210.21.238.0/24

AS17623 · China Unicom Shenzen network

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Summary

Country	China
Domain	china-netcom.com
ASN	AS17623
Parent Range	210.21.192.0/18
Registry	APNIC
ID	SHENZHEN-CNC

WHOIS Details

inetnum:        210.21.192.0 - 210.21.255.255
netname:        SHENZHEN-CNC
country:        CN
descr:          shenzhen branch, china netcom corp
admin-c:        YS224-AP
tech-c:         YS224-AP
status:         ALLOCATED NON-PORTABLE
changed:        guoyb@china-netcom.com 20031222
mnt-by:         MAINT-CN-ZM28
mnt-lower:      MAINT-CN-SY28
source:         APNIC

person:         yumei sun
nic-hdl:        YS224-AP
e-mail:         sz-ipaddress@china-netcom.com
address:        china netcom
address:        shenzhen
phone:          +86-0755-6983588
country:        CN
changed:        moujh@china-netcom.com 20030827
mnt-by:         MAINT-CN-ZM28
source:         APNIC

route:          210.21.0.0/16
descr:          CNC Group CncNet
country:        CN
origin:         AS9929
mnt-by:         MAINT-CNCGROUP-RR
changed:        abuse@cnc-noc.net 20060330
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 210.21.238.0/24

Range	ASN	Company	Num of IPs
210.21.192.0/18	AS17623	shenzhen branch, china netcom corp	16,384

Nearby Ranges

BGP prefixes that overlap with 210.21.0.0/16

Range	ASN	Company	Num of IPs
210.21.0.0/17	AS17622	China Unicom Guangdong province network	32,768
210.21.192.0/18	AS17623	shenzhen branch, china netcom corp	16,384
210.21.121.0/24	AS17622	guangzhou city	256
210.21.51.0/24	AS17622	guangzhou city	256
210.21.237.0/24	AS17623	Zhaoshangtianyu	256
210.21.17.0/24	AS17622	guangzhou city	256
210.21.50.0/24	AS17622	guangzhou city	256

Hosted domains

There are no domains currently hosted on this ASN.

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

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

IP Address	ASN	Details
210.21.238.99	AS17623 China Unicom Shenzen network	`5.67ms` from Guangzhou, CN

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
79.214.147.168	AS3320 Deutsche Telekom AG	`5.33ms` from Frankfurt am Main, DE
222.218.14.184	AS4134 CHINANET BACKBONE	`15.34ms` from Guiyang, CN
185.99.154.120	AS51522 ONLINE LLC	`15.01ms` from Krasnodar, RU
81.132.67.168	AS2856 British Telecommunications PLC	`7.68ms` from London, GB
14.2.158.24	AS4739 Internode Pty Ltd	`13.12ms` from Melbourne, AU
123.48.231.136	AS18126 Chubu Telecommunications Company, Inc.	`3.54ms` from Osaka, JP
1.243.117.152	AS9318 SK Broadband Co Ltd	`1.77ms` from Seoul, KR
1.173.186.8	AS3462 Data Communication Business Group	`4.27ms` from Taichung, TW
99.251.111.232	AS812 Rogers Communications Canada Inc.	`5.37ms` from Toronto, CA
91.149.199.104	AS198401 Geckonet Sp. z o. o.	`6.21ms` from Warsaw, PL
169.63.94.232	AS36351 IBM Cloud	`0.44ms` from Ashburn, US
13.247.239.184	AS16509 Amazon.com, Inc.	`0.12ms` from Cape Town, ZA
80.177.21.40	AS5378 Vodafone Limited	`5.50ms` from London, GB
73.116.209.120	AS7922 Comcast Cable Communications, LLC	`8.35ms` from Los Angeles, US
34.120.11.88	AS396982 Google LLC	`0.07ms` from Melbourne, AU
60.130.195.8	AS17676 SoftBank Corp.	`3.57ms` from Osaka, JP
107.20.233.88	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
121.139.155.248	AS4766 Korea Telecom	`1.57ms` from Seoul, KR
92.112.72.232	AS9009 M247 Europe SRL	`0.15ms` from Stockholm, SE
185.241.208.184	AS210558 1337 Services GmbH	`1.21ms` from Warsaw, PL
112.51.7.248	AS9808 China Mobile Communications Group Co., Ltd.	`6.57ms` from Xiamen, CN
34.145.134.200	AS396982 Google LLC	`0.12ms` from Ashburn, US
94.33.123.88	AS210218 Open Fiber S.P.A.	`0.98ms` from Bari, IT
52.32.235.24	AS16509 Amazon.com, Inc.	`0.20ms` from Boardman, US
185.94.28.56	AS42473 Anexia Cloud Solutions GmbH	`0.53ms` from Frankfurt am Main, DE

Traceroute

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

traceroute -a -n -q1 -f7 210.21.238.26

traceroute to 210.21.238.26 (210.21.238.26): 64 hops max, 52 byte packets

7 [AS17816] 120.80.137.101 2.312 ms

8 *

9 *

10 [AS17623] 120.80.161.74 7.002 ms

11 *

12 *

13 [AS17623] 210.21.238.26 7.068 ms

Measurement taken from

IPinfo ProbeNet in Guangzhou, CN

On April 25th 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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