18097 DCN D.C.N. Corporation, JP
Adjacency: 1 Upstream: 1 Downstream: 0
Upstream Adjacent AS list
AS7529 NETIRD NetIRD Inc., JP
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 6908 AS18097 ORIGIN Originate: 19968 /17.71 Transit: 0 /0.00 DCN D.C.N. Corporation, JP
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 6499 AS18097 DCN D.C.N. Corporation, JP 19 10 3 12 7 36.84% Prefix AS Path Aggregation Suggestion 27.109.120.0/22 6939 7529 18097 45.113.172.0/22 6939 7529 18097 103.36.140.0/22 6939 7529 18097 103.53.96.0/22 6939 7529 18097 103.83.24.0/22 6939 7529 18097 119.15.144.0/21 6939 7529 18097 121.100.56.0/21 6939 7529 18097 + Announce - aggregate of 121.100.56.0/22 (6939 7529 18097) and 121.100.60.0/22 (6939 7529 18097) 121.100.56.0/22 6939 7529 18097 - Withdrawn - aggregated with 121.100.60.0/22 (6939 7529 18097) 121.100.60.0/22 6939 7529 18097 - Withdrawn - aggregated with 121.100.56.0/22 (6939 7529 18097) 123.108.84.0/22 6939 7529 18097 153.124.232.0/22 6939 7529 18097 + Announce - aggregate of 153.124.232.0/23 (6939 7529 18097) and 153.124.234.0/23 (6939 7529 18097) 153.124.232.0/24 6939 7529 18097 - Withdrawn - aggregated with 153.124.233.0/24 (6939 7529 18097) 153.124.233.0/24 6939 7529 18097 - Withdrawn - aggregated with 153.124.232.0/24 (6939 7529 18097) 153.124.234.0/24 6939 7529 18097 - Withdrawn - aggregated with 153.124.235.0/24 (6939 7529 18097) 153.124.235.0/24 6939 7529 18097 - Withdrawn - aggregated with 153.124.234.0/24 (6939 7529 18097) 210.189.176.0/20 6939 7529 18097 + Announce - aggregate of 210.189.176.0/21 (6939 7529 18097) and 210.189.184.0/21 (6939 7529 18097) 210.189.176.0/22 6939 7529 18097 - Withdrawn - aggregated with 210.189.180.0/22 (6939 7529 18097) 210.189.180.0/22 6939 7529 18097 - Withdrawn - aggregated with 210.189.176.0/22 (6939 7529 18097) 210.189.184.0/22 6939 7529 18097 - Withdrawn - aggregated with 210.189.188.0/22 (6939 7529 18097) 210.189.188.0/22 6939 7529 18097 - Withdrawn - aggregated with 210.189.184.0/22 (6939 7529 18097) 216.179.198.0/23 2497 7529 18097 219.105.32.0/20 6939 7529 18097
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS18097 14 More Specifics 21 Total Advertisements DCN D.C.N. Corporation, JP
121.100.56.0/22 121.100.56.0/21
121.100.60.0/22 121.100.56.0/21
133.140.0.0/16 133.0.0.0/8
153.124.232.0/24 153.124.232.0/21
153.124.233.0/24 153.124.232.0/21
153.124.234.0/24 153.124.232.0/21
153.124.235.0/24 153.124.232.0/21
184.174.89.0/24 184.174.0.0/17
210.189.176.0/22 210.188.0.0/14
210.189.180.0/22 210.188.0.0/14
210.189.184.0/22 210.188.0.0/14
210.189.188.0/22 210.188.0.0/14
216.179.198.0/23 216.179.128.0/17
219.105.32.0/20 219.96.0.0/11
176.125.254.0/24 176.125.254.0/23
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 184.174.89.0/24 Announced
- 176.125.254.0/24 Withdrawn
whois: 402551
IANA has recorded AS18097 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS18097\n % [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to 'AS17653 - AS18431'
as-block: AS17653 - AS18431
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
admin-c: HM20-AP
tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
last-modified: 2019-01-08T23:19:07Z
source: APNIC
role: APNIC Hostmaster
address: 6 Cordelia Street
address: South Brisbane
address: QLD 4101
country: AU
phone: +61 7 3858 3100
fax-no: +61 7 3858 3199
e-mail: helpdesk@apnic.net
admin-c: AMS11-AP
tech-c: AH256-AP
nic-hdl: HM20-AP
remarks: Administrator for APNIC
notify: hostmaster@apnic.net
mnt-by: MAINT-APNIC-AP
last-modified: 2013-10-23T04:06:51Z
source: APNIC
% Information related to 'AS18085 - AS18098'
as-block: AS18085 - AS18098
descr: JPNIC-2Byte-ASBLOCK-AP
descr: for assignment to JPNIC members
country: JP
admin-c: JNIC1-AP
tech-c: JNIC1-AP
remarks: Authoritative information regarding AS Number
remarks: assignments made from within this block can be
remarks: queried at whois.nic.ad.jp.
