203.111.192.0/20

AS7511 · SYNAPSE Co.,Ltd.

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Summary

Country	Japan
Domain	synapse.jp
ASN	AS7511
Registry	APNIC
ID	SYNAPSE

WHOIS Details

inetnum:        203.111.192.0 - 203.111.207.255
netname:        SYNAPSE
descr:          SYNAPSE Co.,Ltd.
descr:          SYNAPSE Bldg.,6-1,Chuo-cho,Kagoshima city, 890-0053,Japan
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
remarks:        Email address for spam or abuse complaints : [email protected]
country:        JP
mnt-by:         MAINT-JPNIC
mnt-lower:      MAINT-JPNIC
mnt-irt:        IRT-JPNIC-JP
status:         ALLOCATED PORTABLE
last-modified:  2017-05-18T06:36:03Z
source:         APNIC

irt:            IRT-JPNIC-JP
address:        Urbannet-Kanda Bldg 4F, 3-6-2 Uchi-Kanda
address:        Chiyoda-ku, Tokyo 101-0047, Japan
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
auth:           # Filtered
mnt-by:         MAINT-JPNIC
last-modified:  2017-10-18T10:21:54Z
source:         APNIC

role:           Japan Network Information Center
address:        Urbannet-Kanda Bldg 4F
address:        3-6-2 Uchi-Kanda
address:        Chiyoda-ku, Tokyo 101-0047,Japan
country:        JP
phone:          +81-3-5297-2311
fax-no:         +81-3-5297-2312
e-mail:         [email protected]
admin-c:        JI13-AP
tech-c:         JE53-AP
nic-hdl:        JNIC1-AP
mnt-by:         MAINT-JPNIC
last-modified:  2012-08-28T07:58:02Z
source:         APNIC

inetnum:        203.111.192.0 - 203.111.207.255
netname:        SYNAPSE-CIDR-BLK-JP
descr:          SYNAPSE Co.,Ltd.
remarks:        Email address for spam or abuse complaints : [email protected]
country:        JP
admin-c:        JP00146894
tech-c:         JP00146894
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)
last-modified:  2017-05-19T00:13:03Z
source:         JPNIC

Nearby Ranges

BGP prefixes that overlap with 203.111.0.0/16

Range	ASN	Company	Num of IPs
203.111.0.0/17	AS2764	Telecommunications carrier and service provider	32,768
203.111.0.0/17	AS9942	Telecommunications carrier and service provider	32,768
203.111.0.0/17	AS7545	Telecommunications carrier and service provider	32,768
203.111.0.0/17	AS18117	Telecommunications carrier and service provider	32,768
203.111.224.0/20	AS10139	Smart Broadband Incorporated	4,096
203.111.208.0/20	AS9676	Tong Ya Cable T.V. Co.Ltd	4,096
203.111.240.0/21	AS9993	ITOCHU Techno-Solutions Corporation	2,048
203.111.190.0/23	AS7545	ELMTREE CONSULTING SERVICES PTY LTD	512
203.111.254.0/23	AS151991	PT SWIN	512
203.111.252.0/23	AS151993	PT Wifian Global Nusantara	512

Hosted domains

There are 2 domain names hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.111.193.253	mysingtel.com.sg	2

