210.21.237.0/24

AS17623 · China Unicom Shenzen network

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Summary

Country	China
Domain	chinaunicom.cn
ASN	AS17623
Parent Range	210.21.192.0/18
Registry	APNIC
ID	ZHAOSHANGTIANYU

WHOIS Details

inetnum:        210.21.237.0 - 210.21.237.255
netname:        ZHAOSHANGTIANYU
descr:          Zhaoshangtianyu
descr:          Shenzhen
country:        CN
admin-c:        TC254-AP
tech-c:         TC254-AP
mnt-by:         MAINT-CN-ZM28
status:         ASSIGNED NON-PORTABLE
last-modified:  2008-09-04T06:57:03Z
source:         APNIC

person:         TECH GROUP CNC
nic-hdl:        TC254-AP
address:        9/F, Building A, Corporate Square, No. 35 Financial Street,
address:        Xicheng District, Beijing 100032, P.R.China
country:        CN
phone:          +86-10-88093588
fax-no:         +86-10-88091442
e-mail:         [email protected]
mnt-by:         MAINT-CN-ZM28
last-modified:  2017-08-17T06:13:18Z
source:         APNIC

route:          210.21.0.0/16
descr:          CNC Group CncNet
country:        CN
origin:         AS9929
mnt-by:         MAINT-CNCGROUP-RR
last-modified:  2008-09-04T07:54:45Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 210.21.237.0/24

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
210.21.50.0/24	AS17622	guangzhou city	256
210.21.121.0/24	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

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

IP Address	ASN	Details
210.21.237.225	AS17623 China Unicom Shenzen network	`4.86ms` 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
23.47.24.8	AS16625 Akamai Technologies, Inc.	`0.23ms` from Ashburn, US
202.28.76.216	AS4621 UNINET-TH	`2.52ms` from Bangkok, TH
213.195.100.184	AS15704 XTRA TELECOM S.A.	`1.07ms` from Barcelona, ES
134.161.94.8	AS22594 University of Northern Iowa	`5.22ms` from Des Moines, US
185.35.14.8	AS60175 WORTMANN AG	`4.05ms` from Duesseldorf, DE
86.18.86.72	AS5089 Virgin Media Limited	`5.07ms` from London, GB
18.230.113.216	AS16509 Amazon.com, Inc.	`0.16ms` from Osasco, BR
83.150.246.8	AS197205 Numberly SASU	`0.40ms` from Paris, FR
20.34.38.40	AS8070 Microsoft Corporation	`1.06ms` from San Antonio, US
192.36.29.120	AS3301 Telia Company AB	`1.05ms` from Stockholm, SE
125.200.51.56	AS4713 NTT DOCOMO BUSINESS,Inc.	`13.98ms` from Tokyo, JP
60.61.123.168	AS9824 JCOM Co., Ltd.	`7.73ms` from Tokyo, JP
105.107.204.56	AS36947 Telecom Algeria	`9.60ms` from Tunis, TN
77.164.34.72	AS1136 KPN B.V.	`1.03ms` from Amsterdam, NL
82.174.106.200	AS50266 Odido Netherlands B.V.	`4.64ms` from Amsterdam, NL
120.151.158.8	AS1221 Telstra Limited	`2.33ms` from Brisbane, AU
201.252.143.216	AS7303 Telecom Argentina S.A.	`1.71ms` from Buenos Aires, AR
111.23.93.200	AS56047 China Mobile communications corporation	`5.72ms` from Changsha, CN
52.173.75.152	AS8075 Microsoft Corporation	`0.35ms` from Des Moines, US
149.109.131.168	AS25019 Saudi Telecom Company JSC	`5.78ms` from Jeddah, SA
104.2.81.40	AS7018 AT&T Enterprises, LLC	`12.52ms` from Los Angeles, US
93.223.182.104	AS3320 Deutsche Telekom AG	`2.97ms` from Nuernberg, DE
92.103.32.40	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`2.65ms` from Paris, FR
62.210.165.120	AS12876 SCALEWAY S.A.S.	`0.23ms` from Amsterdam, NL
145.255.134.8	AS60781 LeaseWeb Netherlands B.V.	`0.25ms` from Amsterdam, NL

Traceroute

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

traceroute -a -n -q1 -f5 210.21.237.225

traceroute to 210.21.237.225 (210.21.237.225): 64 hops max, 52 byte packets

5 [AS749] 11.94.155.105 0.844 ms

6 *

7 *

8 *

9 *

10 [AS17623] 210.21.237.225 4.873 ms

Measurement taken from

IPinfo ProbeNet in Guangzhou, CN

On December 14th 2025

What are IP address ranges?

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