218.251.128.0/17

AS23720 · Rakuten Mobile Network, Inc.

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Summary

Country	Japan
Domain	rakuten.com
ASN	AS23720
Registry	APNIC
ID	RMNI-JP

WHOIS Details

inetnum:        218.251.128.0 - 218.251.255.255
netname:        RMNI-JP
descr:          Rakuten Mobile Network, Inc.
country:        JP
org:            ORG-RMNI1-AP
admin-c:        RMNI1-AP
tech-c:         RMNI1-AP
abuse-c:        AR792-AP
status:         ALLOCATED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-RMNI-JP
mnt-routes:     MAINT-RMNI-JP
mnt-irt:        IRT-RMNI-JP
last-modified:  2020-10-20T13:44:47Z
source:         APNIC

irt:            IRT-RMNI-JP
address:        1-14-1 Tamagawa, Setagaya-ku, Tokyo
e-mail:         rmi-as138384@mail.rakuten.com
abuse-mailbox:  rmi-abuse@mail.rakuten.com
admin-c:        RMNI1-AP
tech-c:         RMNI1-AP
auth:           # Filtered
remarks:        rmi-as138384@mail.rakuten.com was validated on 2025-12-25
remarks:        rmi-abuse@mail.rakuten.com was validated on 2026-01-16
mnt-by:         MAINT-RMNI-JP
last-modified:  2026-01-16T00:28:24Z
source:         APNIC

organisation:   ORG-RMNI1-AP
org-name:       Rakuten Mobile, Inc.
org-type:       LIR
country:        JP
address:        1-14-1 Tamagawa, Setagaya-ku
phone:          +81-050-5817-1360
e-mail:         rmi-as138384@mail.rakuten.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:17:40Z
source:         APNIC

role:           ABUSE RMNIJP
country:        ZZ
address:        1-14-1 Tamagawa, Setagaya-ku, Tokyo
phone:          +000000000
e-mail:         rmi-as138384@mail.rakuten.com
admin-c:        RMNI1-AP
tech-c:         RMNI1-AP
nic-hdl:        AR792-AP
remarks:        Generated from irt object IRT-RMNI-JP
remarks:        rmi-as138384@mail.rakuten.com was validated on 2025-12-25
remarks:        rmi-abuse@mail.rakuten.com was validated on 2026-01-16
abuse-mailbox:  rmi-abuse@mail.rakuten.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-01-16T00:28:35Z
source:         APNIC

role:           Rakuten Mobile Network Inc administrator
address:        1-14-1 Tamagawa, Setagaya-ku, Tokyo
country:        JP
phone:          +81-050-5817-1360
fax-no:         +81-050-5817-1360
e-mail:         rmi-as138384@mail.rakuten.com
admin-c:        RMNI1-AP
tech-c:         RMNI1-AP
nic-hdl:        RMNI1-AP
mnt-by:         MAINT-RMNI-JP
last-modified:  2021-02-14T23:12:21Z
source:         APNIC

route:          218.251.128.0/17
origin:         AS23720
descr:          Rakuten Communications K.K. Rakuten Crimson House 8F 1-14-1 Tamagawa Setagaya-ku
mnt-by:         MAINT-RMNI-JP
last-modified:  2020-03-18T03:15:06Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 218.251.0.0/16

Range	ASN	Company	Num of IPs
218.251.0.0/17	AS17511	OPTAGE Inc.	32,768

Hosted domains

There are 21 domain names hosted across 21 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
218.251.246.124	decoo.jp	1
218.251.234.96	xn--so-net-ng2j.com	1
218.251.226.149	tri-well.net	1
218.251.254.51	smart-in.jp	1
218.251.248.168	tel-marketing-system.jp	1
218.251.250.26	cloudlivebox.net	1
218.251.253.163	24jazzjapan.com	1
218.251.240.193	comtel.work	1
218.251.249.8	neo-quickcall.net	1
218.251.250.2	ew-transmission.info	1
218.251.253.195	smart-in.org	1
218.251.246.158	saiko2018-spring.jp	1
218.251.231.187	xn--ocn-ws1e.com	1
218.251.246.12	saiko2018-summer.jp	1
218.251.252.128	mimeidia.net	1
218.251.234.80	u-ser.net	1
218.251.231.145	workwelcommunicator.com	1
218.251.240.191	n-quickcall.net	1
218.251.231.110	ia-inter.net	1
218.251.249.91	hagurashop.com	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

33 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
218.251.248.23	AS23720 Rakuten Mobile Network, Inc.	`4.12ms` from Tokyo, JP
218.251.244.26	AS23720 Rakuten Mobile Network, Inc.	`4.24ms` from Tokyo, JP
218.251.220.67	AS50605 Radius Communications Ltd	`0.57ms` from Osaka, JP
218.251.255.254	AS23720 Rakuten Mobile Network, Inc.	`4.26ms` from Tokyo, JP

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
217.121.155.1	AS33915 Vodafone Libertel B.V.	`4.62ms` from Amsterdam, NL
71.163.159.1	AS701 Verizon Business	`2.45ms` from Ashburn, US
68.208.12.161	AS6389 AT&T Enterprises, LLC	`3.10ms` from Atlanta, US
68.16.24.1	AS6389 AT&T Enterprises, LLC	`19.17ms` from Atlanta, US
12.9.113.65	AS7018 AT&T Enterprises, LLC	`15.15ms` from Atlanta, US
146.209.175.49	AS399251 Koch Industries, Inc.	`0.76ms` from Bengaluru, IN
92.197.42.193	AS20676 Plusnet GmbH	`0.72ms` from Berlin, DE
216.195.184.129	AS5760 Biddeford Internet Corp	`4.92ms` from Boston, US
178.117.208.1	AS6848 Telenet BV	`3.22ms` from Brussels, BE
185.88.130.1	AS28721 Allnet Cloud Srl	`0.72ms` from Bucharest, RO
217.55.176.1	AS36992 ETISALAT MISR	`3.40ms` from Cairo, EG
175.0.205.129	AS4134 CHINANET BACKBONE	`2.25ms` from Changsha, CN
71.68.104.1	AS11426 Charter Communications Inc	`9.80ms` from Charlotte, US
64.22.7.1	AS18474 Aeneas Internet Services	`12.51ms` from Chicago, US
141.219.178.1	AS62618 Michigan Technological University	`11.68ms` from Chicago, US
69.61.155.129	AS6181 Cincinnati Bell Telephone Company LLC	`7.01ms` from Columbus, US
76.223.244.1	AS7018 AT&T Enterprises, LLC	`6.24ms` from Columbus, US
80.167.248.129	AS3292 TDC Holding A/S	`1.38ms` from Copenhagen, DK
94.147.52.1	AS9158 Telenor A/S	`4.61ms` from Copenhagen, DK
186.159.168.1	AS52228 Cable Tica	`4.82ms` from Curridabat, CR
24.255.80.65	AS22773 Cox Communications Inc.	`11.28ms` from Dallas, US
69.6.173.1	AS6620 AMA Communications, LLC	`8.22ms` from Dallas, US
12.111.251.65	AS7018 AT&T Enterprises, LLC	`10.43ms` from Dallas, US
73.64.56.1	AS7922 Comcast Cable Communications, LLC	`17.34ms` from Detroit, US
87.39.202.1	AS1213 ASIERA TECHNOLOGY SERVICES CLG	`2.17ms` from Dublin, IE

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f5 -m8 218.251.201.176

traceroute to 218.251.201.176 (218.251.201.176): 8 hops max, 52 byte packets

5 [AS9902] 123.108.254.16 0.434 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Phnom Penh, KH

On April 13th 2026

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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