101.0.16.0/20

AS45800 · Suan sunandha Rajabhat University, which is one university in Thailand

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Summary

Country	Japan
Domain	m-idc.jp
ASN	AS45800
Registry	APNIC
ID	W-CAST-2-AS-AP

WHOIS Details

inetnum:        101.0.16.0 - 101.0.31.255
netname:        W-CAST-2-AS-AP
descr:          Double Cast Inc.
descr:          Fuji Shinjuku Building 4th floor
descr:          Shinjuku 5-11-13
country:        JP
org:            ORG-DCI2-AP
admin-c:        YM929-AP
tech-c:         YM929-AP
abuse-c:        AW972-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-JP-DOUBLECAST
mnt-routes:     MAINT-JP-DOUBLECAST
mnt-irt:        IRT-W-CAST-2-JP
last-modified:  2020-07-22T01:44:14Z
source:         APNIC

irt:            IRT-W-CAST-2-JP
address:        Fuji Shinjuku Building 4th floor
address:        Shinjuku 5-11-13 Shinjuku-ku
address:        Tokyo 160-0022 Japan
e-mail:         ipadmin@m-idc.jp
abuse-mailbox:  ipadmin@m-idc.jp
admin-c:        EN126-AP
tech-c:         EN126-AP
auth:           # Filtered
remarks:        ipadmin@m-idc.jp was validated on 2026-03-03
mnt-by:         MAINT-JP-DOUBLECAST
last-modified:  2026-03-03T22:41:28Z
source:         APNIC

organisation:   ORG-DCI2-AP
org-name:       Double Cast Inc.
org-type:       LIR
country:        JP
address:        Fuji Shinjuku Building 4th floor
address:        Shinjuku 5-11-13
phone:          +81-3-3350-7762
fax-no:         +81-3-3350-8685
e-mail:         ipadmin@m-idc.jp
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:43Z
source:         APNIC

role:           ABUSE WCAST2JP
country:        ZZ
address:        Fuji Shinjuku Building 4th floor
address:        Shinjuku 5-11-13 Shinjuku-ku
address:        Tokyo 160-0022 Japan
phone:          +000000000
e-mail:         ipadmin@m-idc.jp
admin-c:        EN126-AP
tech-c:         EN126-AP
nic-hdl:        AW972-AP
remarks:        Generated from irt object IRT-W-CAST-2-JP
remarks:        ipadmin@m-idc.jp was validated on 2026-03-03
abuse-mailbox:  ipadmin@m-idc.jp
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-03T22:41:52Z
source:         APNIC

person:         Yoshihiko Mochizuki
address:        Fuji Shinjuku Building 4th floor
address:        Shinjuku 5-11-13 Shinjuku-ku
address:        Tokyo 160-0022 Japan
country:        JP
phone:          +81-3-3350-7762
e-mail:         support@m-idc.com
nic-hdl:        YM929-AP
mnt-by:         MAINT-JP-DOUBLECAST
last-modified:  2011-03-13T10:42:49Z
source:         APNIC

Overlapping Ranges

BGP prefixes that are contained by 101.0.16.0/20

Range	ASN	Company	Num of IPs
101.0.28.0/24	AS139468	DCCOM01	256
101.0.29.0/24	AS139468	DCCOM02	256
101.0.31.0/24	AS139468	DCCOM04	256
101.0.17.0/24	AS202736	WISDOM CLOUD INTERNET TECHNOLOGY PTE. LTD.	256
101.0.18.0/24	AS202736	WISDOM CLOUD INTERNET TECHNOLOGY PTE. LTD.	256
101.0.19.0/24	AS202736	WISDOM CLOUD INTERNET TECHNOLOGY PTE. LTD.	256
101.0.20.0/24	AS2914	NTT Communications Corporation	256
101.0.21.0/24	AS401783	TOKALA COMMUNICATIONS INC.	256
101.0.22.0/24	AS401783	TOKALA COMMUNICATIONS INC.	256
101.0.23.0/24	AS401783	TOKALA COMMUNICATIONS INC.	256

Nearby Ranges

BGP prefixes that overlap with 101.0.0.0/16

Range	ASN	Company	Num of IPs
101.0.64.0/18	AS55803	Hostopia Australia Web Pty Ltd	16,384
101.0.4.0/22	AS55670	PT Universal Broadband	1,024
101.0.32.0/22	AS133661	Netplus Broadband Services Private Limited	1,024
101.0.42.0/24	AS133661	Netplus Broadband Services Private Limited	256
101.0.45.0/24	AS133661	Netplus Broadband Services Private Limited	256
101.0.49.0/24	AS133661	Netplus Broadband Services Private Limited	256
101.0.50.0/24	AS133661	Netplus Broadband Services Private Limited	256
101.0.53.0/24	AS133661	Netplus Broadband Services Private Limited	256
101.0.57.0/24	AS133661	Netplus Broadband Services Private Limited	256
101.0.62.0/24	AS134674	TATA PLAY BROADBAND PRIVATE LIMITED	256
101.0.63.0/24	AS134674	TATA PLAY BROADBAND PRIVATE LIMITED	256
101.0.28.0/24	AS139468	DCCOM01	256
101.0.29.0/24	AS139468	DCCOM02	256
101.0.31.0/24	AS139468	DCCOM04	256
101.0.36.0/24	AS154239	NEOSOFT TECHNOLOGIES INTERNATIONAL	256
101.0.10.0/24	AS132827	AMDIA Inc.	256
101.0.17.0/24	AS202736	WISDOM CLOUD INTERNET TECHNOLOGY PTE. LTD.	256
101.0.18.0/24	AS202736	WISDOM CLOUD INTERNET TECHNOLOGY PTE. LTD.	256
101.0.19.0/24	AS202736	WISDOM CLOUD INTERNET TECHNOLOGY PTE. LTD.	256
101.0.12.0/24	AS2914	NTT Communications Corporation	256
101.0.13.0/24	AS2914	NTT Communications Corporation	256
101.0.14.0/24	AS2914	NTT Communications Corporation	256
101.0.15.0/24	AS2914	NTT Communications Corporation	256
101.0.20.0/24	AS2914	TOKALA COMMUNICATIONS INC.	256
101.0.21.0/24	AS401783	TOKALA COMMUNICATIONS INC.	256
101.0.22.0/24	AS401783	TOKALA COMMUNICATIONS INC.	256
101.0.23.0/24	AS401783	TOKALA COMMUNICATIONS INC.	256
101.0.4.0/24	AS55670	PT Universal Broadband	256
101.0.7.0/24	AS55670	PT Universal Broadband	256
101.0.48.0/24	AS154239	NEOSOFT TECHNOLOGIES INTERNATIONAL	256
101.0.11.0/24	AS132827	AMDIA Inc.	256
101.0.8.0/24	AS132827	AMDIA Inc.	256
101.0.9.0/24	AS132827	AMDIA Inc.	256
101.0.37.0/24	AS133661	Netplus Broadband Services Private Limited	256
101.0.38.0/24	AS133661	Netplus Broadband Services Private Limited	256
101.0.41.0/24	AS133661	Netplus Broadband Services Private Limited	256

