221.12.128.0/18

AS4837  ·  CHINA UNICOM China169 Backbone

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Summary

Country China
Domain chinaunicom.cn
ASN AS4837
Registry APNIC
ID UNICOM-ZJ

WHOIS Details

inetnum:        221.12.0.0 - 221.12.191.255
netname:        UNICOM-ZJ
descr:          China Unicom Zhejiang province network
descr:          China Unicom
country:        CN
admin-c:        CH1302-AP
tech-c:         JQ16-AP
abuse-c:        AC1718-AP
status:         ALLOCATED PORTABLE
remarks:        service provider
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CNCGROUP-ZJ
mnt-routes:     MAINT-CNCGROUP-RR
mnt-irt:        IRT-CU-CN
last-modified:  2025-01-22T13:08:06Z
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:         Jianhuaq Qian
nic-hdl:        JQ16-AP
e-mail:         [email protected]
address:        No 1336,BinAn Road,Hangzhou, Zhejiang,China
phone:          +86-571-28868063
fax-no:         +86-571-28868069
country:        CN
mnt-by:         MAINT-CNCGROUP-ZJ
last-modified:  2013-07-09T07:43:26Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 221.12.0.0/16

Range ASN Company Num of IPs
221.12.192.0/18 AS18144 Enecom,Inc. 16,384

Hosted domains

There are 29 domain names hosted across 27 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
221.12.154.235 leidatech.com 2
221.12.131.95 chinaxpp.com 2
221.12.175.171 okokpro.com 2
221.12.163.3 zcyyw.net 1
221.12.138.143 21js.com 1
221.12.132.22 hengfengtradeshow.com 1
221.12.146.206 zenglinyun.vip 1
221.12.163.39 fenghegu.com 1
221.12.130.98 vanbowoa.com 1
221.12.166.145 rajks.net 1
221.12.145.26 ruipt.com 1
221.12.142.42 ihive.top 1
221.12.173.82 aiforcare.com 1
221.12.145.217 zjshly.com 1
221.12.135.185 zhejiangliheng.com 1
221.12.175.170 pinnettech.com 1
221.12.173.250 mybank.cc 1
221.12.153.78 zseteng.com 1
221.12.164.170 louislong.com 1
221.12.162.2 zpt.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

