210.21.0.0/17

AS17622  ·  China Unicom Guangzhou network

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Summary

Country China
Domain chinaunicom.cn
ASN AS17622
Registry APNIC
ID UNICOM-GD

WHOIS Details

inetnum:        210.21.0.0 - 210.21.127.255
netname:        UNICOM-GD
descr:          China Unicom Guangdong province network
descr:          China Unicom
country:        CN
admin-c:        CH1302-AP
tech-c:         RP181-AP
abuse-c:        AC1718-AP
status:         ALLOCATED NON-PORTABLE
remarks:        service provider
mnt-by:         MAINT-CNCGROUP
mnt-lower:      MAINT-CNCGROUP-GD
mnt-routes:     MAINT-CNCGROUP-RR
mnt-irt:        IRT-CU-CN
last-modified:  2023-10-21T03:37:28Z
source:         APNIC

irt:            IRT-CU-CN
address:        No.21,Financial Street
address:        Beijing,100033
address:        P.R.China
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CH1302-AP
tech-c:         CH1302-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2025-10-17
mnt-by:         MAINT-CNCGROUP
last-modified:  2025-11-18T00:26:20Z
source:         APNIC

role:           ABUSE CUCN
country:        ZZ
address:        No.21,Financial Street
address:        Beijing,100033
address:        P.R.China
phone:          +000000000
e-mail:         [email protected]
admin-c:        CH1302-AP
tech-c:         CH1302-AP
nic-hdl:        AC1718-AP
remarks:        Generated from irt object IRT-CU-CN
remarks:        [email protected] was validated on 2025-10-17
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2025-10-17T02:26:56Z
source:         APNIC

person:         ChinaUnicom Hostmaster
nic-hdl:        CH1302-AP
e-mail:         [email protected]
address:        No.21,Jin-Rong Street
address:        Beijing,100033
address:        P.R.China
phone:          +86-10-66259764
fax-no:         +86-10-66259764
country:        CN
mnt-by:         MAINT-CNCGROUP
last-modified:  2017-08-17T06:13:16Z
source:         APNIC

person:         runkeng pan
nic-hdl:        RP181-AP
e-mail:         [email protected]
address:        XinShiKong Plaza,No 666 Huangpu Rd. Guangzhou 510627,China
phone:          +86-20-22214174
fax-no:         +86-20-22212266-4174
country:        CN
mnt-by:         MAINT-CNCGROUP-GD
last-modified:  2015-12-16T03:32:02Z
source:         APNIC

route:          210.21.64.0/18
origin:         AS17622
descr:          China Unicom B811&A1218, China Unicom No.21, Jin-Rong Street
mnt-by:         MAINT-CNCGROUP-RR
last-modified:  2023-06-08T06:10:15Z
source:         APNIC

Overlapping Ranges

BGP prefixes that are contained by 210.21.0.0/17

Range ASN Company Num of IPs
210.21.121.0/24 AS17622 guangzhou city 256
210.21.17.0/24 AS17622 guangzhou city 256
210.21.50.0/24 AS17622 guangzhou city 256
210.21.51.0/24 AS17622 guangzhou city 256

Nearby Ranges

BGP prefixes that overlap with 210.21.0.0/16

Range ASN Company Num of IPs
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 are 102 domain names hosted across 75 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
210.21.91.215 utopa-cloud.cn 8
210.21.117.249 cn119.cn 6
210.21.117.220 18x.com.cn 3
210.21.9.254 hiooy.com 3
210.21.9.251 drsays.net 3
210.21.4.71 zjjl.cn 3
210.21.31.89 gacc.com.cn 2
210.21.48.236 gdbri.cn 2
210.21.34.210 gz-maxintl.com 2
210.21.31.88 gac-component.com 2
210.21.113.143 minohk.com 1
210.21.79.150 nfu.edu.cn 1
210.21.13.229 feimofund.com 1
210.21.101.187 wisplat.cn 1
210.21.59.26 mero.cn 1
210.21.112.152 devisite.com 1
210.21.121.181 gdart.site 1
210.21.13.230 gdpedu.org 1
210.21.45.49 hzmbo.com 1
210.21.81.161 dfn-auto.com 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

