All IP Ranges
223.0.0.0/8
AS4538 | 223.128.0.0/15

223.128.0.0/15

AS4538 · China Education and Research Network Center

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Registry	APNIC
ID	CDR-CERNET

WHOIS Details

inetnum:        223.128.0.0 - 223.129.255.255
netname:        CDR-CERNET
descr:          China Education and Research Network
descr:          Chengdu Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        origin AS4538
remarks:        confederation
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:07Z
source:         APNIC

irt:            IRT-CERNET-AP
address:        Network Research Center,
address:        Main Bldg, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
fax-no:         +86-10-62785933
e-mail:         abuse@cernet.edu.cn
abuse-mailbox:  abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        abuse@cernet.edu.cn was validated on 2025-08-15
mnt-by:         MAINT-CERNET-AP
last-modified:  2025-11-18T00:26:28Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Research Center,
address:        Main Bldg, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
e-mail:         abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        abuse@cernet.edu.cn was validated on 2025-08-15
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-15T09:38:28Z
source:         APNIC

role:           CERNET Helpdesk
address:        CERNET Center
address:        Beijing 100084, China
country:        CN
phone:          +86-10-6278-4049
fax-no:         +86-10-6278-5933
e-mail:         helpdesk@cernet.edu.cn
remarks:        abuse@cernet.edu.cn
admin-c:        XL1-CN
tech-c:         SZ2-AP
nic-hdl:        CER-AP
mnt-by:         MAINT-CERNET-AP
last-modified:  2020-09-03T09:14:12Z
source:         APNIC

route:          223.128.0.0/15
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2010-07-15T07:00:02Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 223.0.0.0/8

Range	ASN	Company	Num of IPs
223.32.0.0/11	AS9644	SK Telecom	2,097,152
223.144.0.0/12	AS4134	CHINANET HUNAN PROVINCE NETWORK	1,048,576
223.240.0.0/13	AS142608	CHINANET Anhui province network	524,288
223.8.0.0/13	AS4134	CHINANET SHANXI PROVINCE NETWORK	524,288
223.240.0.0/13	AS149178	CHINANET Anhui province network	524,288
223.240.0.0/13	AS132833	CHINANET Anhui province network	524,288
223.240.0.0/13	AS4134	CHINANET Anhui province network	524,288
223.240.0.0/13	AS140527	CHINANET Anhui province network	524,288
223.240.0.0/13	AS134425	CHINANET Anhui province network	524,288
223.132.0.0/14	AS2527	Sony Network Communications Inc.	262,144
223.248.0.0/14	AS9812	Oriental Cable Network Co., Ltd.	262,144
223.16.0.0/14	AS9304	HGC Global Communications Limited	262,144
223.4.0.0/14	AS37963	Aliyun Computing Co., LTD	262,144
223.216.0.0/14	AS4713	NTT DOCOMO BUSINESS,Inc.	262,144
223.4.0.0/14	AS45102	Aliyun Computing Co., LTD	262,144
223.22.0.0/15	AS131591	Asia Pacific On-Line Service Inc.	131,072
223.212.0.0/15	AS17962	ShenZhen Topway Video Communication Co. Ltd.	131,072
223.220.0.0/15	AS4134	CHINANET Qinghai Province Network	131,072
223.220.0.0/15	AS140061	CHINANET Qinghai Province Network	131,072
223.214.0.0/15	AS4134	CHINANET Anhui province network	131,072
223.198.0.0/15	AS4134	CHINANET HAINAN PROVINCE NETWORK	131,072
223.22.0.0/15	AS131142	Asia Pacific On-Line Service Inc.	131,072
223.220.0.0/15	AS132225	CHINANET Qinghai Province Network	131,072
223.192.0.0/15	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	131,072
223.2.0.0/15	AS4538	China Education and Research Network	131,072
223.22.0.0/15	AS17709	Asia Pacific On-Line Service Inc.	131,072
223.220.0.0/15	AS59223	CHINANET Qinghai Province Network	131,072
223.118.0.0/15	AS136989	China Mobile International Limited	131,072
223.118.0.0/15	AS132389	China Mobile International Limited	131,072
223.118.0.0/15	AS58453	China Mobile International Limited	131,072
223.118.0.0/15	AS58411	China Mobile International Limited	131,072
223.118.0.0/15	AS58807	China Mobile International Limited	131,072
223.30.0.0/15	AS9583	Sify Limited	131,072
223.22.0.0/15	AS7482	Asia Pacific On-Line Service Inc.	131,072
223.24.0.0/16	AS132618	True Move Company Limited	65,536
223.24.0.0/16	AS7470	True Move Company Limited	65,536
223.222.0.0/16	AS17849	SK Broadband Co Ltd	65,536
223.200.0.0/16	AS4782	Government Service Network (GSN)	65,536
223.24.0.0/16	AS132061	True Move Company Limited	65,536
223.197.0.0/16	AS4515	PCCW Business Internet Access	65,536
223.29.0.0/17	AS18126	Chubu Telecommunications Co.,Inc.	32,768
223.223.0.0/17	AS18144	Enecom,Inc.	32,768
223.123.0.0/17	AS59257	CMPak Limited	32,768
223.28.128.0/17	AS17597	SK Broadband Co Ltd	32,768
223.197.128.0/17	AS4760	Hong Kong Telecommunications (HKT) Limited Business Internet	32,768
223.26.128.0/17	AS38690	LX	32,768
223.165.128.0/17	AS38661	trizn inc.	32,768
223.28.0.0/17	AS9930	TT DOTCOM SDN BHD	32,768
223.122.128.0/17	AS137872	China Mobile Hong Kong Company Limited	32,768