2,900 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
221.12.157.141 AS4837 CHINA UNICOM China169 Backbone 6.00ms from Ningbo, CN
221.12.144.194 AS4837 CHINA UNICOM China169 Backbone 7.23ms from Hangzhou, CN
221.12.129.177 AS4837 CHINA UNICOM China169 Backbone 7.04ms from Hangzhou, CN
221.12.162.102 AS4837 CHINA UNICOM China169 Backbone 7.04ms from Hangzhou, CN
221.12.175.129 AS4837 CHINA UNICOM China169 Backbone 3.83ms from Hangzhou, CN
221.12.136.53 AS4837 CHINA UNICOM China169 Backbone 6.68ms from Hangzhou, CN
221.12.173.17 AS4837 CHINA UNICOM China169 Backbone 4.33ms from Hangzhou, CN
221.12.176.34 AS4837 CHINA UNICOM China169 Backbone 3.98ms from Ningbo, CN
221.12.163.43 AS4837 CHINA UNICOM China169 Backbone 8.07ms from Hangzhou, CN
221.12.135.165 AS4837 CHINA UNICOM China169 Backbone 6.30ms from Ningbo, CN
221.12.152.111 AS4837 CHINA UNICOM China169 Backbone 5.16ms from Ningbo, CN
221.12.165.193 AS4837 CHINA UNICOM China169 Backbone 8.82ms from Hangzhou, CN
221.12.131.65 AS4837 CHINA UNICOM China169 Backbone 7.23ms from Hangzhou, CN
221.12.134.218 AS4837 CHINA UNICOM China169 Backbone 6.98ms from Ningbo, CN
221.12.145.101 AS4837 CHINA UNICOM China169 Backbone 8.31ms from Hangzhou, CN
221.12.128.94 AS4837 CHINA UNICOM China169 Backbone 5.54ms from Hangzhou, CN
221.12.161.33 AS4837 CHINA UNICOM China169 Backbone 12.50ms from Hangzhou, CN
221.12.156.181 AS4837 CHINA UNICOM China169 Backbone 2.70ms from Ningbo, CN
221.12.138.241 AS4837 CHINA UNICOM China169 Backbone 8.09ms from Hangzhou, CN
221.12.133.33 AS4837 CHINA UNICOM China169 Backbone 7.49ms from Hangzhou, CN
221.12.160.186 AS4837 CHINA UNICOM China169 Backbone 10.11ms from Hangzhou, CN
221.12.170.172 AS4837 CHINA UNICOM China169 Backbone 3.94ms from Hangzhou, CN
221.12.158.9 AS4837 CHINA UNICOM China169 Backbone 2.77ms from Ningbo, CN
221.12.130.97 AS4837 CHINA UNICOM China169 Backbone 6.95ms from Ningbo, CN
221.12.151.89 AS4837 CHINA UNICOM China169 Backbone 9.17ms from Shanghai, 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
136.61.19.18 AS16591 Google Fiber Inc. 6.97ms from Ashburn, US
47.94.17.66 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 1.92ms from Beijing, CN
77.177.150.50 AS6805 Telefonica Germany GmbH & Co.OHG 3.07ms from Duesseldorf, DE
12.144.156.242 AS7018 AT&T Enterprises, LLC 2.22ms from Durham, US
47.118.45.34 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 6.05ms from Hangzhou, CN
105.112.141.146 AS36873 Airtel Networks Limited 1.22ms from Lagos, NG
123.246.213.2 AS4134 CHINANET-BACKBONE 8.32ms from Liaoyang, CN
81.35.217.146 AS3352 TELEFONICA DE ESPANA S.A.U. 4.29ms from Madrid, ES
176.181.163.194 AS5410 Bouygues Telecom SA 2.84ms from Marseille, FR
189.144.89.162 AS8151 UNINET 1.07ms from Mexico City, MX
68.71.39.226 AS10929 eStruxture Data Centers Inc. 0.70ms from Montreal, CA
43.204.134.18 AS16509 Amazon.com, Inc. 0.16ms from Mumbai, IN
73.190.177.34 AS7922 Comcast Cable Communications, LLC 14.63ms from Murfreesboro, US
154.122.184.194 AS12455 Kenyan Post & Telecommunications Company / Telkom Kenya Ltd 12.57ms from Nairobi, KE
190.34.174.146 AS11556 Cable & Wireless Panama 0.73ms from Panama, PA
189.240.44.226 AS8151 UNINET 4.06ms from Santiago de Queretaro, MX
147.185.152.130 AS29852 Honest Networks, LLC 0.94ms from Secaucus, US
180.224.97.178 AS17858 LG POWERCOMM 4.07ms from Seoul, KR
1.98.16.114 AS4766 Korea Telecom 2.20ms from Seoul, KR
45.119.158.2 AS56300 MyRepublic Ltd. 0.68ms from Singapore, SG
66.115.238.130 AS13576 SOUTH DAKOTA NETWORK 1.47ms from Sioux Falls, US
138.252.12.2 AS63900 ZUSO Generation Co., Ltd. 0.26ms from Taipei, TW
62.107.133.162 AS39642 Norlys Digital A/S 17.63ms from Tønder, DK
185.214.173.2 AS203061 UAB code200 0.19ms from Vilnius, LT
123.119.29.178 AS4808 China Unicom Beijing Province Network 3.97ms from Beijing, CN

Traceroute

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

$
traceroute -a -n -q1 -f3 221.12.138.115
traceroute to 221.12.138.115 (221.12.138.115): 64 hops max, 52 byte packets
4 *
5 [AS4837] 219.158.4.93 358.642 ms
6 *
7 *
8 *
9 *
10 [AS4837] 221.12.138.115 326.774 ms
Measurement taken from IPinfo ProbeNet in Sofia, BG
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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