223.2.0.0/15

AS4538 · China Education and Research Network Center

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Summary

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

WHOIS Details

inetnum:        223.2.0.0 - 223.3.255.255
netname:        NJR-CERNET
descr:          China Education and Research Network
descr:          Nanjing 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:  2020-09-03T09:16:12Z
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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        [email protected] 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:         [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        [email protected] was validated on 2025-08-15
abuse-mailbox:  [email protected]
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:         [email protected]
remarks:        [email protected]
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:          223.2.0.0/15
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2010-07-15T07:00:01Z
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	AS4134	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	AS134425	CHINANET Anhui province network	524,288
223.240.0.0/13	AS140527	CHINANET Anhui province network	524,288
223.240.0.0/13	AS132833	CHINANET Anhui province network	524,288
223.240.0.0/13	AS142608	CHINANET Anhui province network	524,288
223.132.0.0/14	AS2527	Sony Network Communications Inc.	262,144
223.4.0.0/14	AS37963	Aliyun Computing Co., LTD	262,144
223.16.0.0/14	AS9304	HGC Global Communications Limited	262,144
223.248.0.0/14	AS9812	Oriental Cable Network Co., Ltd.	262,144
223.4.0.0/14	AS45102	Aliyun Computing Co., LTD	262,144
223.216.0.0/14	AS4713	NTT DOCOMO BUSINESS,Inc.	262,144
223.192.0.0/15	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	131,072
223.220.0.0/15	AS4134	CHINANET Qinghai Province Network	131,072
223.128.0.0/15	AS4538	China Education and Research Network	131,072
223.214.0.0/15	AS4134	CHINANET Anhui province network	131,072
223.118.0.0/15	AS58807	China Mobile International Limited	131,072
223.22.0.0/15	AS7482	Asia Pacific On-Line Service Inc.	131,072
223.198.0.0/15	AS4134	CHINANET HAINAN PROVINCE NETWORK	131,072
223.118.0.0/15	AS136989	China Mobile International Limited	131,072
223.22.0.0/15	AS131142	Asia Pacific On-Line Service Inc.	131,072
223.22.0.0/15	AS17709	Asia Pacific On-Line Service Inc.	131,072
223.118.0.0/15	AS132389	China Mobile International Limited	131,072
223.220.0.0/15	AS140061	CHINANET Qinghai Province Network	131,072
223.220.0.0/15	AS132225	CHINANET Qinghai Province Network	131,072
223.22.0.0/15	AS131591	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	AS58453	China Mobile International Limited	131,072
223.30.0.0/15	AS9583	Sify Limited	131,072
223.118.0.0/15	AS58411	China Mobile International Limited	131,072
223.212.0.0/15	AS17962	ShenZhen Topway Video Communication Co. Ltd.	131,072
223.222.0.0/16	AS17849	SK Broadband Co Ltd	65,536
223.197.0.0/16	AS4515	PCCW Business Internet Access	65,536
223.24.0.0/16	AS132618	True Move Company Limited	65,536
223.24.0.0/16	AS132061	True Move Company Limited	65,536
223.24.0.0/16	AS7470	True Move Company Limited	65,536
223.200.0.0/16	AS4782	Government Service Network (GSN)	65,536
223.131.0.0/17	AS9689	TBROAD DobongGangbukGwangjinSeongdong	32,768
223.28.0.0/17	AS9930	TT DOTCOM SDN BHD	32,768
223.120.128.0/17	AS58807	China Mobile Communications Corporation	32,768
223.197.128.0/17	AS4760	Hong Kong Telecommunications (HKT) Limited Business Internet	32,768
223.165.128.0/17	AS38661	trizn inc.	32,768
223.122.128.0/17	AS137872	China Mobile Hong Kong Company Limited	32,768
223.123.0.0/17	AS59257	CMPak Limited	32,768
223.131.0.0/17	AS38096	TBROAD DobongGangbukGwangjinSeongdong	32,768
223.26.128.0/17	AS38690	LX	32,768

Hosted domains

There are 15 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
223.2.96.241	4gi.org	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