remarks: To only display English output,
remarks: add '/e' at the end of command,
remarks: e.g. 'whois -h whois.nic.ad.jp xxx/e'.
mnt-by: APNIC-HM
mnt-lower: MAINT-JPNIC
last-modified: 2018-07-09T01:00:49Z
source: APNIC
role: Japan Network Information Center
address: Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda
address: Chiyoda-ku, Tokyo 101-0047, Japan
country: JP
phone: +81-3-5297-2311
fax-no: +81-3-5297-2312
e-mail: hostmaster@nic.ad.jp
admin-c: JI13-AP
tech-c: JE53-AP
nic-hdl: JNIC1-AP
mnt-by: MAINT-JPNIC
last-modified: 2022-01-05T03:04:02Z
source: APNIC
% Information related to 'AS18097'
% Abuse contact for 'AS18097' is 'hostmaster@nic.ad.jp'
aut-num: AS18097
as-name: DCN
descr: D.C.N. Corporation
descr: 6F 4-2-16 Komaba Meguro
descr: Tokyo JAPAN
admin-c: JNIC1-AP
tech-c: JNIC1-AP
remarks: Email address for spam or abuse complaints : abuse@dcn.ad.jp
country: JP
mnt-by: MAINT-JPNIC
mnt-lower: MAINT-JPNIC
mnt-irt: IRT-JPNIC-JP
last-modified: 2024-10-03T07:54:18Z
source: APNIC
irt: IRT-JPNIC-JP
address: Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda
address: Chiyoda-ku, Tokyo 101-0047, japan
e-mail: hostmaster@nic.ad.jp
abuse-mailbox: hostmaster@nic.ad.jp
phone: +81-3-5297-2311
fax-no: +81-3-5297-2312
admin-c: JNIC1-AP
tech-c: JNIC1-AP
auth: # Filtered
remarks: hostmaster@nic.ad.jp was validated on 2024-11-27
mnt-by: MAINT-JPNIC
last-modified: 2025-09-04T01:00:00Z
source: APNIC
role: Japan Network Information Center
address: Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda
address: Chiyoda-ku, Tokyo 101-0047, Japan
country: JP
phone: +81-3-5297-2311
fax-no: +81-3-5297-2312
e-mail: hostmaster@nic.ad.jp
admin-c: JI13-AP
tech-c: JE53-AP
nic-hdl: JNIC1-AP
mnt-by: MAINT-JPNIC
last-modified: 2022-01-05T03:04:02Z
source: APNIC
% Information related to 'AS18097'
aut-num: AS18097
as-name: DCN
descr: D.C.N. Corporation
import: from AS4694 100 accept ANY
import: from AS9370 100 accept ANY
import: from AS9371 100 accept ANY
import: from AS10012 100 accept ANY
export: to AS4694 announce AS18097
export: to AS9370 announce AS18097
export: to AS9371 announce AS18097
export: to AS10012 announce AS18097
country: JP
admin-c: SK755JP
tech-c: TF304JP
last-modified: 2004-05-27T20:43:08Z
remarks: This information has been partially mirrored by APNIC from
remarks: JPNIC. To obtain more specific information, please use the
remarks: JPNIC WHOIS Gateway at
remarks: http://www.nic.ad.jp/en/db/whois/en-gateway.html or
remarks: whois.nic.ad.jp for WHOIS client. (The WHOIS client
remarks: defaults to Japanese output, use the /e switch for English
remarks: output)
source: JPNIC
% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU5)