AS4713 NTT Communications Corporation (OCN) 🇯🇵 JP

NTT DOCOMO BUSINESS, Inc.. Announcing 186 prefixes, seen at the RIS collectors.

IPv4 prefixes

181

28,624,896 (111,816 × /24)

IPv6 prefixes

1,026 × /32

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

156

ASes reachable through it

Registry and operator data

AS number: AS4713
Name: NTT Communications Corporation (OCN)
Organisation: NTT Communications Corporation (OCN)
Country: 🇯🇵 JP
RIR: APNIC
Allocated: 1995-08-30
Network type: NSP
Scope: Regional
Peering policy: Selective
IRR as-set: AS-OCN
Website: https://www.ntt.com/en/index.html
PeeringDB: net/826
Exchanges: 3
Facilities: 1

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

76 valid (40.9%) 0 invalid (0.0%) 110 no ROA (59.1%)

Whois

Fetched from whois.apnic.net

as-block:       AS4608 - AS4865
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:  2019-05-20T03:52:26Z
source:         APNIC

role:           APNIC Hostmaster
address:        PO Box 3646
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:  2026-08-26T00:40:00Z
source:         APNIC

as-block:       AS4683 - AS4735
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:  2023-08-28T04:50:39Z
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

aut-num:        AS4713
as-name:        OCN
descr:          NTT DOCOMO BUSINESS,Inc.
import:
export:
country:        JP
admin-c:        JP00278017
tech-c:         JP00278026
last-modified:  2025-10-20T19:13:13Z
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