210.21.229.0/24

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 210.21.229.0/24

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
210.21.17.0/24	AS17622	guangzhou city	256
210.21.51.0/24	AS17622	guangzhou city	256
210.21.237.0/24	AS17623	Zhaoshangtianyu	256
210.21.50.0/24	AS17622	guangzhou city	256
210.21.121.0/24	AS17622	guangzhou city	256

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
210.21.229.163	yashandb.cn	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

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

IP Address	ASN	Details
210.21.229.45	AS17623 China Unicom Shenzen network	`5.01ms` from Shenzhen, 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
77.165.121.216	AS1136 KPN B.V.	`1.51ms` from Amsterdam, NL
20.121.219.24	AS8075 Microsoft Corporation	`0.39ms` from Ashburn, US
198.101.9.56	AS13886 Cloud South	`1.18ms` from Boca Raton, US
174.102.195.88	AS10796 Charter Communications Inc	`10.63ms` from Chicago, US
34.251.99.40	AS16509 Amazon.com, Inc.	`0.20ms` from Dublin, IE
91.2.205.56	AS3320 Deutsche Telekom AG	`2.56ms` from Duesseldorf, DE
88.70.69.72	AS3209 Vodafone GmbH	`18.36ms` from Hamburg, DE
85.95.238.56	AS206991 Iksir Internet Hizmetleri A.S.	`0.30ms` from Istanbul, TR
45.237.209.8	AS268298 TSN - Torres Soluções Network	`3.97ms` from Joao Pessoa, BR
95.236.110.88	AS3269 Telecom Italia S.p.A.	`5.56ms` from Milan, IT
71.244.184.40	AS701 Verizon Business	`4.03ms` from Philadelphia, US
97.185.180.72	AS6167 Verizon Business	`7.21ms` from Portland, US
134.190.83.232	AS8111 Dalhousie University	`16.84ms` from Providence, US
39.150.72.8	AS24445 Henan Mobile Communications Co.,Ltd	`9.59ms` from Zhengzhou, CN
173.185.69.72	AS7029 Windstream Communications LLC	`6.50ms` from Ashburn, US
49.233.221.216	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.04ms` from Beijing, CN
173.28.222.56	AS30036 Mediacom Communications Corp	`13.87ms` from Chicago, US
65.28.102.104	AS11427 Charter Communications Inc	`18.84ms` from Dallas, US
54.38.235.72	AS16276 OVH SAS	`0.07ms` from Gravelines, FR
85.16.149.184	AS9145 EWE TEL GmbH	`4.33ms` from Hamburg, DE
4.188.2.120	AS8075 Microsoft Corporation	`0.13ms` from Lohogaon, IN
92.36.144.232	AS9146 BIHNET Autonomus System	`2.07ms` from Sarajevo, BA
51.15.75.8	AS12876 SCALEWAY S.A.S.	`0.31ms` from Amsterdam, NL
34.38.134.248	AS396982 Google LLC	`0.17ms` from Brussels, BE
89.134.141.120	AS21334 One Hungary Ltd.	`9.69ms` from Budapest, HU

Traceroute

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

traceroute -a -n -q1 -f7 210.21.229.65

traceroute to 210.21.229.65 (210.21.229.65): 64 hops max, 52 byte packets

7 [AS135061] 211.95.148.49 4.241 ms

8 *

9 [AS17623] 210.21.229.65 5.524 ms

Measurement taken from

IPinfo ProbeNet in Shenzhen, CN

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.

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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