121.100.8.0/21

AS23776 · NEC Corporation

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Summary

Country	Japan
Domain	nec.com
ASN	AS23776
Registry	JPNIC
ID	NEC-CIDR-BLK-JP

WHOIS Details

inetnum:        121.100.8.0 - 121.100.15.255
netname:        NEC-CIDR-BLK-JP
descr:          NEC Corporation
remarks:        Email address for spam or abuse complaints : itsmc@cpfs.jp.nec.com
country:        JP
admin-c:        NO25204JP
tech-c:         KA37903JP
tech-c:         NO25204JP
last-modified:  2023-03-30T01:20:03Z
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

Nearby Ranges

BGP prefixes that overlap with 121.100.0.0/16

Range	ASN	Company	Num of IPs
121.100.32.0/20	AS38258	Asia Network for Sony companies, subsidiaries,	4,096
121.100.0.0/21	AS38158	PT. Cyberindo Aditama	2,048
121.100.48.0/21	AS38742	Afghan Wireless Communication Company	2,048
121.100.88.0/21	AS18334	Gyounggidongbu cable tv co., Ltd.	2,048
121.100.120.0/22	AS10036	DLIVE Gyeongdogn Cable TV	1,024
121.100.68.0/22	AS10036	Gyounggidongbu cable tv co., Ltd.	1,024
121.100.124.0/22	AS18334	Gyounggidongbu cable tv co., Ltd.	1,024
121.100.16.0/22	AS9341	PT Indonesia Comnets Plus	1,024
121.100.22.0/23	AS9341	PT Indonesia Comnets Plus	512

Hosted domains

There are 3 domain names hosted across 4 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
121.100.12.189	daiichihoki.co.jp	1
121.100.12.139	jsndi.or.jp	1
121.100.12.138	jsndi.or.jp	1
121.100.12.235	sankyo-shodoku.net	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

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Pingable IPs

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

IP Address	ASN	Details
121.100.8.69	AS23776 NEC Corporation	`3.19ms` from Tokyo, JP
121.100.14.69	AS23776 NEC Corporation	`1.81ms` from Tokyo, JP
121.100.12.33	AS23776 NEC Corporation	`1.52ms` from Tokyo, JP
121.100.13.109	AS23776 NEC Corporation	`2.18ms` from Tokyo, JP
121.100.11.182	AS23776 NEC Corporation	`1.35ms` 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
101.19.96.229	AS4837 CHINA UNICOM China169 Backbone	`10.05ms` from Beijing, CN
46.139.67.213	AS5483 Magyar Telekom Plc.	`4.24ms` from Budapest, HU
119.84.254.53	AS4134 CHINANET-BACKBONE	`6.68ms` from Chongqing, CN
121.198.76.85	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`7.04ms` from Hangzhou, CN
118.70.194.133	AS18403 FPT Telecom Company	`0.37ms` from Hanoi, VN
192.70.218.5	AS397110 ConocoPhillips Company	`0.80ms` from Houston, US
109.148.11.117	AS2856 British Telecommunications PLC	`2.68ms` from London, GB
62.231.166.101	AS29072 Regional Digital Telecommunication Company LLC	`9.98ms` from Novosibirsk, RU
96.59.193.37	AS33363 Charter Communications, Inc	`10.05ms` from Orlando, US
133.175.79.53	AS2519 ARTERIA Networks Corporation	`5.47ms` from Osaka, JP
190.219.255.101	AS18809 Cable Onda	`7.86ms` from Panama, PA
194.250.19.37	AS3215 Orange S.A.	`1.45ms` from Paris, FR
24.44.125.37	AS6128 Cablevision Systems Corp.	`9.49ms` from Piscataway, US
45.139.96.5	AS209902 RAI WAY S.P.A.	`0.83ms` from Rome, IT
175.248.168.69	AS4766 Korea Telecom	`5.75ms` from Seoul, KR
59.28.148.165	AS4766 Korea Telecom	`7.16ms` from Seoul, KR
60.71.10.229	AS17676 SoftBank Corp.	`2.96ms` from Tokyo, JP
60.38.60.117	AS4713 NTT DOCOMO BUSINESS,Inc.	`7.21ms` from Tokyo, JP
209.163.149.149	AS3549 Level 3 Parent, LLC	`0.70ms` from Tulsa, US
39.100.92.229	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.17ms` from Zhangjiakou, CN
213.42.36.69	AS5384 Emirates Internet	`2.57ms` from Al Fujairah City, AE
50.59.44.117	AS3549 Level 3 Parent, LLC	`15.39ms` from Ashburn, US
120.92.209.69	AS59019 Beijing Kingsoft Cloud Internet Technology Co., Ltd	`2.82ms` from Beijing, CN
81.164.181.69	AS6848 Telenet BV	`11.54ms` from Brussels, BE
197.36.187.85	AS8452 TE-AS	`6.39ms` from Cairo, EG

Traceroute

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

traceroute -a -n -q1 -m8 121.100.10.8

traceroute to 121.100.10.8 (121.100.10.8): 8 hops max, 52 byte packets

1 [AS15169] 142.250.208.159 132.866 ms

2 *

3 *

4 [AS2497] 58.138.82.122 131.524 ms

5 [AS2497] 58.138.113.34 131.784 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Mumbai, IN

On January 19th 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.

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