Pingable IPs

3,652 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
210.21.74.1 AS17622 China Unicom Guangzhou network 3.80ms from Guangzhou, CN
210.21.102.2 AS17622 China Unicom Guangzhou network 2.35ms from Guangzhou, CN
210.21.81.225 AS17622 China Unicom Guangzhou network 2.40ms from Guangzhou, CN
210.21.122.121 AS17622 China Unicom Guangzhou network 1.93ms from Guangzhou, CN
210.21.105.195 AS17622 China Unicom Guangzhou network 1.99ms from Guangzhou, CN
210.21.61.193 AS17622 China Unicom Guangzhou network 1.96ms from Guangzhou, CN
210.21.86.74 AS17622 China Unicom Guangzhou network 2.02ms from Guangzhou, CN
210.21.46.155 AS17622 China Unicom Guangzhou network 1.83ms from Guangzhou, CN
210.21.25.98 AS17622 China Unicom Guangzhou network 2.71ms from Guangzhou, CN
210.21.37.201 AS17622 China Unicom Guangzhou network 1.98ms from Guangzhou, CN
210.21.28.145 AS17622 China Unicom Guangzhou network 1.93ms from Guangzhou, CN
210.21.97.36 AS17622 China Unicom Guangzhou network 2.67ms from Guangzhou, CN
210.21.64.161 AS17622 China Unicom Guangzhou network 3.05ms from Guangzhou, CN
210.21.85.98 AS17622 China Unicom Guangzhou network 2.42ms from Guangzhou, CN
210.21.126.123 AS17622 China Unicom Guangzhou network 2.44ms from Guangzhou, CN
210.21.79.90 AS17622 China Unicom Guangzhou network 1.52ms from Guangzhou, CN
210.21.40.161 AS17622 China Unicom Guangzhou network 1.53ms from Guangzhou, CN
210.21.10.210 AS17622 China Unicom Guangzhou network 2.02ms from Guangzhou, CN
210.21.104.34 AS17622 China Unicom Guangzhou network 2.33ms from Guangzhou, CN
210.21.43.17 AS17622 China Unicom Guangzhou network 2.16ms from Guangzhou, CN
210.21.4.97 AS17622 China Unicom Guangzhou network 2.30ms from Guangzhou, CN
210.21.98.93 AS17622 China Unicom Guangzhou network 2.49ms from Guangzhou, CN
210.21.41.35 AS17622 China Unicom Guangzhou network 1.93ms from Guangzhou, CN
210.21.21.1 AS17622 China Unicom Guangzhou network 2.71ms from Guangzhou, CN
210.21.51.229 AS17622 China Unicom Guangzhou network 2.38ms 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
217.123.97.1 AS33915 Vodafone Libertel B.V. 1.35ms from Amsterdam, NL
92.109.56.1 AS33915 Vodafone Libertel B.V. 2.97ms from Amsterdam, NL
73.134.90.1 AS7922 Comcast Cable Communications, LLC 4.39ms from Ashburn, US
174.54.184.1 AS7922 Comcast Cable Communications, LLC 17.88ms from Ashburn, US
58.136.118.1 AS133481 AIS Fibre 10.86ms from Bangkok, TH
101.26.230.1 AS4837 CHINA UNICOM China169 Backbone 10.69ms from Beijing, CN
52.27.66.33 AS16509 Amazon.com, Inc. 0.18ms from Boardman, US
220.244.13.1 AS7545 TPG Telecom Limited 1.57ms from Brisbane, AU
213.249.102.49 AS3356 Level 3 Parent, LLC 0.65ms from Brussels, BE
81.24.16.177 AS6663 Euroweb Romania S.R.L. 0.47ms from Bucharest, RO
181.167.4.1 AS7303 Telecom Argentina S.A. 0.80ms from Buenos Aires, AR
190.16.86.1 AS7303 Telecom Argentina S.A. 1.34ms from Buenos Aires, AR
104.157.86.1 AS852 TELUS Communications Inc. 1.73ms from Calgary, CA
152.110.140.1 AS20011 Dimension Data 1.07ms from Cape Town, ZA
43.245.136.209 AS55839 Microsense Private Limited 0.65ms from Chennai, IN
121.72.234.1 AS4768 One New Zealand Group Limited 11.89ms from Christchurch, NZ
81.25.151.81 AS59702 Junet AB 8.03ms from Copenhagen, DK
85.83.151.129 AS9158 Telenor A/S 6.01ms from Copenhagen, DK
139.84.170.65 AS20473 The Constant Company, LLC 0.13ms from Delhi, IN
72.249.248.129 AS30688 FastTrack Communications Inc. 5.01ms from Denver, US
52.48.80.193 AS16509 Amazon.com, Inc. 0.18ms from Dublin, IE
79.97.96.1 AS6830 Liberty Global Europe Holding B.V. 3.14ms from Dublin, IE
88.74.222.129 AS3209 Vodafone GmbH 6.46ms from Duesseldorf, DE
81.107.214.1 AS5089 Virgin Media Limited 3.65ms from Erith, GB
1.95.228.129 AS55990 Huawei Cloud Service data center 1.16ms from Guiyang, CN

Traceroute

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

$
traceroute -a -n -q1 -f5 210.21.11.227
traceroute to 210.21.11.227 (210.21.11.227): 64 hops max, 52 byte packets
5 [AS749] 11.94.155.105 0.922 ms
6 *
7 *
8 *
9 *
10 [AS17622] 210.21.11.227 1.764 ms
Measurement taken from IPinfo ProbeNet in Guangzhou, CN
On

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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