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

IP Address	ASN	Details
223.2.160.1	AS4538 China Education and Research Network Center	`13.56ms` from Shanghai, CN
223.2.198.87	AS4538 China Education and Research Network Center	`6.96ms` from Shanghai, CN
223.2.199.183	AS4538 China Education and Research Network Center	`7.13ms` from Shanghai, CN
223.2.200.1	AS4538 China Education and Research Network Center	`6.94ms` from Shanghai, CN
223.2.197.165	AS4538 China Education and Research Network Center	`7.68ms` from Shanghai, CN
223.2.163.1	AS4538 China Education and Research Network Center	`16.34ms` from Shanghai, CN
223.2.194.73	AS4538 China Education and Research Network Center	`7.05ms` from Shanghai, CN
223.2.201.254	AS4538 China Education and Research Network Center	`7.62ms` from Shanghai, CN
223.2.162.1	AS4538 China Education and Research Network Center	`16.40ms` from Shanghai, CN
223.2.183.52	AS4538 China Education and Research Network Center	`11.71ms` from Shanghai, CN
223.2.152.33	AS4538 China Education and Research Network Center	`11.98ms` from Shanghai, CN
223.2.193.123	AS4538 China Education and Research Network Center	`7.21ms` from Shanghai, CN
223.2.164.1	AS4538 China Education and Research Network Center	`16.64ms` from Shanghai, CN
223.2.9.98	AS4538 China Education and Research Network Center	`6.80ms` from Shanghai, CN
223.2.10.78	AS4538 China Education and Research Network Center	`6.87ms` from Shanghai, CN
223.2.192.254	AS4538 China Education and Research Network Center	`7.76ms` from Shanghai, CN
223.3.65.254	AS4538 China Education and Research Network Center	`7.37ms` from Shanghai, CN
223.2.96.49	AS4538 China Education and Research Network Center	`7.51ms` 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
71.28.89.127	AS7029 Windstream Communications LLC	`11.04ms` from Atlanta, US
20.96.95.159	AS8075 Microsoft Corporation	`0.29ms` from Boydton, US
94.224.163.159	AS6848 Telenet BV	`7.32ms` from Brussels, BE
34.240.24.127	AS16509 Amazon.com, Inc.	`0.17ms` from Dublin, IE
194.125.32.159	AS2110 Enet Communications LIMITED	`2.78ms` from Dublin, IE
79.210.225.31	AS3320 Deutsche Telekom AG	`8.69ms` from Frankfurt am Main, DE
103.196.163.223	AS132165 Connect Communications	`1.64ms` from Karachi, PK
90.244.234.127	AS5378 Vodafone Limited	`6.20ms` from London, GB
5.71.43.111	AS5607 Sky UK Limited	`2.56ms` from London, GB
66.127.3.159	AS7018 AT&T Enterprises, LLC	`2.34ms` from Los Angeles, US
92.185.125.223	AS12479 Orange Espagne SA	`10.63ms` from Madrid, ES
189.171.155.95	AS8151 UNINET	`1.83ms` from Mexico City, MX
13.38.23.191	AS16509 Amazon.com, Inc.	`0.15ms` from Paris, FR
54.175.163.63	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
52.72.103.63	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
115.92.82.111	AS3786 LG DACOM Corporation	`3.53ms` from Seoul, KR
35.234.204.47	AS396982 Google LLC	`0.55ms` from Singapore, SG
38.131.237.159	AS21859 Zenlayer Inc	`0.46ms` from Tokyo, JP
131.147.82.175	AS2527 Sony Network Communications Inc.	`2.60ms` from Tokyo, JP
41.228.242.239	AS37693 OOREDOO TUNISIE SA	`9.86ms` from Tunis, TN
140.78.71.31	AS1205 University Linz	`3.15ms` from Vienna, AT
91.185.114.255	AS41937 TELEKOM SRBIJA a.d.	`0.52ms` from Belgrade, RS
35.80.214.31	AS16509 Amazon.com, Inc.	`0.17ms` from Boardman, US
73.243.110.79	AS7922 Comcast Cable Communications, LLC	`5.33ms` from Denver, US
47.110.86.127	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`2.11ms` from Hangzhou, CN

Traceroute

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

traceroute -a -n -q1 -f2 -m13 223.2.70.210

traceroute to 223.2.70.210 (223.2.70.210): 13 hops max, 52 byte packets

2 [AS12129] 207.91.236.84 1.904 ms

3 [AS12129] 207.91.239.242 2.267 ms

4 *

5 *

6 [AS6939] 184.104.188.149 43.459 ms

7 *

8 *

9 [] 123.255.91.118 189.747 ms

10 [AS4538] 101.4.114.181 227.969 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Grand Rapids, US

On December 6th 2025

What are IP address ranges?

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