221.231.128.0/21

AS137702 · Nanjing, Jiangsu Province, P.R.China.

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Summary

Country	China
Domain	chinatelecom.cn
ASN	AS137702
Parent Range	221.224.0.0/13
Registry	APNIC
ID	CHINANET-JS

WHOIS Details

inetnum:        221.224.0.0 - 221.231.255.255
netname:        CHINANET-JS
descr:          CHINANET jiangsu province network
descr:          China Telecom
descr:          A12,Xin-Jie-Kou-Wai Street
descr:          Beijing 100088
country:        CN
admin-c:        CH93-AP
tech-c:         CJ186-AP
abuse-c:        AC1573-AP
status:         ALLOCATED PORTABLE
remarks:        This object can only modify by APNIC hostmaster
remarks:        If you wish to modify this object details please
remarks:        send email to hostmaster@apnic.net with your
remarks:        organisation account name in the subject line.
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CHINANET-JS
mnt-routes:     MAINT-CHINANET-JS
mnt-irt:        IRT-CHINANET-CN
last-modified:  2021-06-15T08:06:37Z
source:         APNIC

irt:            IRT-CHINANET-CN
address:        No.31 ,jingrong street,beijing
address:        100032
e-mail:         anti-spam@chinatelecom.cn
abuse-mailbox:  anti-spam@chinatelecom.cn
admin-c:        CH93-AP
tech-c:         CH93-AP
auth:           # Filtered
remarks:        anti-spam@chinatelecom.cn was validated on 2025-04-24
mnt-by:         MAINT-CHINANET
last-modified:  2025-09-04T00:59:42Z
source:         APNIC

role:           ABUSE CHINANETCN
country:        ZZ
address:        No.31 ,jingrong street,beijing
address:        100032
phone:          +000000000
e-mail:         anti-spam@chinatelecom.cn
admin-c:        CH93-AP
tech-c:         CH93-AP
nic-hdl:        AC1573-AP
remarks:        Generated from irt object IRT-CHINANET-CN
remarks:        anti-spam@chinatelecom.cn was validated on 2025-04-24
abuse-mailbox:  anti-spam@chinatelecom.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-04-24T03:21:54Z
source:         APNIC

role:           CHINANET JIANGSU
address:        260 Zhongyang Road,Nanjing 210037
country:        CN
phone:          +86-25-87799222
e-mail:         jsipmanager@163.com
remarks:        send anti-spam reports tojsipmanager@163.com
remarks:        send abuse reports tojsipmanager@163.com
remarks:        times in GMT+8
remarks:        www.jsinfo.net
admin-c:        CH360-AP
tech-c:         CS306-AP
tech-c:         CN142-AP
nic-hdl:        CJ186-AP
notify:         jsipmanager@163.com
mnt-by:         MAINT-CHINANET-JS
last-modified:  2022-08-05T15:34:47Z
source:         APNIC

person:         Chinanet Hostmaster
nic-hdl:        CH93-AP
e-mail:         anti-spam@chinatelecom.cn
address:        No.31 ,jingrong street,beijing
address:        100032
phone:          +86-10-58501724
fax-no:         +86-10-58501724
country:        CN
mnt-by:         MAINT-CHINANET
last-modified:  2022-02-28T06:53:44Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 221.231.128.0/21

Range	ASN	Company	Num of IPs
221.224.0.0/13	AS4809	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS131325	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS134756	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS134770	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS137697	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS137702	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS138950	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS140292	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS146966	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS23650	CHINANET jiangsu province network	524,288
221.224.0.0/13	AS4134	CHINANET jiangsu province network	524,288

Hosted domains

There are 9 domain names hosted across 5 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
221.231.135.166	xn--fjq35lu5y.xn--ses554g	4
221.231.135.227	htzjtz.com.cn	2
221.231.134.227	tiny.com.cn	1
221.231.135.164	htscamc.com	1
221.231.128.18	5ibp.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

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

IP Address	ASN	Details
221.231.135.193	AS137702 Nanjing, Jiangsu Province, P.R.China.	`7.62ms` from Nanjing, 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
138.88.169.101	AS701 Verizon Business	`1.81ms` from Ashburn, US
150.165.1.245	AS1916 Rede Nacional de Ensino e Pesquisa	`0.40ms` from Campina Grande, BR
18.217.59.37	AS16509 Amazon.com, Inc.	`0.15ms` from Columbus, US
72.29.102.133	AS17378 TierPoint, LLC	`0.73ms` from Dallas, US
130.180.46.5	AS3209 Vodafone GmbH	`7.15ms` from Frankfurt am Main, DE
91.22.187.21	AS3320 Deutsche Telekom AG	`8.11ms` from Frankfurt am Main, DE
80.3.204.229	AS5089 Virgin Media Limited	`9.26ms` from London, GB
189.251.50.181	AS8151 UNINET	`2.28ms` from Mexico City, MX
183.207.194.197	AS56046 China Mobile communications corporation	`2.11ms` from Nanjing, CN
126.187.163.165	AS17676 SoftBank Corp.	`5.79ms` from Osaka, JP
41.211.48.101	AS327765 Swazi MTN Ltd	`7.69ms` from Pretoria, ZA
112.250.133.101	AS4837 CHINA UNICOM China169 Backbone	`7.35ms` from Qingdao, CN
186.238.103.229	AS10429 TELEFÔNICA BRASIL S.A	`0.45ms` from Sao Paulo, BR
124.237.76.69	AS4134 CHINANET-BACKBONE	`11.21ms` from Shijiazhuang, CN
174.89.109.149	AS577 Bell Canada	`1.45ms` from Toronto, CA
120.194.103.69	AS24445 Henan Mobile Communications Co.,Ltd	`7.96ms` from Zhengzhou, CN
203.7.88.213	AS7545 TPG Telecom Limited	`13.25ms` from Adelaide, AU
145.77.249.5	AS39686 Eurofiber Nederland BV	`1.99ms` from Amsterdam, NL
20.33.36.117	AS8069 Microsoft Corporation	`0.21ms` from Amsterdam, NL
76.12.201.37	AS20021 Ntirety, Inc.	`4.23ms` from Ashburn, US
108.32.38.133	AS701 Verizon Business	`6.11ms` from Ashburn, US
104.0.62.5	AS7018 AT&T Enterprises, LLC	`18.33ms` from Chicago, US
97.131.82.181	AS6167 Verizon Business	`9.92ms` from Los Angeles, US
12.125.69.85	AS7018 AT&T Enterprises, LLC	`4.03ms` from Los Angeles, US
79.7.224.181	AS3269 Telecom Italia S.p.A.	`1.87ms` from Milan, IT

Traceroute

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

traceroute -a -n -q1 -f2 -m9 221.231.128.77

traceroute to 221.231.128.77 (221.231.128.77): 9 hops max, 52 byte packets

2 [AS20278] 64.44.164.129 0.148 ms

3 *

4 *

5 *

6 [AS174] 154.54.40.110 13.536 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Jacksonville, US

On September 11th 2025

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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