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

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

IP Address	ASN	Details
203.111.199.90	AS7511 SYNAPSE Co.,Ltd.	`12.09ms` from Osaka, JP
203.111.202.137	AS7511 SYNAPSE Co.,Ltd.	`11.55ms` from Osaka, JP
203.111.205.89	AS7511 SYNAPSE Co.,Ltd.	`11.96ms` from Osaka, JP
203.111.201.181	AS7511 SYNAPSE Co.,Ltd.	`11.76ms` from Osaka, JP
203.111.200.153	AS7511 SYNAPSE Co.,Ltd.	`11.47ms` from Osaka, JP
203.111.193.140	AS7511 SYNAPSE Co.,Ltd.	`11.44ms` from Osaka, JP
203.111.207.44	AS7511 SYNAPSE Co.,Ltd.	`11.63ms` from Osaka, JP
203.111.206.123	AS7511 SYNAPSE Co.,Ltd.	`11.62ms` from Osaka, JP
203.111.204.213	AS7511 SYNAPSE Co.,Ltd.	`11.67ms` from Osaka, JP
203.111.196.171	AS7511 SYNAPSE Co.,Ltd.	`11.78ms` from Osaka, JP
203.111.192.12	AS7511 SYNAPSE Co.,Ltd.	`11.42ms` from Osaka, JP
203.111.203.237	AS7511 SYNAPSE Co.,Ltd.	`11.33ms` from Osaka, JP
203.111.198.94	AS7511 SYNAPSE Co.,Ltd.	`11.44ms` from Osaka, JP
203.111.194.129	AS7511 SYNAPSE Co.,Ltd.	`11.79ms` from Osaka, JP
203.111.195.180	AS7511 SYNAPSE Co.,Ltd.	`12.05ms` from Osaka, JP
203.111.197.6	AS7511 SYNAPSE Co.,Ltd.	`11.78ms` from Osaka, 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
68.14.157.132	AS22773 Cox Communications Inc.	`8.39ms` from Boston, US
20.10.229.212	AS8075 Microsoft Corporation	`0.24ms` from Boydton, US
129.21.161.180	AS4385 Rochester Institute of Technology	`3.59ms` from Buffalo, US
147.8.208.228	AS4528 The University of Hong Kong	`0.84ms` from Hong Kong, HK
176.49.184.132	AS12389 PJSC Rostelecom	`0.93ms` from Krasnoyarsk, RU
46.24.14.132	AS12430 VODAFONE ESPANA S.A.U.	`1.25ms` from Madrid, ES
88.14.23.116	AS3352 TELEFONICA DE ESPANA S.A.U.	`6.30ms` from Madrid, ES
90.116.105.20	AS3215 Orange S.A.	`7.09ms` from Marseille, FR
13.200.185.148	AS16509 Amazon.com, Inc.	`0.16ms` from Mumbai, IN
137.119.4.116	AS17253 TEC of Jackson, Inc.	`6.70ms` from New Orleans, US
129.24.57.196	AS3388 University of New Mexico	`15.07ms` from Phoenix, US
27.222.57.100	AS4837 CHINA UNICOM China169 Backbone	`7.29ms` from Qingdao, CN
112.235.114.180	AS4837 CHINA UNICOM China169 Backbone	`7.74ms` from Qingdao, CN
87.17.221.36	AS3269 Telecom Italia S.p.A.	`2.23ms` from Rome, IT
82.51.212.196	AS3269 Telecom Italia S.p.A.	`7.31ms` from Rome, IT
191.183.145.52	AS28573 Claro NXT Telecomunicacoes Ltda	`5.47ms` from Sao Paulo, BR
211.111.161.228	AS45370 BROADBANDIDC	`1.44ms` from Seoul, KR
213.57.101.100	AS12849 Hot-Net internet services Ltd.	`0.92ms` from Tel Aviv, IL
43.141.68.244	AS45090 Shenzhen Tencent Computer Systems Company Limited	`4.52ms` from Tianjin, CN
152.165.32.52	AS2527 Sony Network Communications Inc.	`1.93ms` from Tokyo, JP
188.212.149.132	AS58224 Iran Telecommunication Company PJS	`17.93ms` from Yerevan, AM
84.87.159.36	AS1136 KPN B.V.	`2.59ms` from Amsterdam, NL
31.201.86.68	AS50266 Odido Netherlands B.V.	`4.06ms` from Amsterdam, NL
99.145.83.164	AS7018 AT&T Enterprises, LLC	`6.92ms` from Atlanta, US
186.29.178.228	AS19429 ETB - Colombia	`0.70ms` from Bogota, CO

Traceroute

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

traceroute -a -n -q1 -f5 203.111.199.219

traceroute to 203.111.199.219 (203.111.199.219): 64 hops max, 52 byte packets

5 [] 218.100.9.89 1.035 ms

6 [] 218.100.9.84 10.183 ms

7 [AS7511] 202.208.178.193 9.482 ms

8 [AS7511] 202.208.178.230 9.446 ms

9 [AS7511] 202.208.173.222 9.283 ms

10 [AS7511] 203.111.199.219 13.126 ms

Measurement taken from

IPinfo ProbeNet in Osaka, JP

On December 14th 2025

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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