses
36,096 (141 /24s)
RPKI valid
161 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS3258
505
With an IRR route object
161 100%

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

IPv4 (135)
5.253.17.0/2436.50.84.0/2343.239.249.0/2445.8.112.0/2445.8.113.0/2445.8.114.0/2445.8.222.0/2445.11.44.0/2445.11.46.0/2445.12.89.0/2445.14.64.0/2445.14.65.0/2445.14.66.0/2445.14.67.0/2445.66.129.0/2445.66.130.0/2445.66.131.0/2445.66.216.0/2445.66.217.0/2445.66.218.0/2445.89.232.0/2445.89.234.0/2445.89.235.0/2445.92.159.0/2445.94.40.0/2445.128.208.0/2445.128.209.0/2445.128.210.0/2445.128.211.0/2445.129.8.0/2445.129.9.0/2445.129.10.0/2445.129.11.0/2445.134.170.0/2445.134.171.0/2445.142.125.0/2445.142.126.0/2445.142.127.0/2445.142.166.0/2445.142.167.0/2445.143.131.0/2445.143.232.0/2445.143.233.0/2445.143.234.0/2445.143.235.0/2445.149.156.0/2445.149.157.0/2445.149.158.0/2445.149.159.0/2445.153.244.0/2445.153.245.0/2445.153.246.0/2445.153.247.0/2445.159.48.0/2445.159.49.0/2445.159.50.0/2445.159.51.0/2462.106.70.0/2462.106.75.0/2479.110.232.0/2485.113.70.0/2488.214.22.0/2491.199.209.0/2491.200.240.0/2491.200.242.0/2491.200.243.0/2492.60.43.0/2494.124.117.0/2494.124.118.0/2495.214.166.0/2495.214.167.0/24103.19.1.0/24103.47.186.0/24103.53.80.0/23103.121.208.0/24103.121.209.0/24103.121.210.0/24103.121.211.0/24103.125.234.0/24103.125.235.0/24103.150.8.0/24103.155.232.0/24103.155.233.0/24103.193.129.0/24103.193.130.0/24103.201.128.0/24103.201.130.0/24103.201.131.0/24109.107.137.0/24109.107.140.0/24109.121.61.0/24109.121.62.0/24141.98.196.0/24141.98.197.0/24141.98.198.0/24146.19.19.0/24146.19.163.0/24147.78.242.0/24147.78.243.0/24147.78.244.0/24147.78.245.0/24147.78.246.0/24147.78.247.0/24149.62.44.0/24167.253.156.0/24172.93.220.0/23176.119.148.0/24176.119.149.0/24176.119.151.0/24176.126.114.0/24185.120.183.0/24185.184.223.0/24185.200.64.0/24185.200.65.0/24185.200.66.0/24185.200.67.0/24185.213.150.0/24185.213.151.0/24185.254.72.0/24192.109.233.0/24
Show 15 more
IPv6 (26)

RPKI valid   RPKI invalid   no ROA covers it

Who AS3258 is reached through

The AS just before AS3258 in the paths our looking glass collectors hold, for 60 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Sourceas-nameMaintained by
ALTDBXTOM-TOKYOMAINT-AS206499
RADBXTOM-TOKYOMAINT-AS9312
RIPEXTOM-JAPANRIPE-NCC-END-MNT, XTOM

Route objects with origin AS3258: RADB 873 · RIPE 744 · ALTDB 430 · APNIC 15 · ARIN 2

as-sets that list AS3258 (20)