Hosted domains

There are 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

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

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

IP Address	ASN	Details
101.0.19.1	AS202736 WISDOM CLOUD INTERNET TECHNOLOGY PTE. LTD.	`0.38ms` from Tokyo, JP
101.0.21.237	AS401783 TOKALA COMMUNICATIONS INC.	`0.44ms` from Tokyo, JP
101.0.18.1	AS202736 WISDOM CLOUD INTERNET TECHNOLOGY PTE. LTD.	`0.40ms` from Tokyo, JP
101.0.22.61	AS401783 TOKALA COMMUNICATIONS INC.	`0.45ms` from Tokyo, JP
101.0.23.66	AS401783 TOKALA COMMUNICATIONS INC.	`0.47ms` from Tokyo, JP
101.0.28.195	AS139468 DC Communications Inc.	`0.28ms` from Tokyo, JP
101.0.20.1	AS2914 NTT America, Inc.	`0.64ms` from Tokyo, JP
101.0.17.1	AS202736 WISDOM CLOUD INTERNET TECHNOLOGY PTE. LTD.	`0.38ms` from Tokyo, JP
101.0.31.2	AS139468 DC Communications Inc.	`0.35ms` 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
97.135.61.4	AS6167 Verizon Business	`16.52ms` from Chicago, US
34.179.143.36	AS396982 Google LLC	`0.11ms` from Frankfurt am Main, DE
189.196.133.4	AS13999 Mega Cable, S.A. de C.V.	`11.62ms` from Guadalajara, MX
108.207.68.244	AS7018 AT&T Enterprises, LLC	`19.36ms` from Los Angeles, US
75.74.242.116	AS7922 Comcast Cable Communications, LLC	`5.38ms` from Pompano Beach, US
92.100.99.116	AS12389 PJSC Rostelecom	`4.13ms` from Saint Petersburg, RU
178.175.115.244	AS8661 Telekomi i Kosoves SH.A.	`2.09ms` from Skopje, MK
106.39.242.180	AS23724 IDC, China Telecommunications Corporation	`3.17ms` from Tianjin, CN
154.247.133.228	AS36947 Telecom Algeria	`13.31ms` from Algiers, DZ
104.138.72.68	AS19115 Charter Communications LLC	`6.14ms` from Atlanta, US
108.203.38.68	AS7018 AT&T Enterprises, LLC	`9.18ms` from Atlanta, US
103.130.78.36	AS4049 CELLO GROUP LIMITED	`0.86ms` from Auckland, NZ
209.15.124.4	AS139591 National Telecom Public Company Limited	`1.57ms` from Bangkok, TH
36.131.70.20	AS9808 China Mobile Communications Group Co., Ltd.	`8.53ms` from Changchun, CN
54.246.161.196	AS16509 Amazon.com, Inc.	`0.21ms` from Dublin, IE
90.216.225.116	AS5607 Sky UK Limited	`2.85ms` from Erith, GB
2.204.113.228	AS3209 Vodafone GmbH	`5.49ms` from Frankfurt am Main, DE
154.120.106.212	AS37340 SPECTRANET LIMITED	`13.26ms` from Lagos, NG
165.120.70.52	AS2856 British Telecommunications PLC	`11.59ms` from London, GB
66.229.113.4	AS7922 Comcast Cable Communications, LLC	`5.04ms` from Miami, US
95.245.199.148	AS3269 Telecom Italia S.p.A.	`5.68ms` from Naples, IT
50.254.179.164	AS7922 Comcast Cable Communications, LLC	`7.17ms` from New York City, US
121.22.187.132	AS4837 CHINA UNICOM China169 Backbone	`14.71ms` from Qingdao, CN
46.32.93.36	AS48416 Information Network, LLC	`1.02ms` from Saint Petersburg, RU
94.239.84.20	AS5410 Bouygues Telecom SA	`2.08ms` from Saint-Denis, FR

Traceroute

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

traceroute -a -n -q1 -m4 101.0.19.78

traceroute to 101.0.19.78 (101.0.19.78): 4 hops max, 52 byte packets

1 [AS202422] 89.44.197.2 0.109 ms

2 *

3 *

4 *

Measurement taken from

IPinfo ProbeNet in Sofia, BG

On March 20th 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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