Hosted domains

There are 7 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
223.128.6.134	electrech.pk	2
223.128.6.132	electrech.com.pk	2
223.128.6.231	shaheencotton.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

Read more

Pingable IPs

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

IP Address	ASN	Details
223.128.158.29	AS4538 China Education and Research Network Center	`4.63ms` from Chengdu, CN
223.129.242.246	AS4538 China Education and Research Network Center	`52.74ms` from Beijing, CN
223.128.144.2	AS4538 China Education and Research Network Center	`4.08ms` from Chengdu, CN
223.129.252.1	AS4538 China Education and Research Network Center	`54.06ms` from Tianjin, CN
223.129.90.6	AS4538 China Education and Research Network Center	`38.02ms` from Beijing, CN
223.128.159.254	AS4538 China Education and Research Network Center	`4.67ms` from Chengdu, 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
147.135.115.239	AS16276 OVH SAS	`1.36ms` from Ashburn, US
52.17.150.47	AS16509 Amazon.com, Inc.	`0.21ms` from Dublin, IE
195.245.173.63	AS9186 ONITELECOM - INFOCOMUNICACOES, S.A.	`0.38ms` from Lisbon, PT
172.89.15.95	AS20001 Charter Communications Inc	`11.37ms` from Los Angeles, US
83.58.108.127	AS3352 TELEFONICA DE ESPANA S.A.U.	`3.72ms` from Madrid, ES
182.91.198.15	AS4837 CHINA UNICOM China169 Backbone	`6.95ms` from Nanning, CN
129.219.213.15	AS2900 Arizona Tri University Network	`0.56ms` from Phoenix, US
117.111.152.111	AS9316 DACOM-PUBNETPLUS	`2.56ms` from Seoul, KR
211.206.57.207	AS9318 SK Broadband Co Ltd	`8.11ms` from Seoul, KR
59.126.17.159	AS3462 Data Communication Business Group	`1.44ms` from Taichung, TW
3.115.115.63	AS16509 Amazon.com, Inc.	`1.31ms` from Tokyo, JP
18.236.5.127	AS16509 Amazon.com, Inc.	`0.11ms` from Boardman, US
20.94.51.31	AS8075 Microsoft Corporation	`0.61ms` from Boydton, US
88.80.233.255	AS31127 SATRO s.r.o.	`7.13ms` from Bratislava, SK
113.7.248.143	AS4837 CHINA UNICOM China169 Backbone	`12.61ms` from Changchun, CN
163.182.93.223	AS6181 Cincinnati Bell Telephone Company LLC	`1.85ms` from Cincinnati, US
46.137.146.47	AS16509 Amazon.com, Inc.	`0.20ms` from Dublin, IE
221.228.198.159	AS138950 Jiangsu Wuxi International IDC network	`5.62ms` from Huai'an, CN
185.224.10.207	AS35032 LLC SIP "NIS"	`0.52ms` from Samara, RU
220.74.158.159	AS4766 Korea Telecom	`2.13ms` from Seoul, KR
115.8.53.95	AS4766 Korea Telecom	`5.81ms` from Seoul, KR
121.129.197.79	AS4766 Korea Telecom	`1.35ms` from Seoul, KR
52.69.158.127	AS16509 Amazon.com, Inc.	`0.21ms` from Tokyo, JP
118.155.71.47	AS2516 KDDI CORPORATION	`17.76ms` from Tokyo, JP
20.71.1.159	AS8075 Microsoft Corporation	`0.23ms` 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 -f4 -m15 223.128.0.20

traceroute to 223.128.0.20 (223.128.0.20): 15 hops max, 52 byte packets

4 [AS4134] 42.203.78.65 0.323 ms

5 [AS4134] 219.149.114.93 3.561 ms

6 *

7 *

8 *

9 *

10 [AS4134] 202.97.118.126 53.238 ms

11 *

12 [AS4538] 101.4.116.242 53.919 ms

13 *

14 *

15 *

Measurement taken from

IPinfo ProbeNet in Liaoyang, CN

On November 15th 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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales